张秀娟教授课题组在Adv. Funct. Mater.上发表论文

发布时间:2022-12-05访问量:13设置

题目:

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

作者:

Tehinke Achille Malo1,#, Zhengjun Lu1,#, Wei Deng1, Yuye Sun1, Chaoqiang Wang1, Azhar Ali Ayaz Pirzado1,2, Jiansheng Jie1, Xiujuan Zhang1,*, and Xiaohong Zhang1

单位:

1Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, Jiangsu 215123, P. R. China.

2Department of Electronic Engineering, Faculty of Engineering and Technology, University of Sindh, Allama I.I. Kazi Campus, Jamshoro, Sindh 76080, Pakistan.

摘要:

The pursuit of high-performance and integrated perovskite optoelectronic devices drives the development of efficient methods to pattern perovskite single crystals (PSCs). However, due to stochastic and multiple nucleation, PSCs obtained from traditional patterning methods still suffer from heterogeneous morphology and low crystallinity, resulting in unwanted large variation in the device performance. Herein, an effective and universal strategy is reported for the large-scale patterned growth of high-quality perovskite single-crystal microplates with uniform size and thickness. By modulating the wettability of gold nanoparticles, nucleation energetic barriers are subtly regulated and thus intractably random and multiple nucleation are fundamentally suppressed, enabling the formation of homogeneous perovskite microplates with exceptional properties in terms of ultralow surface defect density (6.1 × 107 cm−2) and high carrier mobility (176 cm2 V−1 s−1). In consequence, the photodetector array based on the patterned perovskite microplates exhibits a large photoresponsivity up to 615 A W−1, along with a low photocurrent variable coefficient <5.2%, which enables the realization of ultrasensitive and high-contrast imaging functions. This patterning technique constitutes a major step toward the deployment of PSCs in integrated optoelectronic devices.

影响因子:

18.808

分区情况:

一区

链接:

https://onlinelibrary.wiley.com/doi/10.1002/adfm.202209563



责任编辑:郭佳


返回原图
/