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

Fei, Chengbin; Li, Nengxu; Wang, Mengru; Wang, Xiaoming; Gu, Hangyu; Chen, Bo; Zhang, Zhao; Ni, Zhenyi; Jiao, Haoyang; Xu, Wenzhan; Shi, Zhifang; Yan, Yanfa; Huang, Jinsong

doi:10.1126/science.ade9463

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

Journal Article · Thu May 25 00:00:00 EDT 2023 · Science

DOI:https://doi.org/10.1126/science.ade9463· OSTI ID:2337955

^[1]; Li, Nengxu ^[2]; ^[2]; ^[3]; ^[2]; Chen, Bo ^[4]; Zhang, Zhao ^[4]; ^[2]; ^[2]; ^[2]; ^[2]; ^[3]; ^[2]

University of North Carolina at Chapel Hill, NC (United States); UNC Chapel Hill
University of North Carolina at Chapel Hill, NC (United States)
University of Toledo, OH (United States)
Perotech, Inc., Chapel Hill, NC (United States)

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. Here, 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.

View Accepted Manuscript (DOE)

Research Organization:: University of North Carolina at Chapel Hill, NC (United States)

Sponsoring Organization:: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Solar Energy Technologies Office; USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF)

Grant/Contract Number:: AC02-05CH11231; EE0009520

OSTI ID:: 2337955

Journal Information:: Science, Journal Name: Science Journal Issue: 6647 Vol. 380; ISSN 0036-8075

Publisher:: AAASCopyright Statement

Country of Publication:: United States

Language:: English

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