Chinese Optics Letters, 2015, 13 (6): 063101, Published Online: Sep. 14, 2018  

Effect of the thickness of light absorption layer on the light-induced transverse thermoelectric effect in Bi2Sr2Co2Oy films

Author Affiliations
1 School of Information Engineering, Hebei University of Technology, Tianjin 300401, China
2 Hebei Key Lab of Optic-Electronic Information and Materials, College of Physics Science and Technology, Hebei University, Baoding 071002, China
Abstract
Light-induced transverse thermoelectric effect is investigated in incline-oriented Bi2Sr2Co2Oy thin films covered with a graphite light absorption layer. Upon the illumination of a 980 nm cw laser, an enhanced voltage signal is detected and the improvement degree is found to be dependent on the thickness of the graphite layer. A two-dimensional (2D) heat transport model using the finite-difference method provides a reasonable explanation to the experimental data. Present results give some valuable instructions for the design of light absorption layers in this type of detector.

Guoying Yan, Liqing Sun, Shufang Wang, Guangsheng Fu. Effect of the thickness of light absorption layer on the light-induced transverse thermoelectric effect in Bi2Sr2Co2Oy films[J]. Chinese Optics Letters, 2015, 13(6): 063101.

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