Combined Precursor Engineering and Grain Anchoring Leading to MA‐Free, Phase‐Pure, and Stable α‐Formamidinium Lead Iodide Perovskites for Efficient Solar Cells
Abstract
Abstract α‐Formamidinium lead iodide (α‐FAPbI 3 ) is one of the most promising candidate materials for high‐efficiency and thermally stable perovskite solar cells (PSCs) owing to its outstanding optoelectrical properties and high thermal stability. However, achieving a stable form of α‐FAPbI 3 where both the composition and the phase are pure is very challenging. Herein, we report on a combined strategy of precursor engineering and grain anchoring to successfully prepare methylammonium (MA)‐free and phase‐pure stable α‐FAPbI 3 films. The incorporation of volatile FA‐based additives in the precursor solutions completely suppresses the formation of non‐perovskite δ‐FAPbI 3 during film crystallization. Grains of the desired α‐phase are anchored together and stabilized when 4‐ tert ‐butylbenzylammonium iodide is permeated into the α‐FAPbI 3 film interior via grain boundaries. This cooperative scheme leads to a significantly increased efficiency close to 21 % for FAPbI 3 perovskite solar cells. Moreover, the stabilized PSCs exhibit improved thermal stability and maintained ≈90 % of their initial efficiency after storage at 50 °C for over 1600 hours.
- Authors:
-
[1];
[2];
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- Institute of Functional Nano &, Soft Materials (FUNSOM) Jiangsu Key Laboratory of Carbon-Based Functional Materials and Devices Soochow University Suzhou Jiangsu 215123 China, Laboratory of Photonics and Interfaces Institute of Chemical Sciences and Engineering École Polytechnique Fédérale de Lausanne (EPFL) Station 6 1015 Lausanne Switzerland
- Laboratory of Photonics and Interfaces Institute of Chemical Sciences and Engineering École Polytechnique Fédérale de Lausanne (EPFL) Station 6 1015 Lausanne Switzerland
- Department of Chemistry and Centre for Processable Electronics Imperial College London SW7 2AZ UK
- Institute of Functional Nano &, Soft Materials (FUNSOM) Jiangsu Key Laboratory of Carbon-Based Functional Materials and Devices Soochow University Suzhou Jiangsu 215123 China
- Laboratory of Photomolecular Science Institute of Chemical Sciences and Engineering École Polytechnique Fédérale de Lausanne (EPFL) Station 6 1015 Lausanne Switzerland
- Chemistry &, Nanoscience Center National Renewable Energy Laboratory Golden CO 80401 USA
- Department of Chemistry and Centre for Processable Electronics Imperial College London SW7 2AZ UK, SPECIFIC IKC College of Engineering Swansea University, Bay Campus Fabian Way Swansea SA1 8EN UK
- Publication Date:
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1831287
- Resource Type:
- Publisher's Accepted Manuscript
- Journal Name:
- Angewandte Chemie
- Additional Journal Information:
- Journal Name: Angewandte Chemie Journal Volume: 133 Journal Issue: 52; Journal ID: ISSN 0044-8249
- Publisher:
- Wiley Blackwell (John Wiley & Sons)
- Country of Publication:
- Germany
- Language:
- English
Citation Formats
Ling, Xufeng, Zhu, Hongwei, Xu, Weidong, Liu, Cheng, Pan, Linfeng, Ren, Dan, Yuan, Jianyu, Larson, Bryon W., Grätzel, Carole, Kirmani, Ahmad R., Ouellette, Olivier, Krishna, Anurag, Sun, Jianguo, Zhang, Chunyang, Li, Youyong, Zakeeruddin, Shaik M., Gao, Jing, Liu, Yuhang, Durrant, James R., Luther, Joseph M., Ma, Wanli, and Grätzel, Michael. Combined Precursor Engineering and Grain Anchoring Leading to MA‐Free, Phase‐Pure, and Stable α‐Formamidinium Lead Iodide Perovskites for Efficient Solar Cells. Germany: N. p., 2021.
Web. doi:10.1002/ange.202112555.
Ling, Xufeng, Zhu, Hongwei, Xu, Weidong, Liu, Cheng, Pan, Linfeng, Ren, Dan, Yuan, Jianyu, Larson, Bryon W., Grätzel, Carole, Kirmani, Ahmad R., Ouellette, Olivier, Krishna, Anurag, Sun, Jianguo, Zhang, Chunyang, Li, Youyong, Zakeeruddin, Shaik M., Gao, Jing, Liu, Yuhang, Durrant, James R., Luther, Joseph M., Ma, Wanli, & Grätzel, Michael. Combined Precursor Engineering and Grain Anchoring Leading to MA‐Free, Phase‐Pure, and Stable α‐Formamidinium Lead Iodide Perovskites for Efficient Solar Cells. Germany. https://doi.org/10.1002/ange.202112555
Ling, Xufeng, Zhu, Hongwei, Xu, Weidong, Liu, Cheng, Pan, Linfeng, Ren, Dan, Yuan, Jianyu, Larson, Bryon W., Grätzel, Carole, Kirmani, Ahmad R., Ouellette, Olivier, Krishna, Anurag, Sun, Jianguo, Zhang, Chunyang, Li, Youyong, Zakeeruddin, Shaik M., Gao, Jing, Liu, Yuhang, Durrant, James R., Luther, Joseph M., Ma, Wanli, and Grätzel, Michael. Thu .
"Combined Precursor Engineering and Grain Anchoring Leading to MA‐Free, Phase‐Pure, and Stable α‐Formamidinium Lead Iodide Perovskites for Efficient Solar Cells". Germany. https://doi.org/10.1002/ange.202112555.
@article{osti_1831287,
title = {Combined Precursor Engineering and Grain Anchoring Leading to MA‐Free, Phase‐Pure, and Stable α‐Formamidinium Lead Iodide Perovskites for Efficient Solar Cells},
author = {Ling, Xufeng and Zhu, Hongwei and Xu, Weidong and Liu, Cheng and Pan, Linfeng and Ren, Dan and Yuan, Jianyu and Larson, Bryon W. and Grätzel, Carole and Kirmani, Ahmad R. and Ouellette, Olivier and Krishna, Anurag and Sun, Jianguo and Zhang, Chunyang and Li, Youyong and Zakeeruddin, Shaik M. and Gao, Jing and Liu, Yuhang and Durrant, James R. and Luther, Joseph M. and Ma, Wanli and Grätzel, Michael},
abstractNote = {Abstract α‐Formamidinium lead iodide (α‐FAPbI 3 ) is one of the most promising candidate materials for high‐efficiency and thermally stable perovskite solar cells (PSCs) owing to its outstanding optoelectrical properties and high thermal stability. However, achieving a stable form of α‐FAPbI 3 where both the composition and the phase are pure is very challenging. Herein, we report on a combined strategy of precursor engineering and grain anchoring to successfully prepare methylammonium (MA)‐free and phase‐pure stable α‐FAPbI 3 films. The incorporation of volatile FA‐based additives in the precursor solutions completely suppresses the formation of non‐perovskite δ‐FAPbI 3 during film crystallization. Grains of the desired α‐phase are anchored together and stabilized when 4‐ tert ‐butylbenzylammonium iodide is permeated into the α‐FAPbI 3 film interior via grain boundaries. This cooperative scheme leads to a significantly increased efficiency close to 21 % for FAPbI 3 perovskite solar cells. Moreover, the stabilized PSCs exhibit improved thermal stability and maintained ≈90 % of their initial efficiency after storage at 50 °C for over 1600 hours.},
doi = {10.1002/ange.202112555},
journal = {Angewandte Chemie},
number = 52,
volume = 133,
place = {Germany},
year = {Thu Nov 18 00:00:00 EST 2021},
month = {Thu Nov 18 00:00:00 EST 2021}
}
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