期刊
ADVANCED FUNCTIONAL MATERIALS
卷 28, 期 19, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.201800283
关键词
inorganic perovskite; nanoplates; photoluminescence; polarized optoelectronics; self-assembly
类别
资金
- National Natural Science Foundation of China (NSFC) [51572120, 21431003, 21521091, 21533012, 21625502]
- China Ministry of Science and Technology [2016YFA0202801]
- Six Talent Peaks Project in Jiangsu Province [184080H102231]
- Nanjing Normal University Young Leading Talent Fund [184080H20210]
Low dimensional semiconductor nanomaterials have shown their tailorable properties for a variety of promising applications in decades. Here a general strategy to synthesize all-inorganic CsPbX3 (X = Cl, Br, I or their mixture) perovskite 2D nanoplates by introducing additional metal halides MX'(2) or MX'(3) (M = Cu, Zn, Al or Pb, etc.; X' = Cl, Br or I) is reported. These CsPbX3 perovskite nanoplates have uniform thickness and tunable size, which can be feasibly controlled by the component and ratio of the metal halides, temperature, time, and ligands. The well-defined morphology of the nanoplates makes them ideal building blocks for the self-assembly in the face-to-face and column-by-column arrangement. Compared to the optically isotropic CsPbX3 nanocubes, the 2D CsPbX3 nanoplates exhibit remarkable polarized UV-vis absorption and photoluminescence not only in liquid solvent and solid resin matrix, but also in self-assembled films. An optoelectronic photodetector sensitive for linear polarized light is fabricated to demonstrate the proof-of-concept.
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