Stability-limiting heterointerfaces of perovskite photovoltaics
Abstract
Optoelectronic devices consist of heterointerfaces formed between dissimilar semiconducting materials. The relative energy level alignment between contacting semiconductors determinately affects the heterointerface charge injection and extraction dynamics. For perovskite solar cells (PSCs), the heterointerface between the top perovskite surface and a charge-transporting material (CTM) is often treated for defect passivation to improve PSC stability and performance. However, such surface treatments could also affect the heterointerface energetics. Here we show that surface treatments may induce a negative work function shift (i.e. more n-type), which activates halide migration to aggravate PSC instability. Therefore, despite the beneficial effects of surface passivation, this detrimental side effect limits the maximum stability improvement attainable for PSCs treated in these ways. Furthermore, this trade-off between the beneficial and detrimental effects should guide further work on improving PSC stability via surface treatments.
- Authors:
-
[1];
[3];
[4];
[1];
[4];
[5];
[4];
more »
- Univ. of California, Los Angeles, CA (United States)
- Marmara Univ., Istanbul (Turkey)
- Univ. of California, Los Angeles, CA (United States); Westlake Inst. for Advanced Study, Hangzhou (China)
- Sungkyunkwan Univ., Suwon (Korea, Republic of)
- Univ. of California, Irvine, CA (United States)
- Univ. of California, Los Angeles, CA (United States); National Yang Ming Chiao Tung Univ., Hsinchu (Taiwan)
- Publication Date:
- Research Org.:
- Univ. of California, Los Angeles, CA (United States)
- Sponsoring Org.:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Solar Energy Technologies Office
- OSTI Identifier:
- 1864592
- Grant/Contract Number:
- EE0008751
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Nature (London)
- Additional Journal Information:
- Journal Name: Nature (London); Journal Volume: 605; Journal Issue: 7909; Journal ID: ISSN 0028-0836
- Publisher:
- Nature Publishing Group
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 14 SOLAR ENERGY; Electronic devices; Solar cells; Surface chemistry
Citation Formats
Tan, Shaun, Huang, Tianyi, Yavuz, Ilhan, Wang, Rui, Yoon, Tae Woong, Xu, Mingjie, Xing, Qiyu, Park, Keonwoo, Lee, Do-Kyoung, Chen, Chung-Hao, Zheng, Ran, Yoon, Taegeun, Zhao, Yepin, Wang, Hao-Cheng, Meng, Dong, Xue, Jingjing, Song, Young Jae, Pan, Xiaoqing, Park, Nam-Gyu, Lee, Jin-Wook, and Yang, Yang. Stability-limiting heterointerfaces of perovskite photovoltaics. United States: N. p., 2022.
Web. doi:10.1038/s41586-022-04604-5.
Tan, Shaun, Huang, Tianyi, Yavuz, Ilhan, Wang, Rui, Yoon, Tae Woong, Xu, Mingjie, Xing, Qiyu, Park, Keonwoo, Lee, Do-Kyoung, Chen, Chung-Hao, Zheng, Ran, Yoon, Taegeun, Zhao, Yepin, Wang, Hao-Cheng, Meng, Dong, Xue, Jingjing, Song, Young Jae, Pan, Xiaoqing, Park, Nam-Gyu, Lee, Jin-Wook, & Yang, Yang. Stability-limiting heterointerfaces of perovskite photovoltaics. United States. https://doi.org/10.1038/s41586-022-04604-5
Tan, Shaun, Huang, Tianyi, Yavuz, Ilhan, Wang, Rui, Yoon, Tae Woong, Xu, Mingjie, Xing, Qiyu, Park, Keonwoo, Lee, Do-Kyoung, Chen, Chung-Hao, Zheng, Ran, Yoon, Taegeun, Zhao, Yepin, Wang, Hao-Cheng, Meng, Dong, Xue, Jingjing, Song, Young Jae, Pan, Xiaoqing, Park, Nam-Gyu, Lee, Jin-Wook, and Yang, Yang. Tue .
"Stability-limiting heterointerfaces of perovskite photovoltaics". United States. https://doi.org/10.1038/s41586-022-04604-5. https://www.osti.gov/servlets/purl/1864592.
@article{osti_1864592,
title = {Stability-limiting heterointerfaces of perovskite photovoltaics},
author = {Tan, Shaun and Huang, Tianyi and Yavuz, Ilhan and Wang, Rui and Yoon, Tae Woong and Xu, Mingjie and Xing, Qiyu and Park, Keonwoo and Lee, Do-Kyoung and Chen, Chung-Hao and Zheng, Ran and Yoon, Taegeun and Zhao, Yepin and Wang, Hao-Cheng and Meng, Dong and Xue, Jingjing and Song, Young Jae and Pan, Xiaoqing and Park, Nam-Gyu and Lee, Jin-Wook and Yang, Yang},
abstractNote = {Optoelectronic devices consist of heterointerfaces formed between dissimilar semiconducting materials. The relative energy level alignment between contacting semiconductors determinately affects the heterointerface charge injection and extraction dynamics. For perovskite solar cells (PSCs), the heterointerface between the top perovskite surface and a charge-transporting material (CTM) is often treated for defect passivation to improve PSC stability and performance. However, such surface treatments could also affect the heterointerface energetics. Here we show that surface treatments may induce a negative work function shift (i.e. more n-type), which activates halide migration to aggravate PSC instability. Therefore, despite the beneficial effects of surface passivation, this detrimental side effect limits the maximum stability improvement attainable for PSCs treated in these ways. Furthermore, this trade-off between the beneficial and detrimental effects should guide further work on improving PSC stability via surface treatments.},
doi = {10.1038/s41586-022-04604-5},
journal = {Nature (London)},
number = 7909,
volume = 605,
place = {United States},
year = {Tue Mar 15 00:00:00 EDT 2022},
month = {Tue Mar 15 00:00:00 EDT 2022}
}
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