Structural Mechanisms of Quasi-2D Perovskites for Next-Generation Photovoltaics  

作　　者：Hyeonseok Lee Taeho Moon Younghyun Lee Jinhyun Kim 

机构地区：[1]Department of Chemistry,Kwangwoon University,Seoul 01897,Republic of Korea [2]Department of Materials Science and Engineering,Dankook University,Cheonan 31116,Republic of Korea [3]Center for Semiconductor Technology,Korea Institute of Science and Technology(KIST),Seoul 02792,Republic of Korea

出　　处：《Nano-Micro Letters》2025年第6期297-331,共35页纳微快报(英文版)

基　　金：the Research Grant of Kwangwoon University in 2024 and the National Research Foundation of Korea(RS-2023-00236572 and RS-2023-00212110)funded by the Korea government(MSIT);the project for Collabo R&D between Industry,University,and Research Institute(RS-2024-00414524)funded by Korea Ministry of SMEs and Startups.

摘　　要：Quasi-two-dimensional(2D)perovskite embodies characteristics of both three-dimensional(3D)and 2D perovskites,achieving the superior external environment stability structure of 2D perovskites alongside the high efficiency of 3D perovskites.This effect is realized through critical structural modifications in device fabrication.Typically,perovskites have an octahedral structure,generally ABX3,where an organic ammonium cation(A’)participates in forming the perovskite structure,with A’_(n)(n=1 or 2)sandwiched between A_(n-1)B_(n)X_(3n+1)perovskite layers.Depending on whether A’is a monovalent or divalent cation,2D perovskites are classified into Ruddlesden-Popper perovskite or Dion-Jacobson perovskite,each generating different structures.Although each structure achieves similar effects,they incorporate distinct mechanisms in their formation.And according to these different structures,various properties appear,and additive and optimizing methods to increase the efficiency of 3D perovskites also exist in 2D perovskites.In this review,scientific understanding and engineering perspectives of the quasi-2D perovskite is investigated,and the optimal structure quasi-2D and the device optimization is also discussed to provide the insight in the field.

关 键 词：PEROVSKITE Dion-Jacobson RUDDLESDEN-POPPER Quantum structure Quasi-2D perovskite 

分 类 号：O61[理学—无机化学]