Polarized Optoelectronics of CsPbX3 (X = Cl, Br, I) Perovskite Nanoplates with Tunable Size and Thickness

Xuexi Sheng, Gaoyu Chen, Chong Wang, Weiqi Wang, Junfeng Hui, Qi Zhang, Kehan Yu, Wei Wei, Mingdong Yi, Mian Zhang, Yu Deng, Peng Wang, Xiangxing Xu, Zhihui Dai, Jianchun Bao, Xun Wang

Research output: Contribution to journalArticlepeer-review

66 Scopus citations

Abstract

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.

Original languageEnglish
Article number1800283
JournalAdvanced Functional Materials
Volume28
Issue number19
DOIs
StatePublished - 9 May 2018
Externally publishedYes

Keywords

  • inorganic perovskite
  • nanoplates
  • photoluminescence
  • polarized optoelectronics
  • self-assembly

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