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

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【作者】 闫国英； 孙立卿； 王淑芳； 傅广生；

【Author】 Guoying Yan;Liqing Sun;Shufang Wang;Guangsheng Fu;School of Information Engineering, Hebei University of Technology;Hebei Key Lab of Optic-Electronic Information and Materials, College of Physics Science and Technology,Hebei University;

【机构】 School of Information Engineering, Hebei University of Technology； Hebei Key Lab of Optic-Electronic Information and Materials, College of Physics Science and Technology,Hebei University；

【摘要】 Light-induced transverse thermoelectric effect is investigated in incline-oriented Bi2Sr2Co2 Oythin 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 twodimensional(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.

【Abstract】 Light-induced transverse thermoelectric effect is investigated in incline-oriented Bi2Sr2Co2 Oythin 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 twodimensional(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.

【关键词】 graphite； illumination； instructions； transverse； explanation； coated； multilayer； thick； valuable； adding；
【基金】 supported by the National Natural Science Foundation of China(No.51372064);the Natural Science Foundation for Distinguished Young Scholars of Hebei Province,China(No.2013201249);the Science and Technology Research Projects of Colleges and Universities in Hebei Province(No.QN20131040)
  • 【文献出处】 Chinese Optics Letters ,中国光学快报(英文版) , 编辑部邮箱 ,2015年06期
  • 【分类号】O484.4
  • 【下载频次】21
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