Vapor-assisted deposition of highly efficient, stable black-phase FAPbI3 perovskite solar cells

Lu, Haizhou; Liu, Yuhang; Ahlawat, Paramvir; Mishra, Aditya; Tress, Wolfgang; Eickemeyer, Felix T; Yang, Yingguo; Fu, Fan; Wang, Zaiwei; Avalos, Claudia E; Carlsen, Brian I; Agarwalla, Anand; Zhang, Xin; Li, Xiaoguo; Zhan, Yiqiang; Zakeeruddin, Shaik M; Emsley, Lyndon; Rothlisberger, Ursula; Zheng, Lirong; Hagfeldt, Anders; Grätzel, Michael

doi:10.1126/science.abb8985

Please use this identifier to cite or link to this item: https://doi.org/10.21256/zhaw-20649

Publication type:	Article in scientific journal
Type of review:	Peer review (publication)
Title:	Vapor-assisted deposition of highly efficient, stable black-phase FAPbI3 perovskite solar cells
Authors:	Lu, Haizhou Liu, Yuhang Ahlawat, Paramvir Mishra, Aditya Tress, Wolfgang Eickemeyer, Felix T Yang, Yingguo Fu, Fan Wang, Zaiwei Avalos, Claudia E Carlsen, Brian I Agarwalla, Anand Zhang, Xin Li, Xiaoguo Zhan, Yiqiang Zakeeruddin, Shaik M Emsley, Lyndon Rothlisberger, Ursula Zheng, Lirong Hagfeldt, Anders Grätzel, Michael
et. al:	No
DOI:	10.1126/science.abb8985 10.21256/zhaw-20649
Published in:	Science
Volume(Issue):	370
Issue:	6512
Page(s):	eabb8985
Issue Date:	2020
Publisher / Ed. Institution:	American Association for the Advancement of Science
ISSN:	0036-8075 1095-9203
Language:	English
Subject (DDC):	621.3: Electrical, communications, control engineering
Abstract:	Mixtures of cations or halides with FAPbI3 (where FA is formamidinium) lead to high efficiency in perovskite solar cells (PSCs) but also to blue-shifted absorption and long-term stability issues caused by loss of volatile methylammonium (MA) and phase segregation. We report a deposition method using MA thiocyanate (MASCN) or FASCN vapor treatment to convert yellow δ-FAPbI3 perovskite films to the desired pure α-phase. NMR quantifies MA incorporation into the framework. Molecular dynamics simulations show that SCN- anions promote the formation and stabilization of α-FAPbI3 below the thermodynamic phase-transition temperature. We used these low-defect-density α-FAPbI3 films to make PSCs with >23% power-conversion efficiency and long-term operational and thermal stability, as well as a low (330 millivolts) open-circuit voltage loss and a low (0.75 volt) turn-on voltage of electroluminescence.
URI:	https://digitalcollection.zhaw.ch/handle/11475/20649
Fulltext version:	Accepted version
License (according to publishing contract):	Licence according to publishing contract
Restricted until:	2021-04-02
Departement:	School of Engineering
Organisational Unit:	Institute of Computational Physics (ICP)
Appears in collections:	Publikationen School of Engineering

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Lu, H., Liu, Y., Ahlawat, P., Mishra, A., Tress, W., Eickemeyer, F. T., Yang, Y., Fu, F., Wang, Z., Avalos, C. E., Carlsen, B. I., Agarwalla, A., Zhang, X., Li, X., Zhan, Y., Zakeeruddin, S. M., Emsley, L., Rothlisberger, U., Zheng, L., et al. (2020). Vapor-assisted deposition of highly efficient, stable black-phase FAPbI3 perovskite solar cells. Science, 370(6512), eabb8985. https://doi.org/10.1126/science.abb8985

Lu, H. et al. (2020) ‘Vapor-assisted deposition of highly efficient, stable black-phase FAPbI3 perovskite solar cells’, Science, 370(6512), p. eabb8985. Available at: https://doi.org/10.1126/science.abb8985.

H. Lu et al., “Vapor-assisted deposition of highly efficient, stable black-phase FAPbI3 perovskite solar cells,” Science, vol. 370, no. 6512, p. eabb8985, 2020, doi: 10.1126/science.abb8985.

LU, Haizhou, Yuhang LIU, Paramvir AHLAWAT, Aditya MISHRA, Wolfgang TRESS, Felix T EICKEMEYER, Yingguo YANG, Fan FU, Zaiwei WANG, Claudia E AVALOS, Brian I CARLSEN, Anand AGARWALLA, Xin ZHANG, Xiaoguo LI, Yiqiang ZHAN, Shaik M ZAKEERUDDIN, Lyndon EMSLEY, Ursula ROTHLISBERGER, Lirong ZHENG, Anders HAGFELDT und Michael GRÄTZEL, 2020. Vapor-assisted deposition of highly efficient, stable black-phase FAPbI3 perovskite solar cells. Science. 2020. Bd. 370, Nr. 6512, S. eabb8985. DOI 10.1126/science.abb8985

Lu, Haizhou, Yuhang Liu, Paramvir Ahlawat, Aditya Mishra, Wolfgang Tress, Felix T Eickemeyer, Yingguo Yang, et al. 2020. “Vapor-Assisted Deposition of Highly Efficient, Stable Black-Phase FAPbI3 Perovskite Solar Cells.” Science 370 (6512): eabb8985. https://doi.org/10.1126/science.abb8985.

Lu, Haizhou, et al. “Vapor-Assisted Deposition of Highly Efficient, Stable Black-Phase FAPbI3 Perovskite Solar Cells.” Science, vol. 370, no. 6512, 2020, p. eabb8985, https://doi.org/10.1126/science.abb8985.