Sustainable Energy & Environmental Devices (SEED) Laboratory

Energy and environmental solutions through materials innovation



Journal Publications

    2023

  1. Joao Otavio Mendes, Gabriel Aygur, Jesús Ibarra Michel, James Bullock, Daniel Gómez, Enrico Della Gaspera, Joel van Embden "Transferable Highly (001) Oriented Sb2Se3 Nanorod Films on Flexible Substrates for Innovative Optoelectronic Devices", Advanced Materials Interfaces, 2023
  2. Yixiong Ji, Wangxian Chen, Di Yan, James Bullock, Yang Xu, Zhenghua Su, Wentong Yang, Jamie Stuart Laird, Tian Zheng, Na Wu, Wusong Zha, Qun Luo, Chang‐Qi Ma, Trevor A Smith, Fangyang Liu, Paul Mulvaney "An ITO‐Free Kesterite Solar Cell", Small, 2023
  3. Masafumi Horio, Toshihide Sumi, James Bullock, Yasuyuki Hirata, Masashige Miyamoto, Bailey R Nebgen, Tetsuya Wada, Tomoaki Senoo, Yuki Tsujikawa, Yuya Kubota, Shigeki Owada, Kensuke Tono, Makina Yabashi, Takushi Iimori, Yoshihiro Miyauchi, Michael W Zuerch, Iwao Matsuda, Craig P Schwartz, Walter S Drisdell "Detecting driving potentials at the buried SiO2 nanolayers in solar cells by chemical-selective nonlinear x-ray spectroscopy", Applied Physics Letters, 2023
  4. Jesus Ibarra Michel, Anh Huy Tuan Le, Di Yan, Willem‐Jan Berghuis, Lars Korte, Anyao Liu, Sieu Pheng Phang, Wenhao Chen, Daniel Macdonald, Bart Macco, Ziv Hameiri, James Bullock "Electron contact interlayers for low‐temperature‐processed crystalline silicon solar cells", Progress in Photovoltaics: Research and Applications, 2023
  5. Sivacarendran Balendhran, Mohammad Taha, Shifan Wang, Wei Yan, Naoki Higashitarumizu, Dingchen Wen, Nima Sefidmooye Azar, James Bullock, Paul Mulvaney, Ali Javey, Kenneth B Crozier "Flexible Vanadium Dioxide Photodetectors for Visible to Longwave Infrared Detection at Room Temperature", Advanced Functional Materials, 2023
  6. Shifan Wang, Arun Ashokan, Sivacarendran Balendhran, Wei Yan, Brett C Johnson, Alberto Peruzzo, Kenneth B Crozier, Paul Mulvaney, James Bullock "Room Temperature Bias-Selectable, Dual-Band Infrared Detectors Based on Lead Sulfide Colloidal Quantum Dots and Black Phosphorus", ACS nano, 2023
  7. Jesús Ibarra Michel, Di Yan, Sieu Pheng Phang, Tian Zheng, Brett C Johnson, Jie Yang, Xinyu Zhang, Wenhao Chen, Yimao Wan, Thien Truong, Josua Stuckelberger, Yida Pan, Daniel Macdonald, James Bullock "Poly-Si passivating contacts prepared via phosphorus spin-on-doping: A comparison between different silicon deposition methods", Solar Energy Materials and Solar Cells, 2023
  8. Ha Young Lee, Damian Nelson, Wei Yan, Kenneth B Crozier, James Bullock, Sejeong Kim "Gap‐Surface Plasmon‐Enhanced Photoluminescence of InSe", physica status solidi (b), 2023
  9. Wensheng Liang, Parvathala Narangari, Jingnan Tong, Jesus Ibarra Michel, Billy J Murdoch, Hang Cheong Sio, Teng Kho, Felipe Kremer, Stephane Armand, Keith McIntosh, James Bullock, Kean Chern Fong "Effect of Al Electrodes on Surface Passivation of TiOx Selective Heterocontacts for Si Solar Cells", physica status solidi, 2023
  10. Alexander Corletto, Marco Fronzi, Alexis Krywula Joannidis, Peter C Sherrell, Michael J Ford, David A Winkler, Joseph G Shapter, James Bullock, Amanda V Ellis "A Predictive Model for Monolayer‐Selective Metal‐Mediated MoS2 Exfoliation Incorporating Electrostatics", Advanced Materials Interfaces, 2023
  11. Aishani Mazumder, Chung Kim Nguyen, Thiha Aung, Mei Xian Low, Md Ataur Rahman, Salvy P Russo, Sherif Abdulkader Tawfik, Shifan Wang, James Bullock, Vaishnavi Krishnamurthi, Nitu Syed, Abhishek Ranjan, Ali Zavabeti, Irfan H Abidi, Xiangyang Guo, Yongxiang Li, Taimur Ahmed, Torben Daeneke, Akram Al‐Hourani, Sivacarendran Balendhran, Sumeet Walia "Long Duration Persistent Photocurrent in 3 nm Thin Doped Indium Oxide for Integrated Light Sensing and In‐Sensor Neuromorphic Computation", Advanced Functional Materials, 2023
  12. Mohammad Taha, Sivacarendran Balendhran, Peter C Sherrell, Nick Kirkwood, Dingchen Wen, Shifan Wang, Jiajun Meng, James Bullock, Kenneth B Crozier, Len Sciacca "Infrared modulation via near-room-temperature phase transitions of vanadium oxides & core–shell composites", Journal of Materials Chemistry A, 2023
  13. Leiping Duan, Daniel Walter, Nathan Chang, James Bullock, Di Kang, Sieu Pheng Phang, Klaus Weber, Thomas White, Daniel Macdonald, Kylie Catchpole, Heping Shen "Stability challenges for the commercialization of perovskite–silicon tandem solar cells", Nature Reviews Materials, 2023
  14. Shifan Wang, Robert James Chapman, Brett C Johnson, Inna Krasnokutska, Jean‐Luc J Tambasco, Kibret Messalea, Alberto Peruzzo, James Bullock "Integration of Black Phosphorus Photoconductors with Lithium Niobate on Insulator Photonics", Advanced Optical Materials, 11, 2, 2023

    15. 2022

  15. Wensheng Liang, Parvathala Narangari, Jingnan Tong, Jesus Ibarra Michel, Billy J Murdoch, Hang Cheong Sio, Teng Kho, Felipe Kremer, Stephane Armand, Keith McIntosh, James Bullock, Kean Chern Fong "Effect of Al Electrodes on Surface Passivation of TiOx Selective Heterocontacts for Si Solar Cells", Physica Status Solidi RRL, 17, 3, 2022
  16. Mike Tebyetekerwa, Thien N Truong, Wei Yan, Cheng Tang, Ary Anggara Wibowo, James Bullock, Aijun Du, Cheng Yan, Daniel Macdonald, Hieu T Nguyen "Twist Angle Effects on the Absorbance, Carrier Lifetime, and Diffusion Properties in Low Dimension Type‐II MoS2/WS2 Heterobilayers", Advanced Materials Interfaces, 9, 34, 2022
  17. Anh Huy Tuan Le, Julie Dréon, Jesús Ibarra Michel, Mathieu Boccard, James Bullock, Nino Borojevic, Ziv Hameiri "Temperature‐dependent performance of silicon heterojunction solar cells with transition‐metal‐oxide‐based selective contacts", Progress in Photovoltaics, 30, 8, 2022
  18. S.C. Scholten, G.J. Abrahams, B.C. Johnson, A.J. Healey, I.O. Robertson, D.A. Simpson, A. Stacey, S. Onoda, T. Ohshima, T.C. Kho, J. Ibarra Michel, J. Bullock, L.C.L. Hollenberg, and J.-P. Tetienne "Imaging Current Paths in Silicon Photovoltaic Devices with a Quantum Diamond Microscope", Physical Review Applied, 18, 1, 2022
  19. Kun Gao, Qunyu Bi, Xinyu Wang, Wenzhu Liu, Chunfang Xing, Kun Li, Dacheng Xu, Zhaojun Su, Cheng Zhang, Jian Yu, Dongdong Li, Baoquan Sun, James Bullock, Xiaohong Zhang, Xinbo Yang "Progress and Future Prospects of Wide-Bandgap Metal-Compound-Based Passivating Contacts for Silicon Solar Cells", Advanced Materials, 34, 26, 2022
  20. Jiajia Zha, Mingcheng Luo, Ming Ye, Tanveer Ahmed, Xuechao Yu, Der-Hsien Lien, Qiyuan He, Dangyuan Lei, Johnny C. Ho, James Bullock, Kenneth B. Crozier, Chaoliang Tan "Infrared Photodetectors Based on 2D Materials and Nanophotonics", Advanced Functional Materials, 32, 15, 2022
  21. Di Yan, Andres Cuevas, Josua Stuckelberger, Er-Chien Wang, Sieu Pheng Phang, Teng Choon Kho, Jesús Ibarra Michel, Daniel Macdonald, James Bullock "Silicon solar cells with passivating contacts: Classification and performance", Progress in Photovoltaics, 2022
  22. Jesus Ibarra Michel, Julie Dréon, Mathieu Boccard, James Bullock, Bart Macco "Carrier-selective contacts using metal compounds for crystalline silicon solar cells", Progress in Photovoltaics, 2022

    23. 2021

  23. Wei Yan, Brett C. Johnson, Sivacarendran Balendhran, Jasper Cadusch, Di Yan, Jesús Ibarra Michel, Shifan Wang, Tian Zheng, Kenneth Crozier, and James Bullock "Visible to Short-Wave Infrared Photodetectors Based on ZrGeTe4 van der Waals Materials", ACS Applied Materials & Interfaces, 13, 38, 2021
  24. Sivacarendran Balendhran, Zakir Hussain, Vivek R. Shrestha, Jasper Cadusch, Ming Ye, Nima Sefidmooye Azar, Hyungjin Kim, Rajesh Ramanathan, James Bullock, Ali Javey, Vipul Bansal, and Kenneth B. Crozier "Copper Tetracyanoquinodimethane (CuTCNQ): A Metal–Organic Semiconductor for Room-Temperature Visible to Long-Wave Infrared Photodetection", ACS Applied Materials & Interfaces, 13, 32, 2021
  25. Di Yan, Andres Cuevas, Jesús Ibarra Michel, Chun Zhang, Yimao Wan, Xinyu Zhang, James Bullock "Polysilicon passivated junctions: The next technology for silicon solar cells?", Joule, 5, 4, 2021
  26. Nima Sefidmooye Azar, James Bullock, Sivacarendran Balendhran, Hyungjin Kim, Ali Javey, and Kenneth B. Crozier "Light–Matter Interaction Enhancement in Anisotropic 2D Black Phosphorus via Polarization-Tailoring Nano-Optics", ACS Photonics, 8, 4, 2021
  27. Nima Sefidmooye Azar, James Bullock, Vivek Raj Shrestha, Sivacarendran Balendhran, Wei Yan, Hyungjin Kim, Ali Javey, and Kenneth B. Crozier "Long-Wave Infrared Photodetectors Based on 2D Platinum Diselenide atop Optical Cavity Substrates", ACS Nano, 15, 4, 2021

    28. 2020

  28. Wei Yan, Vivek Raj Shresha, Quentin Jeangros, Nima Sefidmooye Azar, Sivacarendran Balendhran, Christophe Ballif, Kenneth Crozier, James Bullock "Spectrally Selective Mid-Wave Infrared Detection Using Fabry-Pérot Cavity Enhanced Black Phosphorus 2D Photodiodes", ACS Nano, 14, 10, 2020
  29. Vivek Raj Shrestha, Benjamin Craig, Jiajun Meng, James Bullock, Ali Javey, Kenneth B Crozier "Mid- to long-wave infrared computational spectroscopy with a graphene metasurface modulator" , Scientific Reports, 10, 5377, 2020
  30. Wenjie Wang, Jian He, Di Yan, Chris Samundsett, Sieu Pheng Phang, Zengguang Huang, Wenzhong Shen, James Bullock, Yimao Wan "21.3%-efficient n-type silicon solar cell with a full area rear TiOx/LiF/Al electron-selective contact" , Solar Energy Materials and Solar Cells, 206, 110291, 2020

    31. 2019

  31. Thomas G Allen, James Bullock, Xinbo Yang, Ali Javey, Stefaan De Wolf "Passivating contacts for crystalline silicon solar cells" , Nature Energy, 4, 914–928, 2019
  32. Lingfei Wei, Xiaojie Xu, Gurudayal, James Bullock, Joel W Ager "Machine Learning Optimization of p-Type Transparent Conducting Films" , Chemistry of Materials, 31, 18, 7340-7350, 2019
  33. George Zhang, Matin Amani, Apoorva Chaturvedi, Chaoliang Tan, James Bullock, Xiaohui Song, Hyungjin Kim, Der-Hsien Lien, Mary C Scott, Hua Zhang, Ali Javey "Optical and electrical properties of two-dimensional palladium diselenide" , Applied Physics Letters, 114, 25, 253102 2019
  34. Jian He, Md Anower Hossain, Hao Lin, Wenjie Wang, Siva Krishna Karuturi, Bram Hoex, Jichun Ye, Pingqi Gao, James Bullock, Yimao Wan "In Situ Transmission Electron Microscopy Study of Molybdenum Oxide Contacts for Silicon Solar Cells" , ACS Nano, 13, 6, 6356–6362 2019
  35. Haider Ali, Supriya Koul, Geoffrey Gregory, James Bullock, Ali Javey, Akihiro Kushima, Kristopher O Davis "In Situ Transmission Electron Microscopy Study of Molybdenum Oxide Contacts for Silicon Solar Cells" , physica status solidi (a) 216 (7), 1800998, 2019
  36. Wenbo Ji, Yingbo Zhao, Hossain M. Fahad, James Bullock, Thomas Allen, Der-Hsien Lien, Stefaan De Wolf and Ali Javey, "Dip Coating Passivation of Crystalline Silicon by Lewis Acids" , ACS Nano, 13, 3, 3723–3729, 2019
  37. Gurudayal Gurudayal, Jeffrey W Beeman, James Bullock, Hao Wang, Johanna Eichhorn, Clarissa M Towle, Ali Javey, Francesca Maria Toma, Nripan Mathews, Joel W Ager, "Si Photocathode with Ag-Supported Dendritic Cu Catalyst for CO2 Reduction" , Energy & Environmental Science, 2019,12, 1068-1077
  38. James Bullock, Yimao Wan, Mark Hettick, Xu Zhaoran, Sieu Pheng Phang, Di Yan, Hanchen Wang, Wenbo Ji, Chris Samundsett, Ziv Hameiri, Daniel Macdonald, Andres Cuevas, and Ali Javey "Dopant-Free Partial Rear Contacts Enabling 23% SiliconSolar Cells" , Advanced Energy Materials, 2019, 1803367
  39. Haider Ali, Supriya Koul, Geoffrey Gregory, James Bullock, Ali Javey, Akihiro Kushima, and Kristopher O. Davis, "In Situ Transmission Electron Microscopy Study of Molybdenum Oxide Contacts for Silicon Solar Cells" , Phys. Status Solidi A2019, 1800998

    40. Pre-2019

  40. James Bullock, Matin Amani, Joy Cho, Yu-Ze Chen, Geun Ho Ahn, Valerio Adinolfi, Vivek Shrestha, Yang Gao, Kenneth B Crozier, Yu-Lun Chueh, and Ali Javey, "Polarization-Resolved Black-Phosphorous/Molybdenum Disulfide Mid-Wave Infrared Photodiodes with High Detectivity at Room Temperature" , Nature Photonics, 12 (2018), 601-607
  41. Matin Amani, Chaoliang Tan, George Zhang, Chunsong Zhao, James Bullock, Xiaohui Song, Hyungjin Kim, Vivek Raj Shrestha, Yang Gao, Kenneth B. Crozier, Mary Scott, A. Javey, "Solution-Synthesized High-Mobility Tellurium Nanoflakes for Short-Wave Infrared Photodetectors" , ACS Nano, 2018, in press
  42. Hnin Y. Y. Nyein, Li-Chai Tai, Quynh P. Ngo, Minghan Chao, George Zhang, Wei Gao, Mallika Bariya, James Bullock, Hyungjin Kim, Hossain M. Fahad, Ali Javey, "A Wearable Microfluidic Sensing Patch for Dynamic Sweat Secretion Analysis", ACS Sensors, 3, 944-952, 2018.
  43. Yimao Wan, James Bullock, Mark Hettick, Zhaoran Xu, Chris Samundsett, Di Yan, Jun Peng, Ali Javey, Andres Cuevas, "Temperature and Humidity Stable Alkali/Alkaline‐Earth Metal Carbonates as Electron Heterocontacts for Silicon Photovoltaics", Advanced Energy Materials, 1800743, 2018
  44. Yimao Wan, James Bullock, Mark Hettick, Zhaoran Xu, Di Yan, Jun Peng, Ali Javey, Andres Cuevas, "Zirconium oxide surface passivation of crystalline silicon" , Applied Physics Letters, 112 (2018), 201604.
  45. James Bullock, Yimao Wan, Xu Zhaoran, Stephanie Essig, Mark Hettick, Hanchen Wang, Wenbo Ji, Mathieu Boccard, Andres Cuevas, Christophe Ballif, Ali Javey, “Stable Dopant-free Asymmetric Heterocontact Silicon Solar Cells with Efficiencies Above 20%” , ACS Energy Letters, 2018,
  46. Xiaojie Xu, Sudhanshu Shukla, Ya Liu, Binbin Yue, James Bullock, Longxing Su, Yanmei Li, Ali Javey, Xiaosheng Fang and Joel W. Ager “Solution-processed Transparent Self-powered p CuS ZnS/n-ZnO UV Photodiode” , Physica Status Solidi: RRL, 1700381, 2017
  47. Yimao Wan, Siva Krishna Karuturi, Chris Samundsett, James Bullock, Mark Hettick, Di Yan, Jun Peng, Parvathala Reddy Narangari, Sudha Mokkapati, Hark Hoe Tan, Chennupati Jagadish, Ali Javey, and Andres Cuevas, “Tantalum oxide electron-selective heterocontacts for silicon photovoltaics and photoelectrochemical water reduction” , ACS Energy Letters, 3, 125-131, 2017
  48. Matin Amani, Emma Regan, James Bullock, Geun Ho Ahn, Ali Javey, “Mid-Wave Infrared Photoconductors Based on Black Phosphorous-Arsenic Alloys” , ACS Nano, 11, 11724–11731, 2017
  49. Gurudayal, James Bullock, David F. Srankó, Clarissa M. Towle, Yanwei Lum, Mark Hettick, Mary Scott, Ali Javey, Joel Ager, "Efficient solar-driven electrochemical CO2 reduction to hydrocarbons and oxygenates" , Energy & Environmental Science, 10, 2222-2230, 2017
  50. Nicholas Grant, Tim Niewelt, Neil Wilson, Evangeline Wheeler-Jones, James Bullock, Mohammad Al-Amin, Martin Schubert, Andre van Veen, Ali Javey, John Murphy, "Superacid-Treated Silicon Surfaces: Extending the Limit of Carrier Lifetime for Photovoltaic Applications" , IEEE Journal of Photovoltaics, 7, 1574-1583, 2017
  51. James Bullock, Hiroki Ota, Hanchen Wang, Zhoaran Xu, Mark Hettick, Di Yan, Christian Samundsett, Yimao Wan, Stephanie Essig, Monica Morales-Masis, Andres Cuevas, Ali Javey, "Microchannel contacting of crystalline silicon solar cells" , Scientific Reports, 7, 9085, 2017
  52. Thomas G. Allen, James Bullock, Quinten Jeangros, Chris Samundsett, Yimao Wan, Jason Cui, Aicha Hessler‐Wyser, Stefaan De Wolf, Ali Javey, Andres Cuevas, "A Low Resistance Calcium/Reduced Titania Passivated Contact for High Efficiency Crystalline Silicon Solar Cells" , Advanced Energy Materials, 1602606, 2017
  53. Yimao Wan, Chris Samundsett, James Bullock, Mark Hettick, Thomas Allen, Di Yan, Jun Peng, Yilang Wu, Jason Cui, Ali Javey, Andres Cuevas, "Conductive and Stable Magnesium Oxide Electron‐Selective Contacts for Efficient Silicon Solar Cells" , Advanced Energy Materials, 7, 1601863, 2017
  54. James Bullock, Mark Hettick, Jonas Geissbühler, Alison J. Ong, Thomas Allen, Carolin M. Sutter-Fella, Teresa Chen, Hiroki Ota, Ethan W. Schaler, Stefaan De Wolf, Christophe Ballif, Andrés Cuevas and Ali Javey, “Efficient silicon solar cells with dopant-free asymmetric heterocontacts” , Nature Energy, 15031, 2016
  55. James Bullock, D. Kiriya, N. E Grant, A. Azcatl, M. Hettick, T. Kho, P. Phang, H. C. Sio, D. Yan, D. MacDonald, M. A. Quevedo-Lopez, R. M. Wallace, A. Cuevas, A. Javey, "Superacid passivation of crystalline silicon surfaces" , ACS Applied Materials & Interfaces, 8, 24205–24211, 2016
  56. James Bullock, Peiting Zheng, Quentin Jeangros, Mahmut Tosun, Mark Hettick, Carolin M. Sutter-Fella, Yimao Wan, Thomas Allen, Di Yan, Daniel Macdonald, Stefaan De Wolf, Aïcha Hessler-Wyser, Andres Cuevas, Ali Javey, “Lithium Fluoride Based Electron Contacts for High Efficiency n-type Crystalline Silicon Solar Cells” , Advanced Energy Materials, 1600241, 2016
  57. Xiaojie Xu, James Bullock, Laura Schelhas, Elisa Stutz, Jose Fonseca Vega, Mark Hettick, Vanessa Pool, Michael Toney, Xiaosheng Fang, Joel W. Ager, “Chemical Bath Deposition of p-Type Transparent, Highly Conducting (CuS)x:(ZnS)1–x Nanocomposite Thin Films and Fabrication of Si Heterojunction Solar Cells” , Nano letters, 16 (3), 1925-1932, 2016
  58. Thomas G. Allen, James Bullock, P. Zheng, B. Vaughan, M. Barr, Y. Wan, C. Samundsett, A. Javey, A. Cuevas, "Calcium contacts to n-type crystalline silicon solar cells" , Progress in Photovoltaics: Research and Applications, 2016
  59. Yimao Wan, Chris Samundsett, James Bullock, Mark Hettick, Di Yan, Thomas Allen, Peiting Zheng, Xinyu Zhang, Jie Cui, Josephine McKeon, Ali Javey, and Andres Cuevas, “Magnesium fluoride as a dopant–free electron–selective contact for highly efficient crystalline silicon solar cells” , ACS Applied Materials & Interfaces, 8 (23), 2016
  60. Xinyu Zhang, Yimao Wan, James Bullock, Thomas Allen and Andres Cuevas, “Low resistance hole contacts on crystalline silicon via nitrogen-doped copper oxide films” , Applied Physics Letters, 109, 052102 (2016)
  61. Wei Gao, Hnin Y. Y. Nyein, Ziba Shahpar, Hossian M. Fahad, Kevin Chen, Sam Emaminejad, Yuji Gao, Li-C. Tai, Hiroki Ota, Eric Wu, James Bullock, Yuping Zeng, Der-H. Lien, Ali Javey, "Wearable Microsensor Array for Multiplexed Heavy Metal Monitoring of Body Fluids" , ACS Sensors, 1, 866–874, 2016
  62. Di Yan, Andres Cuevas, Yimao Wan and James Bullock, “Passivating contacts for silicon solar cells based on boron-diffused recrystallized amorphous silicon and thin dielectric interlayers” , Solar Energy Materials and Solar Cells, Volume 152, 2016
  63. James Bullock, Andres Cuevas, Christian Samundsett, Di Yan, Josephine McKeon and Yimao Wan, “Simple silicon solar cells featuring an a-Si:H enhanced rear MIS contact” , Solar Energy Materials and Solar Cells, Volume 138, 2015
  64. James Bullock, Christian Samundsett, Andrés Cuevas, Di Yan, Yimao Wan and Thomas Allen, “Proof-of-concept p-type silicon solar cells with molybdenum oxide partial rear contacts” , IEEE Journal of Photovoltaics, Volume 5, no. 6, 2015
  65. James Bullock, Di Yan, Andres Cuevas, Yimao Wan and Christian Samundsett, “n- and p-type silicon solar cells with molybdenum oxide hole contacts” , Energy Procedia, Volume 77, 2015
  66. Xinbo Yang, James Bullock, Lujia Xu, Qunyu Bi, Sachin Surve, Marco Ernst, Klaus Weber, “Passivated contacts to laser doped p+ and n+ regions” , Solar Energy Materials and Solar Cells, Volume 140, 2015
  67. Xinbo Yang, James Bullock, Qunyu Bi, Klaus Weber, “High efficiency n-type silicon solar cells featuring passivated contact to laser doped regions” , Applied Physics Letters, 106, 113901, 2015
  68. Yimao Wan, James Bullock, Andres Cuevas, “Tantalum oxide/silicon nitride: A negatively charged surface passivation stack for silicon solar cells” , Applied Physics Letters, 106, 201601, 2015
  69. Yimao Wan, James Bullock, Andres Cuevas, “Passivation of c-Si surfaces by ALD tantalum oxide capped with PECVD silicon nitride” , Solar Energy Materials and Solar Cells, Volume 142, 2015
  70. Di Yan, Andres Cuevas, James Bullock, Yimao Wan, Christian Samundsett, “Phosphorus-diffused polysilicon contacts for solar cells” , Solar Energy Materials and Solar Cells, Volume 142, 2015
  71. Kean Chern Fong, Teng Choon Kho, Andreas Fell, Evan Franklin, Ngwe Zin, Andrew W. Blakers, Keith R. McIntosh, Thomas Ratcliff, Matthew Stocks, James Bullock, and Er-Chien Wang, “Contact Resistivity of Evaporated Al Contacts for Silicon Solar Cells” , IEEE Journal of Photovoltaics, Volume 7, No. 5, 2015
  72. Yimao Wan, Di Yan, James Bullock, Xinyu Zhang, and Andres Cuevas, “Passivation of c-Si surfaces by sub-nm amorphous silicon capped with silicon nitride” , Applied Physics Letters, 107, 231606, 2015
  73. Di Yan, Andres Cuevas, Yimao Wan and James Bullock, “Silicon nitride/silicon oxide interlayers for solar cell passivating contacts based on PECVD amorphous silicon” , Physica Status Solidi: RRL, Volume 9, Issue 11, 2015
  74. James Bullock, Andres Cuevas, Thomas G. Allen, Corsin Battaglia, Molybdenum Oxide MoOx: A Versatile Hole Contact for Silicon Solar Cells” Applied Physics Letters" , 105, 232109, 2014
  75. James Bullock, Di Yan, Yimao Wan, Andres Cuevas, Benedicte Demaurex, Aïcha Hessler-Wyser and Stefaan De Wolf, “Amorphous silicon passivated contacts for diffused junction silicon solar cells” , Journal of Applied Physics, 115, 163703, 2014
  76. Teck Kong Chong, James Bullock, Thomas P White, Martin Berry, Klaus J Weber, “Nanoporous Silicon produced by Metal-Assisted Etching: A Detailed Investigation of Optical and Contact Properties for Solar Cells” , IEEE Journal of Photovoltaics, Volume: 5 Issue: 2, 2014
  77. James Bullock, Di Yan, Andres Cuevas, Benedicte Demaurex, Aïcha Hessler-Wyser and Stefaan De Wolf, “Amorphous Silicon Enhanced Metal-Insulator-Semiconductor Contacts for Silicon Solar Cells” , Journal of Applied Physics, 116, 163706, 2014
  78. Wensheng Liang, Dongchul Suh, Jun Yu, James Bullock, Klaus J Weber, “Degradation of the surface passivation of plasma‐assisted ALD Al2O3 under damp‐heat exposure” , Physica Status Solidi (a) 212 (2), 274-281, 2014
  79. Nicholas Grant, Fiacre Rougieux, Daniel Macdonald, James Bullock and Yimao Wan, “Grown-in defects limiting the bulk lifetime of p-type float-zone silicon wafers” , Journal of Applied Physics, 117(5):055711, 2014
  80. Andrew Thomson, Matthew Gardener, Keith McIntosh, Avi Shalav and James Bullock, “Damp and dry heat degradation of thermal oxide passivation of p+ silicon” , Journal of Applied Physics, 115, 114505, 2014
  81. James Bullock, Di Yan, and Andrés Cuevas, “Passivation of aluminium–n+silicon contacts for solar cells by ultrathin Al2O3 and SiO2 dielectric layers” , Physica Status Solidi: RRL, Volume 7, Issue 11, 2013
  82. James Bullock, Boris Veith, Andrew Thomson, Ari Karkkainen, Jan Schmidt and Andrés Cuevas, “Enhanced rear-side reflection and firing-stable surface passivation of silicon solar cells with capping polymer films” , Physica Status Solidi: RRL, Volume 7, Issue 8, 2013
  83. Avi Shalav, James Bullock, Peter Anderson, Simon Ruffell, John White and Robert G. Elliman, “The Mechanical Photochemical Properties of Titania Coated Silica” , ECS J. Solid State Sci. Technol, Volume 1, Issue 5, 2013


Conference Publications

    2023

  1. Di Yan, Jesus Ibarra Michel, Yida Pan, Sieu Pheng Phang, Daniel Macdonald, Heping Shen, Leiping Duan, Kylie Catchpole, Jie Yang, Peiting Zheng, Xinyu Zhang, Hao Jin, James Bullock "Improving the Stability of Polycrystalline Silicon Passivated Contacts Using Titanium Dioxide", 2023 IEEE 50th Photovoltaic Specialists Conference (PVSC), 2023

    2. 2021

  2. Sivacarendran Balendhran, Aviraj Ingle, Wei Yan, Nima Sefidmooye Azar, Hyungjin Kim, Rajesh Ramanathan, James Bullock, Ali Javey, Vipul Bansal, Kenneth Crozier “Longwave Infrared Photoresponse in Copper 7,7,8,8-tetracyano-2,3,5,6-tetraflouroquinodimethane (CuTCNQF4)” , 2021 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC), 2021
  3. Wensheng Liang, Parvathala Narangari, Jingnan Tong, James Bullock, Jesus Ibarra Michel, Hang Cheong Sio, Teng Kho, Stephane Armand, Keith McIntosh, Kean Chern Fong “Aluminium electrode induced surface passivation deterioration for dopant free passivated contacts” , 2021 IEEE 48th Photovoltaic Specialists Conference (PVSC), 2021
  4. Nima Sefidmooye Azar, James Bullock, Sivacarendran Balendhran, Hyungjin Kim, Ali Javey, Kenneth B Crozier “Polarization-converting plasmonic nanoantennas for light absorption enhancement in anisotropic 2D black phosphorus” , CLEO: QELS_Fundamental Science, 2021

    5. 2020

  5. Sivacarendran Balendhran, Zakir Hussain, Vivek R Shrestha, Jasper Cadusch, Ming Ye, Hyungjin Kim, Rajesh Ramanathan, James Bullock, Ali Javey, Vipul Bansal, Kenneth B Crozier "Visible to Long-Wave Infrared Photodetectors based on Copper Tetracyanoquinodimethane (CuTCNQ) Crystals", Lasers and Electro-Optics/Pacific Rim, C11B_4, 2020
  6. Nima Sefidmooye Azar, Vivek Raj Shrestha, James Bullock, Matin Amani, Hyungjin Kim, Ali Javey, Kenneth B Crozier "Long-Wave Infrared Photodetectors Based on Platinum Diselenide", Lasers and Electro-Optics Pacific Rim (CLEO-PR), 1-2, 2020

    7. 2019

  7. Haider Ali, Supriya Koul, Geoffrey Gregory, James Bullock, Ali Javey, Akihiro Kushima, Kristopher O Davis “In Situ Transmission Electron Microscopy: A Powerful Tool for the Characterization of Carrier-Selective Contacts” , IEEE 46th Photovoltaic Specialists Conference (PVSC), 3074-3076, 2019
  8. Vivek Raj Shrestha, Benjamin Craig, Matin Amani, James Bullock, Ali Javey, Kenneth B Crozier “Mid-Infrared Computational Spectroscopy with an Electrically-Tunable Graphene Metasurface” , CLEO: Science and Innovations, SW3J. 2, 2019

    9. Pre-2019

  9. Vivek Raj Shrestha, Yang Gao, Matin Amani, James Bullock, Ali Javey, Kenneth B Crozier, “Electrical tuning of reflectance of graphene metasurface for unpolarized long wavelength infrared light” , Integrated Photonics Research, Silicon and Nanophotonics, 2018
  10. James Bullock, Yimao Wan, Xu Zhaoran, Di Yan, Pheng Phang, Mark Hettick, Chris Samundsett, Ziv Hameiri, Andres Cuevas and Ali Javey, “23% efficient n-type crystalline silicon solar cells with passivated partial rear contacts”, 45th IEEE Photovoltaic Specialists Conference (PVSC), 2018
  11. James Bullock, Zhaoran Xu, Mark Hettick, Yimao Wan, Ali Javey, “Metal Nanoparticle Hole Contacts for Silicon Solar Cells” , 44th IEEE Photovoltaic Specialists Conference (PVSC), 2017
  12. James Bullock, Yimao Wan, Mark Hettick, Jonas Geissbühler, Alison J Ong, Daisuke Kiriya, Di Yan, Thomas Allen, Jun Peng, Xinyu Zhang, Carolin M Sutter-Fella, Stefaan De Wolf, Christophe Ballif, Andrés Cuevas, Ali Javey, “Survey of dopant-free carrier-selective contacts for silicon solar cells” , 43rd IEEE Photovoltaic Specialists Conference (PVSC), 0210-0214, 2016
  13. Xinyu Zhang, Andres Cuevas, James Bullock, “Characterisation of sputtering deposited amorphous silicon films for silicon heterojunction solar cells” , 43rd IEEE Photovoltaic Specialists Conference (PVSC), 0073-0076, 2016
  14. Yimao Wan, Chris Samundsett, James Bullock, Di Yan, Thomas Allen, Peiting Zheng, Xinyu Zhang, Jie Cui, Josephine McKeon, Andres Cuevas, “Magnesium fluoride based electron-selective contact” , 43rd IEEE Photovoltaic Specialists Conference (PVSC), 2540 – 2542, 2016
  15. Thomas G. Allen, Peiting Zheng, Ben Vaughan, Matthew Barr, Yimao Wan, Christian Samundsett, James Bullock, and Andres Cuevas, “Low resistance TiO2-passivated calcium contacts for crystalline silicon solar cells” , 43rd IEEE Photovoltaic Specialists Conference (PVSC), 2016
  16. Quentin Jeangros, Jonas Geissbühler, James Bullock, Ali Javey, Stefaan De Wolf, Aicha Hessler-Wyser, Christophe Ballif, “Advanced TEM characterization of new electrical contacts for high efficiency c-Si solar cells” , Microscopy and Microanalysis, 22(S3):1624-1625, 2016
  17. James Bullock; Christian Samundsett; Andrés Cuevas; Di Yan; Yimao Wan; Thomas Allen, “Proof-of-concept p-type silicon solar cells with molybdenum oxide partial rear contacts” , 42nd IEEE Photovoltaic Specialist Conference (PVSC), 1-4, 2015
  18. Andres Cuevas, Thomas Allen, James Bullock, Yimao Wan, Xinyu Zhang, “Skin care for healthy silicon solar cells” , 42nd IEEE Photovoltaic Specialist Conference (PVSC), 1-6, 2015
  19. Di Yan, James Bullock, Yimao Wan and Andrés Cuevas, “Development of a Self-Aligned Etch-Back Process for Selectively Doped Silicon Solar cells” , 40th IEEE Photovoltaic Specialist Conference (PVSC), 2014 0562-0566
  20. Thomas Allen, James Bullock, Andres Cuevas, Simeon Baker-Finch, Fouad Karouta, “Reactive ion etched black silicon texturing: A comparative study” , 40th IEEE Photovoltaic Specialist Conference (PVSC), 2014 0562-0566
  21. James Bullock, Di Yan, Andres Cuevas, Benedicte Demaurex, Aïcha Hessler-Wyser and Stefaan De Wolf, “Passivated Contacts to n+ and p+ Silicon Based on Amorphous Silicon and Thin Dielectrics” , 40th IEEE Photovoltaic Specialist Conference (PVSC), 2014 0562-0566
  22. Wensheng Liang, Klaus Weber, Dongchul Suh, Jun Yu and James Bullock, “Humidity Degradation and Repair of ALD Al2O3 Passivated Silicon” , 39th IEEE Photovoltaic Specialist Conference (PVSC), 2013
  23. Nicholas E. Grant, Keith R. McIntosh, Jason Tan, Fiacre Rougieux, James Bullock, Yimao Wan, Chog Barugkin, “Light Enhanced Hydrofluoric Acid Passivation for Evaluating Silicon Bulk Lifetimes” , 28th European Photovoltaic Solar Energy Conference and Exhibition, 883 – 887, 2013
  24. Andrew Thomson, James Bullock, Teng Kho, Paul Williams, Ari Karkkainen, Leon Kwek, Andres Cuevas, “Enhanced Back-Surface Reflectance and Passivation Capping from the Application of Inexpensive Sray/Spin on Polymer Coatings on Thin ALD Al2O3 Layers” , 27th European Photovoltaic Solar Energy Conference and Exhibition, 1784 - 1787, 2012
  25. James Bullock, Di Yan, Andrew Thomson, Andres Cuevas, “Imaging the Recombination Current Pre-Factor Jo of Heavily Doped Surface Regions; A Comparison of Low and High Injection Photoluminescence Techniques” , 27th European Photovoltaic Solar Energy Conference and Exhibition, 1312 – 1318, 2012