Simultaneous Cesium and Acetate Coalloying Improves Efficiency and Stability of FA0.85MA0.15PbI3 Perovskite Solar Cell with an Efficiency of 21.95%

Shihao Yuan; Yuan Cai; Shaomin Yang; Huan Zhao; Fang Qian; Yu Han; Jie Sun; Zhike Liu; Shengzhong Liu

doi:10.1002/solr.201900220

Simultaneous Cesium and Acetate Coalloying Improves Efficiency and Stability of FA0.85MA0.15PbI3 Perovskite Solar Cell with an Efficiency of 21.95%

Shihao Yuan, Yuan Cai, Shaomin Yang, Huan Zhao, Fang Qian, Yu Han, Jie Sun, Zhike Liu, Shengzhong Liu

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

72 Scopus citations

Abstract

A simple coalloying strategy is applied to improve the efficiency and stability of FA0.85MA0.15PbI3 perovskite solar cells (PSCs) by using cesium acetate (CsAc) as an additive. It is found that the simultaneous incorporation of cation (Cs+) and anion (Ac−) into the FA0.85MA0.15PbI3 film is an effective approach to realize lattice contraction, grain size enlargement, photoelectric properties improvement, band structure modulation, and therefore the optimization of the efficiency and stability of PSCs. At optimal CsAc alloying, the FA0.85MA0.15PbI3 PSCs achieve a maximum power conversion efficiency (PCE) of 21.95% and an average of over 21%. In addition, the alloyed PSCs retain 97% of their initial PCE values after aging for 55 days in air without encapsulation.

Original language	English (US)
Journal	Solar RRL
Volume	3
Issue number	9
DOIs	https://doi.org/10.1002/solr.201900220
State	Published - Sep 1 2019
Externally published	Yes

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title = "Simultaneous Cesium and Acetate Coalloying Improves Efficiency and Stability of FA0.85MA0.15PbI3 Perovskite Solar Cell with an Efficiency of 21.95%",

abstract = "A simple coalloying strategy is applied to improve the efficiency and stability of FA0.85MA0.15PbI3 perovskite solar cells (PSCs) by using cesium acetate (CsAc) as an additive. It is found that the simultaneous incorporation of cation (Cs+) and anion (Ac−) into the FA0.85MA0.15PbI3 film is an effective approach to realize lattice contraction, grain size enlargement, photoelectric properties improvement, band structure modulation, and therefore the optimization of the efficiency and stability of PSCs. At optimal CsAc alloying, the FA0.85MA0.15PbI3 PSCs achieve a maximum power conversion efficiency (PCE) of 21.95% and an average of over 21%. In addition, the alloyed PSCs retain 97% of their initial PCE values after aging for 55 days in air without encapsulation.",

author = "Shihao Yuan and Yuan Cai and Shaomin Yang and Huan Zhao and Fang Qian and Yu Han and Jie Sun and Zhike Liu and Shengzhong Liu",

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T1 - Simultaneous Cesium and Acetate Coalloying Improves Efficiency and Stability of FA0.85MA0.15PbI3 Perovskite Solar Cell with an Efficiency of 21.95%

AU - Yuan, Shihao

AU - Cai, Yuan

AU - Yang, Shaomin

AU - Zhao, Huan

AU - Qian, Fang

AU - Han, Yu

AU - Sun, Jie

AU - Liu, Zhike

AU - Liu, Shengzhong

N1 - Generated from Scopus record by KAUST IRTS on 2023-09-21

PY - 2019/9/1

Y1 - 2019/9/1

N2 - A simple coalloying strategy is applied to improve the efficiency and stability of FA0.85MA0.15PbI3 perovskite solar cells (PSCs) by using cesium acetate (CsAc) as an additive. It is found that the simultaneous incorporation of cation (Cs+) and anion (Ac−) into the FA0.85MA0.15PbI3 film is an effective approach to realize lattice contraction, grain size enlargement, photoelectric properties improvement, band structure modulation, and therefore the optimization of the efficiency and stability of PSCs. At optimal CsAc alloying, the FA0.85MA0.15PbI3 PSCs achieve a maximum power conversion efficiency (PCE) of 21.95% and an average of over 21%. In addition, the alloyed PSCs retain 97% of their initial PCE values after aging for 55 days in air without encapsulation.

AB - A simple coalloying strategy is applied to improve the efficiency and stability of FA0.85MA0.15PbI3 perovskite solar cells (PSCs) by using cesium acetate (CsAc) as an additive. It is found that the simultaneous incorporation of cation (Cs+) and anion (Ac−) into the FA0.85MA0.15PbI3 film is an effective approach to realize lattice contraction, grain size enlargement, photoelectric properties improvement, band structure modulation, and therefore the optimization of the efficiency and stability of PSCs. At optimal CsAc alloying, the FA0.85MA0.15PbI3 PSCs achieve a maximum power conversion efficiency (PCE) of 21.95% and an average of over 21%. In addition, the alloyed PSCs retain 97% of their initial PCE values after aging for 55 days in air without encapsulation.

UR - https://onlinelibrary.wiley.com/doi/10.1002/solr.201900220

UR - http://www.scopus.com/inward/record.url?scp=85081252443&partnerID=8YFLogxK

U2 - 10.1002/solr.201900220

DO - 10.1002/solr.201900220

M3 - Article

SN - 2367-198X

VL - 3

JO - Solar RRL

JF - Solar RRL

IS - 9

ER -

Simultaneous Cesium and Acetate Coalloying Improves Efficiency and Stability of FA0.85MA0.15PbI3 Perovskite Solar Cell with an Efficiency of 21.95%

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