Suppressing the Multiple Nucleation for the Uniform Growth of Perovskite Single-Crystal Microplates Arrays toward High-Performance Optoelectronic Devices

Tehinke Achille Malo; Zhengjun Lu; Wei DengYuye SunChaoqiang WangAzhar Ali Ayaz PirzadoJiansheng JieXiujuan ZhangXiaohong Zhang

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Suppressing the Multiple Nucleation for the Uniform Growth of Perovskite Single-Crystal Microplates Arrays toward High-Performance Optoelectronic Devices

机译：Suppressing the Multiple Nucleation for the Uniform Growth of Perovskite Single-Crystal Microplates Arrays toward High-Performance Optoelectronic Devices

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The pursuit of high-performance and integrated perovskite optoelectronicdevices drives the development of efficient methods to pattern perovskitesingle crystals (PSCs). However, due to stochastic and multiple nucleation,PSCs obtained from traditional patterning methods still suffer fromheterogeneousmorphology and low crystallinity, resulting in unwantedlarge variation in the device performance. Herein, an effective and universalstrategy is reported for the large-scale patterned growth of high-qualityperovskite single-crystal microplates with uniform size and thickness. Bymodulating the wettability of gold nanoparticles, nucleation energetic barriersare subtly regulated and thus intractably random and multiple nucleation arefundamentally suppressed, enabling the formation of homogeneous perovskitemicroplates with exceptional properties in terms of ultralow surfacedefect density (6.1 × 10~7 cm~(?2)) and high carrier mobility (176 cm~2 V~(?1) s~(?1)). Inconsequence, the photodetector array based on the patterned perovskitemicroplates exhibits a large photoresponsivity up to 615 A W~(?1), along with alow photocurrent variable coefficient <5.2, which enables the realization ofultrasensitive and high-contrast imaging functions. This patterning techniqueconstitutes a major step toward the deployment of PSCs in integrated optoelectronicdevices.

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《Advanced functional materials》 |2022年第52期|2209563.1-2209563.9|共9页
作者
Tehinke Achille Malo; Zhengjun Lu; Wei DengYuye SunChaoqiang WangAzhar Ali Ayaz PirzadoJiansheng JieXiujuan ZhangXiaohong Zhang;
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Institute of Functional Nano & Soft Materials (FUNSOM)Jiangsu Key Laboratory for Carbon-Based Functional Materials & DevicesSoochow UniversitySuzhou, Jiangsu 215123, P. R. China;

Institute of Functional Nano & Soft Materials (FUNSOM)Jiangsu Key Laboratory for Carbon-Based Functional Materials & DevicesSoochow UniversitySuzhou, Jiangsu 215123, P. R. China,Department of Electronic EngineeringFaculty of Engineering and TechnologyUniv;

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controlled nucleation; perovskite photodetectors; perovskite single crystals; wettability-patterning strategies;

Suppressing the Multiple Nucleation for the Uniform Growth of Perovskite Single-Crystal Microplates Arrays toward High-Performance Optoelectronic Devices

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