Disentangling the Luminescent Mechanism of Cs4PbBr6 Single Crystals from an Ultrafast Dynamics Perspective
Liu, Rui-Tong1; Zhai, Xin-Ping1; Zhu, Zhi-Yuan1; Sun, Bing1; Liu, Duan-Wu1; Ma, Bo1; Zhang, Ze-Qi1; Sun, Chun-Lin1; Zhu, Bing-Li2; Zhang, Xiao-Dong3
刊名JOURNAL OF PHYSICAL CHEMISTRY LETTERS
2019-11-07
卷号10期号:21页码:6572-6577
ISSN号1948-7185
DOI10.1021/acs.jpclett.9b02590
产权排序2
英文摘要

New all-inorganic perovskites like Cs4PbBr6 provide rich luminescent tools and particularly novel physical insights, including their zero-dimensional structure and controversial emitting mechanism. The ensuing debate over the origin of the luminescence of Cs4PbBr6 inspired us to tackle the issue through fabricating high-quality Cs4PbBr6 single crystals and employing ultrafast dynamics study. Upon photoexcitation, Cs4PbBr6 underwent dynamics steps distinct from that of CsPbBr3, including exciton migration to the defect level on a time scale of several hundred femtoseconds, exciton relaxation within the defect states on the picosecond time scale, and exciton recombination from the subnanosecond to nanosecond time scale. The observation disclosed that crystal defects of Cs4PbBr6 induced green emission while CsPbBr3 mainly relied on quantum confinement to emit at room temperature. The study provides an in-depth understanding of the photoinduced multistep dynamics steps of Cs4PbBr6 associated with display and photovoltaic applications, establishing Cs4PbBr6 as a new candidate for uses associated with the perovskite family of materials.

语种英语
出版者AMER CHEMICAL SOC
WOS记录号WOS:000495805100021
内容类型期刊论文
源URL[http://ir.opt.ac.cn/handle/181661/31928]  
专题空间科学微光探测技术研究室
作者单位1.Lanzhou Univ, Key Lab Nonferrous Met Chem & Resources Utilizat, Key Lab Special Funct Mat & Struct Design, Coll Chem & Chem Engn,Minist Educ,SKLAOC, Lanzhou 730000, Gansu, Peoples R China
2.Chinese Acad Sci, Xian Inst Opt & Precis Mech, Xian 710119, Shaanxi, Peoples R China
3.Natl Key Lab Mat Behav & Evaluat Technol Space En, Harbin 150001, Heilongjiang, Peoples R China
推荐引用方式
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Liu, Rui-Tong,Zhai, Xin-Ping,Zhu, Zhi-Yuan,et al. Disentangling the Luminescent Mechanism of Cs4PbBr6 Single Crystals from an Ultrafast Dynamics Perspective[J]. JOURNAL OF PHYSICAL CHEMISTRY LETTERS,2019,10(21):6572-6577.
APA Liu, Rui-Tong.,Zhai, Xin-Ping.,Zhu, Zhi-Yuan.,Sun, Bing.,Liu, Duan-Wu.,...&Zhang, Hao-Li.(2019).Disentangling the Luminescent Mechanism of Cs4PbBr6 Single Crystals from an Ultrafast Dynamics Perspective.JOURNAL OF PHYSICAL CHEMISTRY LETTERS,10(21),6572-6577.
MLA Liu, Rui-Tong,et al."Disentangling the Luminescent Mechanism of Cs4PbBr6 Single Crystals from an Ultrafast Dynamics Perspective".JOURNAL OF PHYSICAL CHEMISTRY LETTERS 10.21(2019):6572-6577.
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