High-performance flexible photodetectors based on single-crystalline Sb2Se3 nanowires

作者：Liang, Yao^*; Wang, Yingying; Wang, Jianan; Wu, Sumei; Jiang, Dayong^*; Lian, Jiabiao^*

来源：RSC Advances, 2016, 6(14): 11501-11506.

DOI：10.1039/c5ra23542a

• VISIBLE-LIGHT PHOTODETECTORS
• ARRAYS
• PHOTORESPONSE
• NANOBELTS
• TRANSPARENT
• NANORIBBONS
• TRANSISTORS
• ELECTRODES

Antimony selenide (Sb2Se3) has many potential applications in photoelectric devices, thermoelectric cooling devices and electrochemical devices etc. It also has many special properties due to its layered structure. A simple hydrothermal method was used to synthesize Sb2Se3 nanowires of high crystalline quality. (Sb4Se6)(n) layers are parallel to the growth direction of the Sb2Se3 nanowire. A single Sb2Se3 nanowire demonstrated a remarkable response to 635 nm light at 10 V with the responsivity and external quantum efficiency of 360 A W-1 and 7.0 x 10(4)%, respectively. The rise/fall time was 0.4/1.3 s. Flexible photodetectors were fabricated by dispersing a large number of Sb2Se3 nanowires onto the Au interdigitated electrodes on PET substrates, which showed a fast response speed with the rise/fall time as low as 13/20 ms and excellent flexibility. The high-performance of the photodetectors may be partially attributed to the layered structure. Generally, high-yield Sb2Se3 nanowires synthesized by the hydrothermal method are promising candidates for high-performance flexible photodetectors.

• 出版日期2016
• 单位大连交通大学; 长春理工大学; 哈尔滨工业大学