Synthesis of Sb2S3 nanowall arrays for high performance visible light photodetectors

• Published in: Materials research bulletin Vol. 57; pp. 300 - 305
• Main Authors: Chao, Junfeng, Xing, Shumin, Zhang, Jijun, Qin, Changhai, Duan, Degong, Wu, Xinhui, Shen, Qingchao
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.09.2014
• Subjects: A. Nanostructures; A. Semiconductors; B. Optical properties; B. Optical properties; A. Nanostructures; A. Semiconductors
• ISSN: 0025-5408; 1873-4227
• DOI: 10.1016/j.materresbull.2014.06.006

[Display omitted] •Sb2S3 nanowall arrays have been synthesized via a facile polyol refluxing process.•We fabricated Sb2S3 rigid and flexible photodetectors successfully.•The photoelectric properties were studied upon visible light irradiation.•The rigid photodetector exhibit excellent photoconductive performance. By using a facile polyol and template-free refluxing process, we report the successful synthesis of Sb2S3 nanowall arrays (NWAs) on the surface of FTO substrate. The as-synthesized samples were characterized by SEM, TEM, XRD and UV–vis DRS. The NWAs-based photodetector exhibits linear photocurrent characteristics, high stability, excellent reproducible properties, low LDR (linear dynamic range) value of 8.6dB, fast response time of 0.52s and recovery time of 1.11s. The flexible photodetector was also fabricated by simply transferring the NWAs to a transparent PET substrate; it revealed good flexibility and stability. Our results imply that Sb2S3 NWAs are prospective candidates for high-performance nanoscale optoelectronic devices.