Work

Light-induced transverse voltage effect in c-axis inclined BiCuSeO single crystalline thin films

Year: 2016

Type: article

Abstract: Light-induced transverse voltage effects in c-axis inclined BiCuSeO thin films have been investigated by using different lasers with the wavelength ranging from ultraviolet (UV) to near infrared (NIR). Open-circuit voltage signals are all clearly observed when the film surface is irradiated by these lasers. Especially, a very large voltage signal with a magnitude exceeding several volts is obtained under the irradiation of the UV pulsed laser, and the voltage polarity of this signal is reversed when the sample is irradiated from the substrate side. A possible mechanism based on the transverse thermoelectric effect is proposed to explain the above experiment results. This work demonstrates the potential application of BiCuSeO for broad-band photodetectors, especially for UV pulsed light detection.

Source: Optical Materials Express

DOI: 10.1364/ome.6.000558

Authors: Guoying Yan, Lian Wang, Shuang Qiao, Xiaolin Wu, Shufang Wang, Guangsheng Fu

Institution: Hebei University

Language: English

Topic: Advanced Thermoelectric Materials and Devices

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $1,843

Funder: National Natural Science Foundation of China