globalchange  > 气候变化与战略
DOI: 10.1016/j.scib.2020.03.010
论文题名:
Self-trapped exciton engineering for white-light emission in colloidal lead-free double perovskite nanocrystals
作者: Cong M.; Yang B.; Hong F.; Zheng T.; Sang Y.; Guo J.; Yang S.; Han K.
刊名: Science Bulletin
ISSN: 20959273
出版年: 2020
卷: 65, 期:13
起始页码: 1078
结束页码: 1084
语种: 英语
中文关键词: Carrier-phonon coupling ; Double perovskite ; Hot-carrier cooling ; Nanocrystal ; Trap state
英文关键词: Chlorine compounds ; Energy gap ; Nanocrystals ; Perovskite ; Phonons ; Photoluminescence ; Broad-band photoluminescence ; Carrier cooling ; Carrier-phonon coupling ; Charge carrier dynamics ; Double perovskites ; Exciton-phonon couplings ; Lead-free perovskites ; Trap state ; Excitons
英文摘要: Intrinsic broadband photoluminescence (PL) of self-trapped excitons (STEs) are systematically studied in lead-free double perovskite nanocrystals (NCs). It is clarified that bandgap (direct/indirect) has important influence on the PL properties of STEs: indirect bandgap NCs exhibit strong exciton-phonon coupling which results in non-radiative STEs, while direct bandgap NCs exhibit moderate exciton-phonon coupling, inducing bright STE PL. Furthermore, by alloying K+ and Li+ ions in Cs2AgInCl6 NCs, the NCs exhibit broadband white-light emission. Charge-carrier dynamics study indicates that the efficient white-light emission originates from the further suppressed non-radiative processes of the STEs in the direct bandgap structure. This work may deepen the understanding of STEs and guide the design of high-performance lead-free perovskites. © 2020 Science China Press
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/169871
Appears in Collections:气候变化与战略

Files in This Item:

There are no files associated with this item.


作者单位: State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China; University of the Chinese Academy of Sciences, Beijing, 100039, China; Institute of Molecular Sciences and Engineering, Shandong University, Qingdao, 266237, China; Key Laboratory of Chemical Lasers, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China

Recommended Citation:
Cong M.,Yang B.,Hong F.,et al. Self-trapped exciton engineering for white-light emission in colloidal lead-free double perovskite nanocrystals[J]. Science Bulletin,2020-01-01,65(13)
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Cong M.]'s Articles
[Yang B.]'s Articles
[Hong F.]'s Articles
百度学术
Similar articles in Baidu Scholar
[Cong M.]'s Articles
[Yang B.]'s Articles
[Hong F.]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Cong M.]‘s Articles
[Yang B.]‘s Articles
[Hong F.]‘s Articles
Related Copyright Policies
Null
收藏/分享
所有评论 (0)
暂无评论
 

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.