A-site phase segregation in mixed cation perovskite

Lang Liu; Jiuzhou Lu; Hao Wang; Zhenhua Cui; Giacomo Giorgi; Yang Bai; Qi Chen

doi:10.1016/j.matre.2021.100064

A-site phase segregation in mixed cation perovskite

Lang Liu, Jiuzhou Lu, Hao Wang, Zhenhua Cui, Giacomo Giorgi, Yang Bai^*, Qi Chen^*

^*Corresponding author for this work

Research output: Contribution to journal › Review article › peer-review

40 Citations (Scopus)

Abstract

Mixed cation strategy greatly benefits the enhancement of device performance and chemical stability. However, adverse impact also accompanies the mixed cation system simultaneously. It brings the compositional instability, wherein the homogeneous film is likely to segregate into multi-phases during the fabrication and ageing process, thus resulting in the efficiency reduction of perovskite solar cells (PSCs) devices. This review focuses on the cation induced phase segregation, and elucidates the segregation mechanisms from the perspectives of film formation and ageing process, respectively. Furthermore, the influence of cation segregation on device performance and operational stability are discussed. And based on these understandings, viable strategies are proposed for the design of phase-stable mixed composition halide perovskites and for suppressing segregation to benefit its development towards commercial applications.

Original language	English
Article number	100064
Journal	Materials Reports: Energy
Volume	1
Issue number	4
DOIs	https://doi.org/10.1016/j.matre.2021.100064
Publication status	Published - Nov 2021

Keywords

Mixed cation
Perovskite
Phase segregation
Photovoltaic
Stability

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.matre.2021.100064

Cite this

@article{ec5ed67db1dd41d5ba2ee01801d06530,

title = "A-site phase segregation in mixed cation perovskite",

abstract = "Mixed cation strategy greatly benefits the enhancement of device performance and chemical stability. However, adverse impact also accompanies the mixed cation system simultaneously. It brings the compositional instability, wherein the homogeneous film is likely to segregate into multi-phases during the fabrication and ageing process, thus resulting in the efficiency reduction of perovskite solar cells (PSCs) devices. This review focuses on the cation induced phase segregation, and elucidates the segregation mechanisms from the perspectives of film formation and ageing process, respectively. Furthermore, the influence of cation segregation on device performance and operational stability are discussed. And based on these understandings, viable strategies are proposed for the design of phase-stable mixed composition halide perovskites and for suppressing segregation to benefit its development towards commercial applications.",

keywords = "Mixed cation, Perovskite, Phase segregation, Photovoltaic, Stability",

author = "Lang Liu and Jiuzhou Lu and Hao Wang and Zhenhua Cui and Giacomo Giorgi and Yang Bai and Qi Chen",

note = "Publisher Copyright: {\textcopyright} 2021 Chongqing Xixin Tianyuan Data & Information Co., Ltd",

year = "2021",

month = nov,

doi = "10.1016/j.matre.2021.100064",

language = "English",

volume = "1",

journal = "Materials Reports: Energy",

issn = "2666-9358",

publisher = "KeAi Communications Co.",

number = "4",

}

TY - JOUR

T1 - A-site phase segregation in mixed cation perovskite

AU - Liu, Lang

AU - Lu, Jiuzhou

AU - Wang, Hao

AU - Cui, Zhenhua

AU - Giorgi, Giacomo

AU - Bai, Yang

AU - Chen, Qi

PY - 2021/11

Y1 - 2021/11

N2 - Mixed cation strategy greatly benefits the enhancement of device performance and chemical stability. However, adverse impact also accompanies the mixed cation system simultaneously. It brings the compositional instability, wherein the homogeneous film is likely to segregate into multi-phases during the fabrication and ageing process, thus resulting in the efficiency reduction of perovskite solar cells (PSCs) devices. This review focuses on the cation induced phase segregation, and elucidates the segregation mechanisms from the perspectives of film formation and ageing process, respectively. Furthermore, the influence of cation segregation on device performance and operational stability are discussed. And based on these understandings, viable strategies are proposed for the design of phase-stable mixed composition halide perovskites and for suppressing segregation to benefit its development towards commercial applications.

AB - Mixed cation strategy greatly benefits the enhancement of device performance and chemical stability. However, adverse impact also accompanies the mixed cation system simultaneously. It brings the compositional instability, wherein the homogeneous film is likely to segregate into multi-phases during the fabrication and ageing process, thus resulting in the efficiency reduction of perovskite solar cells (PSCs) devices. This review focuses on the cation induced phase segregation, and elucidates the segregation mechanisms from the perspectives of film formation and ageing process, respectively. Furthermore, the influence of cation segregation on device performance and operational stability are discussed. And based on these understandings, viable strategies are proposed for the design of phase-stable mixed composition halide perovskites and for suppressing segregation to benefit its development towards commercial applications.

KW - Mixed cation

KW - Perovskite

KW - Phase segregation

KW - Photovoltaic

KW - Stability

UR - http://www.scopus.com/inward/record.url?scp=85148370094&partnerID=8YFLogxK

U2 - 10.1016/j.matre.2021.100064

DO - 10.1016/j.matre.2021.100064

M3 - Review article

AN - SCOPUS:85148370094

SN - 2666-9358

VL - 1

JO - Materials Reports: Energy

JF - Materials Reports: Energy

IS - 4

M1 - 100064

ER -

A-site phase segregation in mixed cation perovskite

Abstract

Keywords

UN SDGs

Access to Document

Other files and links

Fingerprint

Cite this