中文版 | English
Title

Strong circularly polarized luminescence from quantum dots/2D chiral perovskites composites

Author
Corresponding AuthorWu, Dan; Wang, Kai
Publication Years
2023
DOI
Source Title
ISSN
1998-0124
EISSN
1998-0000
Abstract
Chiral perovskites (CPs) have attracted enormous attentions since they have combined chirality and optoelectrical properties well which is promising in circularly polarized luminescence (CPL) application and of great importance for future spin-optoelectronics. However, there is a key contradiction that in chiral perovskites chirality distorts the crystal structure, leading to poor photoluminescence (PL) properties. Achieving the balance between chirality and PL is a major challenge for strong CPL from chiral perovskites. Differently, two-dimensional (2D) chiral perovskite has shown fascinating chiral induced spin selectivity (CISS) effect which can act as spin injector under ambient conditions. Here, we propose an effective strategy to achieve high CPL activity generated from quantum dots (QDs) by introducing 2D chiral perovskite as a chiral source, providing spin polarized carriers through the CISS effect. The as-synthesized QDs/CP composites exhibit dissymmetry factors (g(lum)) up to 9.06 x 10(-3). For the first time, we performed grazing incident wide angle X-ray scattering (GIWAXS) measurements, showing the chirality originates from the distorted lattices caused by the large chiral organic cations. Besides, time-resolved PL (TR-PL) measurements verify the enhanced CPL activity should be attributed to the charge transport between two components. These findings provide a useful method to achieve CPL in QDs/2D chiral perovskite heterojunctions which could be promising in spin-optoelectronics application.
Keywords
URL[Source Record]
Indexed By
Language
English
SUSTech Authorship
First ; Corresponding
Funding Project
Guangdong Basic and Applied Basic Research Foundation["2022A1515011071","2019A1515111093","2022A1515011614"] ; National Natural Science Foundation of China["62122034","61875082","61905107","62204107","62205138"] ; Innovation Project of Department of Education of Guangdong Province[2019KTSCX157] ; Shenzhen Innovation Project["JCYJ20210324104413036","JCYJ20190809152411655"] ; China Postdoctoral Science Foundation["2021M691397","2021M691411"]
WOS Research Area
Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS Subject
Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied
WOS Accession No
WOS:000921255300004
Publisher
Data Source
Web of Science
Citation statistics
Cited Times [WOS]:0
Document TypeJournal Article
Identifierhttp://kc.sustech.edu.cn/handle/2SGJ60CL/475033
DepartmentDepartment of Electrical and Electronic Engineering
Affiliation
1.Southern Univ Sci & Technol, Dept Elect & Elect Engn, Shenzhen 518055, Peoples R China
2.Shenzhen Technol Univ, Coll Engn Phys, Shenzhen 518118, Peoples R China
3.Shenzhen Technol Univ, Coll New Mat & New Energies, Shenzhen 518118, Peoples R China
4.Chinese Acad Sci, Shanghai Adv Res Inst, Shanghai 201210, Peoples R China
First Author AffilicationDepartment of Electrical and Electronic Engineering
Corresponding Author AffilicationDepartment of Electrical and Electronic Engineering
First Author's First AffilicationDepartment of Electrical and Electronic Engineering
Recommended Citation
GB/T 7714
Wang, Qingqian,Zhu, Hongmei,Chen, Wei,et al. Strong circularly polarized luminescence from quantum dots/2D chiral perovskites composites[J]. Nano Research,2023.
APA
Wang, Qingqian.,Zhu, Hongmei.,Chen, Wei.,Hao, Junjie.,Wang, Zhaojin.,...&Wang, Kai.(2023).Strong circularly polarized luminescence from quantum dots/2D chiral perovskites composites.Nano Research.
MLA
Wang, Qingqian,et al."Strong circularly polarized luminescence from quantum dots/2D chiral perovskites composites".Nano Research (2023).
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