Growth and High-Performance Photodetectors of CsPbBr3 Single Crystals

Pengpeng Cheng; Zehan Liu; Ruyan Kang; Jian Zhou; Xiaoshan Wang; Jia Zhao; Zhiyuan Zuo

doi:10.1021/acsomega.3c02888

Growth and High-Performance Photodetectors of CsPbBr₃ Single Crystals

ACS Omega. 2023 Jul 13;8(29):26351-26358. doi: 10.1021/acsomega.3c02888. eCollection 2023 Jul 25.

Authors

Pengpeng Cheng^{1

2}, Zehan Liu^{1

2}, Ruyan Kang³, Jian Zhou^{1

2}, Xiaoshan Wang^{1

2}, Jia Zhao^{4

2}, Zhiyuan Zuo^{1

3

2}

Affiliations

¹ Center for Optics Research and Engineering, Shandong University, Qingdao 266237, P. R. China.
² Institute of Novel Semiconductors, Shandong University, Jinan 250100, P. R. China.
³ Key Laboratory of Laser & Infrared System (Shandong University), Ministry of Education, Shandong University, Qingdao 266237, P. R. China.
⁴ School of Information Science and Engineering, Shandong University, Qingdao 266237, P. R. China.

Abstract

Organic-inorganic hybrid perovskites have demonstrated exceptional photovoltaic properties, making them highly promising for solar cells and photodetectors (PDs). However, the organic components of these materials are vulnerable to heat and strong light illumination, limiting their application prospects. All-inorganic cesium-based perovskite PDs, on the other hand, possess enhanced thermal tolerance and stability, making them ideal for perovskite applications. The utilization of a ternary mixture solvent and additives in combination with single crystal (SC) growth has enabled the production of highly crystalline SCs with a defect density of 3.79 × 10⁹ cm^-3. The performance of the SC PDs had been evaluated using metal-semiconductor-metal devices, which demonstrated excellent results with a dark current as low as 0.198 μA at 10 V bias, on-off ratios exceeding 10³, and a response time of shorter than 1 ms.