卤化物钙钛矿的单双向离子迁移
Emerging Irreversible and Reversible Ion Migrations in Perovskites
摘要
Abstract
Metal halide perovskite(MHP)materials show great prospects in applications such as solar cells,luminescent displays,and biomedicines,owing to their outstanding visible light absorption,photoelectric conversion,adjustable energy level structure,and low energy consumption.Their exceptional properties,such as high visible light absorption,efficient photoelectric conversion,adjustable energy level structure,and low energy consumption,have attracted significant attention.However,the presence of ion migration in MHPs has been identified as a critical challenge,leading to reduced energy conversion efficiency and device instability.Overcoming this obstacle is crucial for the commercialization of perovskite-based technologies.In recent years,extensive research has been conducted to understand the conditions and mechanisms of ion migration in perovskite materials,as well as develop strategies to mitigate its adverse effects.This paper adopts a dialectical perspective on ion migration,with a specific focus on energy barriers.A comprehensive review is provided,covering the fundamental concepts and formation mechanisms of both irreversible unidirectional and reversible bidirectional ion migrations.This paper begins by presenting a detailed summary of the degradation processes caused by irreversible unidirectional ion migrations phenomena induced by external fields,including illumination,stress/strain,thermal and electrical fields.Understanding the underlying mechanisms of such degradation is essential to address the stability concerns associated with perovskite devices.Moreover,the overview of bidirectional reversible ion migration phenomena in perovskite is presented.The cyclic formation and restoration of Schottky barriers at the interface can significantly influence the photoelectrical properties and impact the overall performance of perovskite devices.Various strategies for regulating ion migrations under external fields are discussed,aiming to enhance device stability and performance.By understanding the energy landscape and migration pathways,researchers can develop effective strategies to control and optimize ion migrations,ultimately improving the photoelectric conversion performance of perovskite devices.This paper provides comprehensive analysis of ion migration in perovskite materials,addressing fundamental concepts,ion migration mechanisms,and strategies for regulating ion migrations.By providing a clear understanding of the challenges associated with ion migration,this work contributes to the advancement of perovskite-based technologies and facilitates their commercialization.Ultimately,the optimization of ion migration control will lead to improved performance and stability of perovskite devices,enabling their widespread adoption in various applications.关键词
卤化物钙钛矿/太阳能电池/离子迁移/单向不可逆离子迁移/双向可逆离子迁移Key words
Halide perovskite/Solar cells/Ion migration/Irreversible unidirectional ion migration/Reversible bidirectional ion migration分类
化学引用本文复制引用
李睿,尚子璇,赵晋津,刘欢,焦忆楠,秦胜建,孟婕,宋佳钰,闫融融,苏航,陈恒彬..卤化物钙钛矿的单双向离子迁移[J].物理化学学报,2024,40(11):19-20,2.基金项目
The project was supported by the National Natural Science Foundation of China(U2130128),Yanzhao Young Scientist Project from Natural Science Foundation of Hebei Province(B2023205040),Basic Research Cooperation Special Foundation of Beijing-Tianjin-Hebei Region(H2022205047,22JCZXJC00060,and E3B33911DF),Central Government Guiding Local Science and Technology Development Project(216Z4302G),Hebei Administration for Market Supervision Science and Technology Project List(2023ZC03),Innovation Capability Improvement Plan Project of Hebei Province(22567604H),and Ph.D.Scientific Research Start-up Fund of Hebei Normal University(L2023B18). 国家自然科学基金(U2130128) （U2130128）
河北省自然科学基金-燕赵青年科学家专项(B2023205040) （B2023205040）
京津冀基础研究合作专项(H2022205047,22JCZXJC00060,E3B33911DF) （H2022205047,22JCZXJC00060,E3B33911DF）
中央引导地方科技发展资金(216Z4302G) （216Z4302G）
河北省市场监管局科技计划(2023ZC03) （2023ZC03）
河北省创新能力提升计划(22567604H) （22567604H）
河北师范大学博士科研启动基金(L2023B18) （L2023B18）
