Strong-bonding hole-transport layers reduce ultraviolet degradation of perovskite solar cells

被引：44

作者：

Fei, Chengbin ^{[1
]}

Kuvayskaya, Anastasia ^{[2
]}

Shi, Xiaoqiang ^{[1
]}

Wang, Mengru ^{[1
]}

Shi, Zhifang ^{[1
]}

Jiao, Haoyang ^{[1
]}

Silverman, Timothy J. ^{[3
]}

Owen-Bellini, Michael ^{[3
]}

Dong, Yifan ^{[4
]}

Xian, Yeming ^{[5
]}

Scheidt, Rebecca ^{[4
]}

Wang, Xiaoming ^{[5
]}

Yang, Guang ^{[1
]}

Gu, Hangyu ^{[1
]}

Li, Nengxu ^{[1
]}

Dolan, Connor J. ^{[6
]}

Deng, Zhewen J. D. ^{[6
]}

Cakan, Deniz N. ^{[6
]}

Fenning, David P. ^{[6
]}

Yan, Yanfa ^{[5
]}

Beard, Matthew C. ^{[4
]}

Schelhas, Laura T. ^{[3
]}

Sellinger, Alan ^{[2
,4
]}

Huang, Jinsong ^{[1
,7
]}

机构：

[1] Univ North Carolina Chapel Hill, Dept Appl Phys Sci, Chapel Hill, NC 27599 USA

[2] Colorado Sch Mines, Dept Chem, Golden, CO 80401 USA

[3] Natl Renewable Energy Lab, Mat Chem & Computat Sci Directorate, Golden, CO 80401 USA

[4] Natl Renewable Energy Lab, Chem & Nanosci Ctr, Golden, CO 80401 USA

[5] Univ Toledo, Dept Phys & Astron, Toledo, OH 43606 USA

[6] Univ Calif San Diego, Dept NanoEngn, La Jolla, CA 92093 USA

[7] Univ North Carolina Chapel Hill, Dept Chem, Chapel Hill, NC 27599 USA

来源：

SCIENCE | 2024年 / 384卷 / 6700期

基金：

美国国家科学基金会;

关键词：

EFFICIENT; INTERFACE;

D O I：

10.1126/science.adi4531

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The light-emitting diodes (LEDs) used in indoor testing of perovskite solar cells do not expose them to the levels of ultraviolet (UV) radiation that they would receive in actual outdoor use. We report degradation mechanisms of p-i-n-structured perovskite solar cells under unfiltered sunlight and with LEDs. Weak chemical bonding between perovskites and polymer hole-transporting materials (HTMs) and transparent conducting oxides (TCOs) dominate the accelerated A-site cation migration, rather than direct degradation of HTMs. An aromatic phosphonic acid, [2-(9-ethyl-9H-carbazol-3-yl)ethyl]phosphonic acid (EtCz3EPA), enhanced bonding at the perovskite/HTM/TCO region with a phosphonic acid group bonded to TCOs and a nitrogen group interacting with lead in perovskites. A hybrid HTM of EtCz3EPA with strong hole-extraction polymers retained high efficiency and improved the UV stability of perovskite devices, and a champion perovskite minimodule-independently measured by the Perovskite PV Accelerator for Commercializing Technologies (PACT) center-retained operational efficiency of >16% after 29 weeks of outdoor testing.

引用

页码：1126 / 1134

页数：8

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