Highly stable hybrid perovskite light-emitting diodes based on Dion-Jacobson structure
2019-08
发表期刊SCIENCE ADVANCES
ISSN2375-2548
卷号5期号:8
发表状态已发表
DOI10.1126/sciadv.aaw8072
摘要

Organic-inorganic hybrid halide perovskites are emerging as promising materials for next-generation light-emitting diodes (LEDs). However, the poor stability of these materials has been the main obstacle challenging their application. Here, we performed first-principles calculations, revealing that the molecule dissociation energy of Dion-Jacobson (DJ) structure using 1,4-bis(aminomethyl)benzene molecules as bridging ligands is two times higher than the typical Ruddlesden-Popper (RP) structure based on phenylethylammonium ligands. Accordingly, LEDs based on the DJ structure show a half-lifetime over 100 hours, which is almost two orders of magnitude longer compared with those based on RP structural quasi-two-dimensional perovskite. To the best of our knowledge, this is the longest lifetime reported for all organic-inorganic hybrid perovskites operating at the current density, giving the highest external quantum efficiency (EQE) value. In situ tracking of the film composition in operation indicates that the DJ structure was maintained well after continuous operation under an electric field.

收录类别SCI ; SCIE ; EI
语种英语
资助项目National Natural Science Foundation of China[U1632118] ; National Natural Science Foundation of China[21571129]
WOS研究方向Science & Technology - Other Topics
WOS类目Multidisciplinary Sciences
WOS记录号WOS:000481798400038
出版者AMER ASSOC ADVANCEMENT SCIENCE
EI主题词Calculations ; Electric fields ; Ligands ; Molecules ; Perovskite
WOS关键词TOTAL-ENERGY CALCULATIONS ; HIGH-EFFICIENCY ; QUANTUM DOTS ; ELECTROLUMINESCENCE ; DEGRADATION
原始文献类型Article
引用统计
文献类型期刊论文
条目标识符https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/64562
专题物质科学与技术学院_硕士生
物质科学与技术学院_PI研究组_柯友启组
物质科学与技术学院_PI研究组_宁志军组
物质科学与技术学院_PI研究组_刘伟民组
物质科学与技术学院_本科生
物质科学与技术学院_博士生
共同第一作者Liao, Yuan; Wei, Qi
通讯作者Liu, Weimin; Ning, Zhijun
作者单位
1.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China
2.Chinese Acad Sci, Shanghai Inst Ceram, Shanghai 200050, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
第一作者单位物质科学与技术学院
通讯作者单位物质科学与技术学院
第一作者的第一单位物质科学与技术学院
推荐引用方式
GB/T 7714
Shang, Yuequn,Liao, Yuan,Wei, Qi,et al. Highly stable hybrid perovskite light-emitting diodes based on Dion-Jacobson structure[J]. SCIENCE ADVANCES,2019,5(8).
APA Shang, Yuequn.,Liao, Yuan.,Wei, Qi.,Wang, Ziyu.,Xiang, Bo.,...&Ning, Zhijun.(2019).Highly stable hybrid perovskite light-emitting diodes based on Dion-Jacobson structure.SCIENCE ADVANCES,5(8).
MLA Shang, Yuequn,et al."Highly stable hybrid perovskite light-emitting diodes based on Dion-Jacobson structure".SCIENCE ADVANCES 5.8(2019).
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