期刊
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
卷 11, 期 19, 页码 8275-8282出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpclett.0c02560
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资金
- MOST of China [2016YFA0200602]
- National Natural Science Foundation of China [21421063, 11474260, 11504364, 21633007]
- Anhui Initiative in Quantum Information Technologies [AHY090200]
- Chinese Academy of Sciences [XDB01020200]
- Fundamental Research Funds for the Central Universities [WK2340000088]
- Anhui Natural Science Foundation [1608085QA17]
Metal-halide perovskites have shown excellent optoelectronic properties, among which the array-type architecture is highly desirable. However, both the susceptibility of perovskites to polar solvents and the complex 3D geometry of array structure have led to great challenges for device fabrication and performance, which hinders their further applications. Here, we report a simple but efficient approach highly compatible with the state-of-the-art microelectronics processes to construct single-crystalline array light-emitting diodes (LEDs) of perovskite. The well-aligned single-crystalline array was sandwiched as the emission layer, among the carefully designed multilayer ITO/NiO/CsPbBr3/PMMA/ZnO/Ag structure. Through systematically altering the size of CsPbBr3 single crystal and the thickness of insulation layer, the device performance has been optimized and eventually achieved a 99% working ratio in a 62 x 47 array. Moreover, a prototype device of LED display was also fabricated. These results clearly demonstrate that our strategy is efficient, reliable, and versatile, which can be easily extended to other perovskites.
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