
Stefaan De Wolf
Articles
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Oct 11, 2024 |
onlinelibrary.wiley.com | Sofiia Kosar |Stefaan De Wolf
Conflict of Interest The authors declare no conflict of interest. References 1 Best Research-Cell Efficiency Chart https://www.nrel.gov/pv/cell-efficiency.html, (accessed: May 2024). 2, , ACS Photonics 2018, 5, 2970. 3, , , Adv. Energy Mater. 2019, 9, 1901489. 4, , , , Adv. Energy Mater. 2017, 7, 1700912. 5, , , , , , , , Adv. Funct. Mater. 2018, 28, 1706995. 6, , , Nat. Rev. Mater. 2019, 4, 573. 7, Matter 2021, 4, 3852. 8, , , , , , , , Adv. Mater. 2022, 34, 2200383. 9, , , Adv.
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Oct 8, 2024 |
nature.com | Christopher E. Petoukhoff |Changzeng Ding |Mirko Prato |Nada Mrkyvkova |Peter Siffalovic |Stefaan De Wolf | +3 more
AbstractInterface engineering is the core of device optimization, and this is particularly true for perovskite photovoltaics (PVs). The steady improvement in their performance has been largely driven by careful manipulation of interface chemistry to reduce unwanted recombination. Despite that, PVs devices still suffer from unavoidable open circuit voltage (VOC) losses. Here, we propose a different approach by creating a photo-ferroelectric perovskite interface.
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Aug 14, 2024 |
nature.com | Chongwen Li |Fangyuan Jiang |Zhaoning Song |Xiaoming Wang |Adam Balvanz |Esma Ugur | +18 more
AbstractPerovskite tandem solar cells show promising performance, but non-radiative recombination and its progressive worsening with time, especially in the mixed Sn–Pb low-bandgap layer, limit performance and stability. Here we find that mixed Sn–Pb perovskite thin films exhibit a compositional gradient, with an excess of Sn on the surface—and we show this gradient exacerbates oxidation and increases the recombination rate.
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Mar 28, 2023 |
nature.com | Zaiwei Wang |Hao Chen |Dominik J. Kubicki |Esma Ugur |Guang Yang |Deying Luo | +10 more
Author notes These authors contributed equally: Zaiwei Wang, Lewei Zeng, Tong Zhu, Hao Chen Authors and Affiliations Department of Electrical and Computer Engineering, University of Toronto, 35 St George Street, Toronto, Ontario, Canada Zaiwei Wang, Lewei Zeng, Tong Zhu, Hao Chen, Bin Chen, Chongwen Li, Aidan Maxwell, Junke Wang, Sam Teale, Suhas Mahesh, Sasa Wang, Shuangyan Hu, Euidae Jung, Mingyang Wei, So Min Park, Luke Grater & Edward Sargent Department of Chemistry, Northwestern...
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