Lead-chelating hole-transport layers for efficient and stable perovskite minimodules

被引：188

作者：

Fei, Chengbin ^{[1
]}

Li, Nengxu ^{[1
]}

Wang, Mengru ^{[1
]}

Wang, Xiaoming ^{[2
]}

Gu, Hangyu ^{[1
]}

Chen, Bo ^{[3
]}

Zhang, Zhao ^{[3
]}

Ni, Zhenyi ^{[1
]}

Jiao, Haoyang ^{[1
]}

Xu, Wenzhan ^{[1
]}

Shi, Zhifang ^{[1
]}

Yan, Yanfa ^{[2
]}

Huang, Jinsong ^{[1
,4
]}

机构：

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

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

[3] Perotech Inc, Chapel Hill, NC 27516 USA

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

来源：

SCIENCE | 2023年 / 380卷 / 6647期

关键词：

SOLAR-CELLS; BATHOCUPROINE; BLOCKING; INTERFACES; CONTACTS; FILMS;

D O I：

10.1126/science.ade9463

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 defective bottom interfaces of perovskites and hole-transport layers (HTLs) limit the performance of p-i-n structure perovskite solar cells. We report that the addition of lead chelation molecules into HTLs can strongly interact with lead(II) ion (Pb2+), resulting in a reduced amorphous region in perovskites near HTLs and a passivated perovskite bottom surface. The minimodule with an aperture area of 26.9 square centimeters has a power conversion efficiency (PCE) of 21.8% (stabilized at 21.1%) that is certified by the National Renewable Energy Laboratory (NREL), which corresponds to a minimal small-cell efficiency of 24.6% (stabilized 24.1%) throughout the module area. Small-area cells and large-area minimodules with lead chelation molecules in HTLs had a light soaking stability of 3010 and 2130 hours, respectively, at an efficiency loss of 10% from the initial value under 1-sun illumination and open-circuit voltage conditions.

引用

页码：823 / 829

页数：7

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