Facet-Defect Tolerant Bi-Doped Cs2Ag x Na1-x InCl6 Nanoplatelets with a Near-Unity Photoluminescence Quantum Yield

doi:10.1021/acs.nanolett.3c02830

	Facet-Defect Tolerant Bi-Doped Cs₂Ag_xNa_1-xInCl₆ Nanoplatelets with a Near-Unity Photoluminescence Quantum Yield
	Zhang, Baowei 1,2; Liang, Qi 1,2; Yong, Xue 3; Wu, Han 1,2; Chu, Zhaoyang4,5 ; Ma, Yanhang4,5 ; Brovelli, Sergio 6; Manna, Liberato 7; Lu, Siyu 1,2
	2023-09-01
发表期刊	NANO LETTERS (IF:9.6[JCR-2023],10.1[5-Year])
ISSN	1530-6984
EISSN	1530-6992
卷号	23 期号:19 页码:9050-9055
发表状态	已发表
DOI	10.1021/acs.nanolett.3c02830
摘要	We report the colloidal synthesis of Bi-doped Cs2Ag (x) Na1-x InCl6 double perovskite nanoplatelets (NPLs) exhibiting a near-unity photoluminescence quantum yield (PLQY), a record emission efficiency for nanoscale lead-free metal halides. A combination of optical spectroscopies revealed that nonradiative decay processes in the NPL were suppressed, indicating a well-passivated surface. By comparison, nanocubes with the same composition and surface ligands as the NPLs had a PLQY of only 40%. According to our calculations, the type of trap states arising from the presence of surface defects depends on their specific location: defects located on the facets of nanocubes generate only shallow traps, while those at the edges result in deep traps. In NPLs, due to their extended basal facets, most of the surface defects are facet defects. This so-called facet-defect tolerant behavior of double perovskites explains the more efficient optical emission of NPLs compared to that of nanocubes.
关键词	double perovskite facet-defect tolerance nanoplatelets near-unity quantum yield
URL	查看原文
收录类别	SCI ; EI
语种	英语
资助项目	National Natural Science Foundation of China[
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS类目	Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
WOS记录号	WOS:001074620200001
出版者	AMER CHEMICAL SOC
EI入藏号	20234415004221
EI主题词	Quantum yield
EI分类号	482.2 Minerals ; 741.1 Light/Optics ; 801.4 Physical Chemistry ; 802.2 Chemical Reactions ; 804 Chemical Products Generally ; 951 Materials Science
原始文献类型	Journal article (JA)
引用统计	正在获取...
文献类型	期刊论文
条目标识符	https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/340925
专题	物质科学与技术学院物质科学与技术学院_PI研究组_马延航组物质科学与技术学院_博士生
通讯作者	Lu, Siyu
作者单位	1.Zhengzhou Univ, Green Catalysis Ctr, Zhengzhou 450000, Peoples R China 2.Zhengzhou Univ, Coll Chem, Zhengzhou 450000, Peoples R China 3.Univ Sheffield, Dept Chem, Sheffield S3 7HF, England 4.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China 5.ShanghaiTech Univ, Shanghai Key Lab High Resolut Electron Microscopy, Shanghai 201210, Peoples R China 6.Univ Milano Bicocca, Dept Mat Sci, I-20126 Milan, Italy 7.Ist Italiano Tecnol, Nanochem, I-16163 Genoa, Italy
推荐引用方式 GB/T 7714	Zhang, Baowei,Liang, Qi,Yong, Xue,et al. Facet-Defect Tolerant Bi-Doped Cs₂Ag_xNa_1-xInCl₆ Nanoplatelets with a Near-Unity Photoluminescence Quantum Yield[J]. NANO LETTERS,2023,23(19):9050-9055.
APA	Zhang, Baowei.,Liang, Qi.,Yong, Xue.,Wu, Han.,Chu, Zhaoyang.,...&Lu, Siyu.(2023).Facet-Defect Tolerant Bi-Doped Cs₂Ag_xNa_1-xInCl₆ Nanoplatelets with a Near-Unity Photoluminescence Quantum Yield.NANO LETTERS,23(19),9050-9055.
MLA	Zhang, Baowei,et al."Facet-Defect Tolerant Bi-Doped Cs₂Ag_xNa_1-xInCl₆ Nanoplatelets with a Near-Unity Photoluminescence Quantum Yield".NANO LETTERS 23.19(2023):9050-9055.