Stability-limiting heterointerfaces of perovskite photovoltaics

Shaun Tan, Tianyi Huang, Ilhan Yavuz, Rui Wang (), Tae Woong Yoon, Mingjie Xu, Qiyu Xing, Keonwoo Park, Do-Kyoung Lee, Chung-Hao Chen, Ran Zheng, Taegeun Yoon, Yepin Zhao, Hao-Cheng Wang, Dong Meng, Jingjing Xue, Young Jae Song, Xiaoqing Pan, Nam-Gyu Park, Jin-Wook Lee () and Yang Yang ()
Additional contact information
Shaun Tan: University of California Los Angeles
Tianyi Huang: University of California Los Angeles
Ilhan Yavuz: Marmara University
Rui Wang: University of California Los Angeles
Tae Woong Yoon: Sungkyunkwan University
Mingjie Xu: University of California Irvine
Qiyu Xing: University of California Los Angeles
Keonwoo Park: Sungkyunkwan University
Do-Kyoung Lee: Sungkyunkwan University
Chung-Hao Chen: University of California Los Angeles
Ran Zheng: University of California Los Angeles
Taegeun Yoon: Sungkyunkwan University
Yepin Zhao: University of California Los Angeles
Hao-Cheng Wang: University of California Los Angeles
Dong Meng: University of California Los Angeles
Jingjing Xue: University of California Los Angeles
Young Jae Song: Sungkyunkwan University
Xiaoqing Pan: University of California Irvine
Nam-Gyu Park: Sungkyunkwan University
Jin-Wook Lee: Sungkyunkwan University
Yang Yang: University of California Los Angeles

Nature, 2022, vol. 605, issue 7909, 268-273

Abstract: 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 is often treated for defect passivation1–4 to improve the PSC stability and performance. However, such surface treatments can also affect the heterointerface energetics1. Here we show that surface treatments may induce a negative work function shift (that is, 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 this way. This trade-off between the beneficial and detrimental effects should guide further work on improving PSC stability via surface treatments.

Date: 2022
References: Add references at CitEc
Citations: View citations in EconPapers (14)

Downloads: (external link)
https://www.nature.com/articles/s41586-022-04604-5 Abstract (text/html)
Access to the full text of the articles in this series is restricted.

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:nature:v:605:y:2022:i:7909:d:10.1038_s41586-022-04604-5

Ordering information: This journal article can be ordered from
https://www.nature.com/

DOI: 10.1038/s41586-022-04604-5

Access Statistics for this article

Nature is currently edited by Magdalena Skipper

More articles in Nature from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().