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Title: Simultaneous band-gap narrowing and carrier-lifetime prolongation of organic–inorganic trihalide perovskites

Abstract

The organic-inorganic hybrid lead trihalide perovskites have been emerging as the most attractive photovoltaic materials. As regulated by Shockley-Queisser theory, a formidable materials science challenge for improvement to the next level requires further band-gap narrowing for broader absorption in solar spectrum, while retaining or even synergistically prolonging the carrier lifetime, a critical factor responsible for attaining the near-band-gap photovoltage. Herein, by applying controllable hydrostatic pressure, we have achieved unprecedented simultaneous enhancement in both band-gap narrowing and carrier-lifetime prolongation (up to 70% to -100% increase) under mild pressures at -0.3 GPa. The pressure-induced modulation on pure hybrid perovskites without introducing any adverse chemical or thermal effect clearly demonstrates the importance of band edges on the photon-electron interaction and maps a pioneering route toward a further increase in their photovoltaic performance.

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Solar Energy Technologies Office (EE-4S)
OSTI Identifier:
1296606
Report Number(s):
NREL/JA-5900-66664
Journal ID: ISSN 0027-8424
DOE Contract Number:
AC36-08GO28308
Resource Type:
Journal Article
Resource Relation:
Journal Name: Proceedings of the National Academy of Sciences of the United States of America; Journal Volume: 113; Journal Issue: 32
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 36 MATERIALS SCIENCE; perovskite; solar cell; high pressure; band gap; carrier lifetime

Citation Formats

Kong, Lingping, Liu, Gang, Gong, Jue, Hu, Qingyang, Schaller, Richard D., Dera, Przemyslaw, Zhang, Dongzhou, Liu, Zhenxian, Yang, Wenge, Zhu, Kai, Tang, Yuzhao, Wang, Chuanyi, Wei, Su-Huai, Xu, Tao, and Mao, Ho-kwang. Simultaneous band-gap narrowing and carrier-lifetime prolongation of organic–inorganic trihalide perovskites. United States: N. p., 2016. Web. doi:10.1073/pnas.1609030113.
Kong, Lingping, Liu, Gang, Gong, Jue, Hu, Qingyang, Schaller, Richard D., Dera, Przemyslaw, Zhang, Dongzhou, Liu, Zhenxian, Yang, Wenge, Zhu, Kai, Tang, Yuzhao, Wang, Chuanyi, Wei, Su-Huai, Xu, Tao, & Mao, Ho-kwang. Simultaneous band-gap narrowing and carrier-lifetime prolongation of organic–inorganic trihalide perovskites. United States. doi:10.1073/pnas.1609030113.
Kong, Lingping, Liu, Gang, Gong, Jue, Hu, Qingyang, Schaller, Richard D., Dera, Przemyslaw, Zhang, Dongzhou, Liu, Zhenxian, Yang, Wenge, Zhu, Kai, Tang, Yuzhao, Wang, Chuanyi, Wei, Su-Huai, Xu, Tao, and Mao, Ho-kwang. Thu . "Simultaneous band-gap narrowing and carrier-lifetime prolongation of organic–inorganic trihalide perovskites". United States. doi:10.1073/pnas.1609030113.
@article{osti_1296606,
title = {Simultaneous band-gap narrowing and carrier-lifetime prolongation of organic–inorganic trihalide perovskites},
author = {Kong, Lingping and Liu, Gang and Gong, Jue and Hu, Qingyang and Schaller, Richard D. and Dera, Przemyslaw and Zhang, Dongzhou and Liu, Zhenxian and Yang, Wenge and Zhu, Kai and Tang, Yuzhao and Wang, Chuanyi and Wei, Su-Huai and Xu, Tao and Mao, Ho-kwang},
abstractNote = {The organic-inorganic hybrid lead trihalide perovskites have been emerging as the most attractive photovoltaic materials. As regulated by Shockley-Queisser theory, a formidable materials science challenge for improvement to the next level requires further band-gap narrowing for broader absorption in solar spectrum, while retaining or even synergistically prolonging the carrier lifetime, a critical factor responsible for attaining the near-band-gap photovoltage. Herein, by applying controllable hydrostatic pressure, we have achieved unprecedented simultaneous enhancement in both band-gap narrowing and carrier-lifetime prolongation (up to 70% to -100% increase) under mild pressures at -0.3 GPa. The pressure-induced modulation on pure hybrid perovskites without introducing any adverse chemical or thermal effect clearly demonstrates the importance of band edges on the photon-electron interaction and maps a pioneering route toward a further increase in their photovoltaic performance.},
doi = {10.1073/pnas.1609030113},
journal = {Proceedings of the National Academy of Sciences of the United States of America},
number = 32,
volume = 113,
place = {United States},
year = {Thu Jul 21 00:00:00 EDT 2016},
month = {Thu Jul 21 00:00:00 EDT 2016}
}