| Title | Doped 0D Cs4PbCl6 single crystals featuring full-visible-region colorful luminescence |
| Authors | Qiu, Yixin Ma, Zhimin Dai, Guangkuo Fu, Xiaohua Wang, Yunsong Jia, Xinru Ma, Zhiyong |
| Affiliation | Beijing Univ Chem Technol, Coll Chem Engn, Beijing Adv Innovat Ctr Soft Matter Sci & Engn, State Key Lab Organ Inorgan Composites, Beijing 100029, Peoples R China Natl High Tech Ind Dev Zone Jingdezhen, Jingdezhen 333000, Peoples R China Peking Univ, Coll Engn, Beijing 100871, Peoples R China |
| Keywords | HALIDE PEROVSKITE NANOCRYSTALS CSPBX3 NANOCRYSTALS BR CL EMISSION ABSORPTION BRIGHT |
| Issue Date | Mar-2022 |
| Publisher | JOURNAL OF MATERIALS CHEMISTRY C |
| Abstract | To achieve colorful emissions spanning the full visible region is a fascinating target and remains full of challenge for metal ion doped 0D Cs4PbX6 perovskites. Herein, we succeed in obtaining four millimeter-scale Zr4+/Sn2+/Sb3+/Mn2+ doped 0D Cs4PbCl6 single crystals at the B-site by the hydrothermal method. Fascinatingly, these single crystals emit luminescence with blue, green, yellow and red colors, precisely covering the entire visible region. The homogeneous distribution of dopants in the single crystals is validated by optical microscopy, X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD) and energy dispersive X-ray spectrometry (EDS) mapping. Four doped single crystals adopt two main emission mechanisms. The Mn2+-doped single crystal undergoes the free exciton-Mn2+ energy transfer process and then the spin-forbidden T-4(1g) -> (6)A(1g) transition of Mn2+. Other three doped single crystals adopt the luminescence kinetics via self-trapped excitons (STEs) associated with the dopants. Interestingly, Sb3+ and Sn2+ behave as both emitters and sensitizers. Moreover, we successfully tune the dopants' ratio in Cs(4)PbCl(6)via two different methods, the hydrothermal synthesis and the precipitation synthesis. To date, this has been the first study that reports four luminescent doped 0D perovskite Cs4PbCl6 single crystals across the entire visible region. Furthermore, it is the first time to acquire a Zr4+-doped lead halide perovskite single crystal. |
| URI | http://hdl.handle.net/20.500.11897/642194 |
| ISSN | 2050-7526 |
| DOI | 10.1039/d2tc00638c |
| Indexed | SCI(E) |
| Appears in Collections: | 工学院 |
