Pure zero-dimensional Cs4PbBr6 single crystal rhombohedral microdisks with high luminescence and stability
文献类型：期刊论文
| 作者 | Zhang, Haihua1,2; Liao, Qing3; Wu, Yishi1; Chen, Jianwei1,2; Gao, Qinggang3; Fu, Hongbing1,3,4 |
| 刊名 | PHYSICAL CHEMISTRY CHEMICAL PHYSICS
 |
| 出版日期 | 2017-11-21 |
| 卷号 | 19期号:43页码:29092-29098 |
| 英文摘要 | Zero-dimensional (0D) perovskite Cs4PbBr6 has been speculated to be an efficient solid-state emitter, exhibiting strong luminescense on achieving quantum confinement. Although several groups have reported strong green luminescence from Cs4PbBr6 powders and nanocrystals, doubts that the origin of luminescence comes from Cs4PbBr6 itself or CsPbBr3 impurities have been a point of controversy in recent investigations. Herein, we developed a facile one-step solution self-assembly method to synthesize pure zero-dimensional rhombohedral Cs4PbBr6 micro-disks (MDs) with a high PLQY of 52% +/- 5% and photoluminescence full-width at half maximum (FWHM) of 16.8 nm. The obtained rhombohedral MDs were high quality single-crystalline as demonstrated by XRD and SAED patterns. We demonstrated that Cs4PbBr6 MDs and CsPbBr3 MDs were phase-separated from each other and the strong green emission comes from Cs4PbBr6. Power and temperature dependence spectra evidenced that the observed strong green luminescence of pure Cs4PbBr6 MDs originated from direct exciton recombination in the isolated octahedra with a large binding energy of 303.9 meV. Significantly, isolated PbBr64- octahedra separated by a Cs+ ion insert in the crystal lattice is beneficial to maintaining the structural stability, depicting superior thermal and anion exchange stability. Our study provides an efficient approach to obtain high quality single-crystalline Cs4PbBr6 MDs with highly efficient luminescence and stability for further optoelectronic applications. |
| 语种 | 英语 |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/39122]  |
| 专题 | 化学研究所_光化学实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Chem, BNLMS, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Capital Normal Univ, Dept Chem, Beijing Key Lab Opt Mat & Photon Devices, Beijing 100048, Peoples R China 4.Collaborat Innovat Ctr Chem Sci & Engn, Tianjin 300072, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Haihua,Liao, Qing,Wu, Yishi,et al. Pure zero-dimensional Cs4PbBr6 single crystal rhombohedral microdisks with high luminescence and stability[J]. PHYSICAL CHEMISTRY CHEMICAL PHYSICS,2017,19(43):29092-29098. |
| APA | Zhang, Haihua,Liao, Qing,Wu, Yishi,Chen, Jianwei,Gao, Qinggang,&Fu, Hongbing.(2017).Pure zero-dimensional Cs4PbBr6 single crystal rhombohedral microdisks with high luminescence and stability.PHYSICAL CHEMISTRY CHEMICAL PHYSICS,19(43),29092-29098. |
| MLA | Zhang, Haihua,et al."Pure zero-dimensional Cs4PbBr6 single crystal rhombohedral microdisks with high luminescence and stability".PHYSICAL CHEMISTRY CHEMICAL PHYSICS 19.43(2017):29092-29098. |
入库方式： OAI收割
来源：化学研究所
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