journal article·2018-05

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

Advanced Functional Materials· Volume 28· Issue 19
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Abstract

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.
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Research context

OpenAlex topics: Perovskite Materials and Applications · 2D Materials and Applications · Solid-state spectroscopy and crystallography

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Jiangsu Key Laboratory of Biofunctional Materials School of Chemistry and Materials Science Nanjing Normal University Nanjing 210046 P. R. China

Shaanxi Key Laboratory of Degradable Biomedical Materials Shaanxi R&D Center of Biomaterials and Fermentation Engineering School of Chemical and Engineering Northwest University Xi'an 710069 P. R. China

School of Optoelectronic Engineering Nanjing University of Posts & Telecommunications Nanjing 210023 P. R. China

National Laboratory of Solid State Microstructures College of Engineering and Applied Sciences and Collaborative Innovation Center of Advanced Microstructures Nanjing University Nanjing 210093 P. R. China

The Key Laboratory of Organic Optoelectronics and Molecular Engineering Department of Chemistry Tsinghua University Beijing 100084 P. R. China

Funding

National Natural Science Foundation of China

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