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Title: Cooperative tin oxide fullerene electron selective layers for high-performance planar perovskite solar cells

Abstract

Both tin oxide (SnO2) and fullerenes have been reported as electron selective layers (ESLs) for producing efficient lead halide perovskite solar cells. Here, we report that SnO2 and fullerenes can work cooperatively to further boost the performance of perovskite solar cells. We find that fullerenes can be redissolved during perovskite deposition, allowing ultra-thin fullerenes to be retained at the interface and some dissolved fullerenes infiltrate into perovskite grain boundaries. The SnO2 layer blocks holes effectively; whereas, the fullerenes promote electron transfer and passivate both the SnO2/perovskite interface and perovskite grain boundaries. With careful device optimization, the best-performing planar perovskite solar cell using a fullerene passivated SnO2 ESL has achieved a steady-state efficiency of 17.75% and a power conversion efficiency of 19.12% with an open circuit voltage of 1.12 V, a short-circuit current density of 22.61 mA cm-2, and a fill factor of 75.8% when measured under reverse voltage scanning. In conclusion, we find that the partial dissolving of fullerenes during perovskite deposition is the key for fabricating high-performance perovskite solar cells based on metal oxide/fullerene ESLs.

Authors:
 [1];  [2];  [3];  [2];  [2];  [2];  [3];  [3];  [3];  [3];  [3];  [4];  [5];  [2]
  1. The Univ. of Toledo, Toledo, OH (United States); Wuhan Univ., Wuhan (China); National Renewable Energy Lab. (NREL), Golden, CO (United States)
  2. The Univ. of Toledo, Toledo, OH (United States)
  3. National Renewable Energy Lab. (NREL), Golden, CO (United States)
  4. Northwestern Univ., Evanston, IL (United States)
  5. Wuhan Univ., Wuhan (China)
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Solar Energy Technologies Office; USDOE SunShot Initiative, Next Generation Photovoltaics 3 Program
OSTI Identifier:
1328735
Report Number(s):
NREL/JA-5K00-67261
Journal ID: ISSN 2050-7488; JMCAET
Grant/Contract Number:  
AC36-08GO28308
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Journal of Materials Chemistry. A
Additional Journal Information:
Journal Volume: 4; Journal Issue: 37; Journal ID: ISSN 2050-7488
Publisher:
Royal Society of Chemistry
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 36 MATERIALS SCIENCE; perovskite solar cells; tin oxide; fullerenes

Citation Formats

Ke, Weijun, Zhao, Dewei, Xiao, Chuanxiao, Wang, Changlei, Cimaroli, Alexander J., Grice, Corey R., Yang, Mengjin, Li, Zhen, Jiang, Chun -Sheng, Al-Jassim, Mowafak, Zhu, Kai, Kanatzidis, Mercouri G., Fang, Guojia, and Yan, Yanfa. Cooperative tin oxide fullerene electron selective layers for high-performance planar perovskite solar cells. United States: N. p., 2016. Web. doi:10.1039/C6TA05095F.
Ke, Weijun, Zhao, Dewei, Xiao, Chuanxiao, Wang, Changlei, Cimaroli, Alexander J., Grice, Corey R., Yang, Mengjin, Li, Zhen, Jiang, Chun -Sheng, Al-Jassim, Mowafak, Zhu, Kai, Kanatzidis, Mercouri G., Fang, Guojia, & Yan, Yanfa. Cooperative tin oxide fullerene electron selective layers for high-performance planar perovskite solar cells. United States. https://doi.org/10.1039/C6TA05095F
Ke, Weijun, Zhao, Dewei, Xiao, Chuanxiao, Wang, Changlei, Cimaroli, Alexander J., Grice, Corey R., Yang, Mengjin, Li, Zhen, Jiang, Chun -Sheng, Al-Jassim, Mowafak, Zhu, Kai, Kanatzidis, Mercouri G., Fang, Guojia, and Yan, Yanfa. 2016. "Cooperative tin oxide fullerene electron selective layers for high-performance planar perovskite solar cells". United States. https://doi.org/10.1039/C6TA05095F. https://www.osti.gov/servlets/purl/1328735.
@article{osti_1328735,
title = {Cooperative tin oxide fullerene electron selective layers for high-performance planar perovskite solar cells},
author = {Ke, Weijun and Zhao, Dewei and Xiao, Chuanxiao and Wang, Changlei and Cimaroli, Alexander J. and Grice, Corey R. and Yang, Mengjin and Li, Zhen and Jiang, Chun -Sheng and Al-Jassim, Mowafak and Zhu, Kai and Kanatzidis, Mercouri G. and Fang, Guojia and Yan, Yanfa},
abstractNote = {Both tin oxide (SnO2) and fullerenes have been reported as electron selective layers (ESLs) for producing efficient lead halide perovskite solar cells. Here, we report that SnO2 and fullerenes can work cooperatively to further boost the performance of perovskite solar cells. We find that fullerenes can be redissolved during perovskite deposition, allowing ultra-thin fullerenes to be retained at the interface and some dissolved fullerenes infiltrate into perovskite grain boundaries. The SnO2 layer blocks holes effectively; whereas, the fullerenes promote electron transfer and passivate both the SnO2/perovskite interface and perovskite grain boundaries. With careful device optimization, the best-performing planar perovskite solar cell using a fullerene passivated SnO2 ESL has achieved a steady-state efficiency of 17.75% and a power conversion efficiency of 19.12% with an open circuit voltage of 1.12 V, a short-circuit current density of 22.61 mA cm-2, and a fill factor of 75.8% when measured under reverse voltage scanning. In conclusion, we find that the partial dissolving of fullerenes during perovskite deposition is the key for fabricating high-performance perovskite solar cells based on metal oxide/fullerene ESLs.},
doi = {10.1039/C6TA05095F},
url = {https://www.osti.gov/biblio/1328735}, journal = {Journal of Materials Chemistry. A},
issn = {2050-7488},
number = 37,
volume = 4,
place = {United States},
year = {Wed Aug 17 00:00:00 EDT 2016},
month = {Wed Aug 17 00:00:00 EDT 2016}
}

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