High-performance methylammonium-free ideal-band-gap perovskite solar cells

Jinhui Tong; Jue Gong; Mingyu Hu; Srinivas K. Yadavalli; Zhenghong Dai; Fei Zhang; Chuanxiao Xiao; Ji Hao; Mengjin Yang; Michael A. Anderson; Erin L. Ratcliff; Joseph J. Berry; Nitin P. Padture; Yuanyuan Zhou; Kai Zhu

doi:10.1016/j.matt.2021.01.003

High-performance methylammonium-free ideal-band-gap perovskite solar cells

Jinhui Tong, Jue Gong, Mingyu Hu, Srinivas K. Yadavalli, Zhenghong Dai, Fei Zhang, Chuanxiao Xiao, Ji Hao, Mengjin Yang, Michael A. Anderson, Erin L. Ratcliff, Joseph J. Berry, Nitin P. Padture, Yuanyuan Zhou, Kai Zhu

Research output: Contribution to journal › Article › peer-review

59 Scopus citations

Abstract

The development of mixed tin-lead (Sn-Pb)-based perovskite solar cells (PSCs) with low band gap (1.2–1.4 eV) has become critical not only for pushing single-junction devices toward the maximum efficiency given by the Shockley-Queisser limit, but also for enabling all-perovskite tandem devices beyond this limit. However, achieving high power-conversion efficiency (PCE) and long-term device operation stability simultaneously remains a significant challenge for Sn-Pb-based PSCs. Here, we demonstrate near ideal-band-gap (∼1.34 eV) methylammonium-free Sn-Pb-based PSCs with high efficiency (∼20%) and promising operational stability of maintaining >80% of initial PCE over 750 h under maximum-power-point tracking. The key to this success is the use of a SnCl₂⋅3FACl complex additive that improves the microstructure and reduces the development of residual stress in the Sn-Pb perovskite thin films, which in turn enhances the efficiency and stability of the Sn-Pb-based ideal-band-gap PSCs.

Original language	English (US)
Pages (from-to)	1365-1376
Number of pages	12
Journal	Matter
Volume	4
Issue number	4
DOIs	https://doi.org/10.1016/j.matt.2021.01.003
State	Published - Apr 7 2021

Keywords

MAP5: improvement
Sn-Pb perovskite
additives
ideal band gap
perovskite solar cells
stability
strain

ASJC Scopus subject areas

General Materials Science

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10.1016/j.matt.2021.01.003

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title = "High-performance methylammonium-free ideal-band-gap perovskite solar cells",

abstract = "The development of mixed tin-lead (Sn-Pb)-based perovskite solar cells (PSCs) with low band gap (1.2–1.4 eV) has become critical not only for pushing single-junction devices toward the maximum efficiency given by the Shockley-Queisser limit, but also for enabling all-perovskite tandem devices beyond this limit. However, achieving high power-conversion efficiency (PCE) and long-term device operation stability simultaneously remains a significant challenge for Sn-Pb-based PSCs. Here, we demonstrate near ideal-band-gap (∼1.34 eV) methylammonium-free Sn-Pb-based PSCs with high efficiency (∼20%) and promising operational stability of maintaining >80% of initial PCE over 750 h under maximum-power-point tracking. The key to this success is the use of a SnCl2⋅3FACl complex additive that improves the microstructure and reduces the development of residual stress in the Sn-Pb perovskite thin films, which in turn enhances the efficiency and stability of the Sn-Pb-based ideal-band-gap PSCs.",

keywords = "MAP5: improvement, Sn-Pb perovskite, additives, ideal band gap, perovskite solar cells, stability, strain",

author = "Jinhui Tong and Jue Gong and Mingyu Hu and Yadavalli, {Srinivas K.} and Zhenghong Dai and Fei Zhang and Chuanxiao Xiao and Ji Hao and Mengjin Yang and Anderson, {Michael A.} and Ratcliff, {Erin L.} and Berry, {Joseph J.} and Padture, {Nitin P.} and Yuanyuan Zhou and Kai Zhu",

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year = "2021",

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doi = "10.1016/j.matt.2021.01.003",

language = "English (US)",

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TY - JOUR

T1 - High-performance methylammonium-free ideal-band-gap perovskite solar cells

AU - Tong, Jinhui

AU - Gong, Jue

AU - Hu, Mingyu

AU - Yadavalli, Srinivas K.

AU - Dai, Zhenghong

AU - Zhang, Fei

AU - Xiao, Chuanxiao

AU - Hao, Ji

AU - Yang, Mengjin

AU - Anderson, Michael A.

AU - Ratcliff, Erin L.

AU - Berry, Joseph J.

AU - Padture, Nitin P.

AU - Zhou, Yuanyuan

AU - Zhu, Kai

PY - 2021/4/7

Y1 - 2021/4/7

N2 - The development of mixed tin-lead (Sn-Pb)-based perovskite solar cells (PSCs) with low band gap (1.2–1.4 eV) has become critical not only for pushing single-junction devices toward the maximum efficiency given by the Shockley-Queisser limit, but also for enabling all-perovskite tandem devices beyond this limit. However, achieving high power-conversion efficiency (PCE) and long-term device operation stability simultaneously remains a significant challenge for Sn-Pb-based PSCs. Here, we demonstrate near ideal-band-gap (∼1.34 eV) methylammonium-free Sn-Pb-based PSCs with high efficiency (∼20%) and promising operational stability of maintaining >80% of initial PCE over 750 h under maximum-power-point tracking. The key to this success is the use of a SnCl2⋅3FACl complex additive that improves the microstructure and reduces the development of residual stress in the Sn-Pb perovskite thin films, which in turn enhances the efficiency and stability of the Sn-Pb-based ideal-band-gap PSCs.

AB - The development of mixed tin-lead (Sn-Pb)-based perovskite solar cells (PSCs) with low band gap (1.2–1.4 eV) has become critical not only for pushing single-junction devices toward the maximum efficiency given by the Shockley-Queisser limit, but also for enabling all-perovskite tandem devices beyond this limit. However, achieving high power-conversion efficiency (PCE) and long-term device operation stability simultaneously remains a significant challenge for Sn-Pb-based PSCs. Here, we demonstrate near ideal-band-gap (∼1.34 eV) methylammonium-free Sn-Pb-based PSCs with high efficiency (∼20%) and promising operational stability of maintaining >80% of initial PCE over 750 h under maximum-power-point tracking. The key to this success is the use of a SnCl2⋅3FACl complex additive that improves the microstructure and reduces the development of residual stress in the Sn-Pb perovskite thin films, which in turn enhances the efficiency and stability of the Sn-Pb-based ideal-band-gap PSCs.

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KW - additives

KW - ideal band gap

KW - perovskite solar cells

KW - stability

KW - strain

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High-performance methylammonium-free ideal-band-gap perovskite solar cells

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Keywords

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