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Title: Carrier lifetimes of >1 μs in Sn-Pb perovskites enable efficient all-perovskite tandem solar cells

Abstract

All-perovskite–based polycrystalline thin-film tandem solar cells have the potential to deliver efficiencies of >30%. However, the performance of all-perovskite–based tandem devices has been limited by the lack of high-efficiency, low–band gap tin-lead (Sn-Pb) mixed-perovskite solar cells (PSCs). We found that the addition of guanidinium thiocyanate (GuaSCN) resulted in marked improvements in the structural and optoelectronic properties of Sn-Pb mixed, low–band gap (~1.25 electron volt) perovskite films. The films have defect densities that are lower by a factor of 10, leading to carrier lifetimes of greater than 1 microsecond and diffusion lengths of 2.5 micrometers. These improved properties enable our demonstration of >20% efficient low–band gap PSCs. When combined with wider–band gap PSCs, we achieve 25% efficient four-terminal and 23.1% efficient two-terminal all-perovskite–based polycrystalline thin-film tandem solar cells.

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Publication Date:
Research Org.:
Energy Frontier Research Centers (EFRC) (United States). Center for Hybrid Organic-Inorganic Semiconductors for Energy (CHOISE); 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); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1529434
Alternate Identifier(s):
OSTI ID: 1510422
Report Number(s):
NREL/JA-5900-72619
Journal ID: ISSN 0036-8075; /sci/364/6439/475.atom
Grant/Contract Number:  
AC36-08GO28308; FOA-0000990
Resource Type:
Published Article
Journal Name:
Science
Additional Journal Information:
Journal Name: Science Journal Volume: 364 Journal Issue: 6439; Journal ID: ISSN 0036-8075
Publisher:
American Association for the Advancement of Science (AAAS)
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 36 MATERIALS SCIENCE; perovskite films; carrier lifetimes; optoelectronics

Citation Formats

Tong, Jinhui, Song, Zhaoning, Kim, Dong Hoe, Chen, Xihan, Chen, Cong, Palmstrom, Axel F., Ndione, Paul F., Reese, Matthew O., Dunfield, Sean P., Reid, Obadiah G., Liu, Jun, Zhang, Fei, Harvey, Steven P., Li, Zhen, Christensen, Steven T., Teeter, Glenn, Zhao, Dewei, Al-Jassim, Mowafak M., van Hest, Maikel F. A. M., Beard, Matthew C., Shaheen, Sean E., Berry, Joseph J., Yan, Yanfa, and Zhu, Kai. Carrier lifetimes of >1 μs in Sn-Pb perovskites enable efficient all-perovskite tandem solar cells. United States: N. p., 2019. Web. doi:10.1126/science.aav7911.
Tong, Jinhui, Song, Zhaoning, Kim, Dong Hoe, Chen, Xihan, Chen, Cong, Palmstrom, Axel F., Ndione, Paul F., Reese, Matthew O., Dunfield, Sean P., Reid, Obadiah G., Liu, Jun, Zhang, Fei, Harvey, Steven P., Li, Zhen, Christensen, Steven T., Teeter, Glenn, Zhao, Dewei, Al-Jassim, Mowafak M., van Hest, Maikel F. A. M., Beard, Matthew C., Shaheen, Sean E., Berry, Joseph J., Yan, Yanfa, & Zhu, Kai. Carrier lifetimes of >1 μs in Sn-Pb perovskites enable efficient all-perovskite tandem solar cells. United States. doi:10.1126/science.aav7911.
Tong, Jinhui, Song, Zhaoning, Kim, Dong Hoe, Chen, Xihan, Chen, Cong, Palmstrom, Axel F., Ndione, Paul F., Reese, Matthew O., Dunfield, Sean P., Reid, Obadiah G., Liu, Jun, Zhang, Fei, Harvey, Steven P., Li, Zhen, Christensen, Steven T., Teeter, Glenn, Zhao, Dewei, Al-Jassim, Mowafak M., van Hest, Maikel F. A. M., Beard, Matthew C., Shaheen, Sean E., Berry, Joseph J., Yan, Yanfa, and Zhu, Kai. Thu . "Carrier lifetimes of >1 μs in Sn-Pb perovskites enable efficient all-perovskite tandem solar cells". United States. doi:10.1126/science.aav7911.
@article{osti_1529434,
title = {Carrier lifetimes of >1 μs in Sn-Pb perovskites enable efficient all-perovskite tandem solar cells},
author = {Tong, Jinhui and Song, Zhaoning and Kim, Dong Hoe and Chen, Xihan and Chen, Cong and Palmstrom, Axel F. and Ndione, Paul F. and Reese, Matthew O. and Dunfield, Sean P. and Reid, Obadiah G. and Liu, Jun and Zhang, Fei and Harvey, Steven P. and Li, Zhen and Christensen, Steven T. and Teeter, Glenn and Zhao, Dewei and Al-Jassim, Mowafak M. and van Hest, Maikel F. A. M. and Beard, Matthew C. and Shaheen, Sean E. and Berry, Joseph J. and Yan, Yanfa and Zhu, Kai},
abstractNote = {All-perovskite–based polycrystalline thin-film tandem solar cells have the potential to deliver efficiencies of >30%. However, the performance of all-perovskite–based tandem devices has been limited by the lack of high-efficiency, low–band gap tin-lead (Sn-Pb) mixed-perovskite solar cells (PSCs). We found that the addition of guanidinium thiocyanate (GuaSCN) resulted in marked improvements in the structural and optoelectronic properties of Sn-Pb mixed, low–band gap (~1.25 electron volt) perovskite films. The films have defect densities that are lower by a factor of 10, leading to carrier lifetimes of greater than 1 microsecond and diffusion lengths of 2.5 micrometers. These improved properties enable our demonstration of >20% efficient low–band gap PSCs. When combined with wider–band gap PSCs, we achieve 25% efficient four-terminal and 23.1% efficient two-terminal all-perovskite–based polycrystalline thin-film tandem solar cells.},
doi = {10.1126/science.aav7911},
journal = {Science},
number = 6439,
volume = 364,
place = {United States},
year = {2019},
month = {4}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1126/science.aav7911

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Cited by: 52 works
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