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Lateral photovoltaic ef fects in Bi2 Sr2 Co2 Oy thin films

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【作者】 闫国英； 傅广生； 白子龙； 王淑芳；

【Author】 Guoying Yan;Guangsheng Fu;Zilong Bai;Shufang Wang;School of Information Engineering,Hebei University of Technology;The College of Physics Science and Technology,Hebei University;

【机构】 School of Information Engineering,Hebei University of Technology； The College of Physics Science and Technology,Hebei University；

【摘要】 Lateral photovoltaic(LPV)effects are observed in Bi2Sr2Co2Oy(BSCO)thin films.Upon illumination of a 532-nm constant laser,the lateral photovoltage is observed to vary linearly with the laser position between two electrodes on the film surface,and the position sensitivity can be enhanced by coating a layer of graphite on the surface of the BSCO film as a light absorber.Results suggest that the LPV effect in the thin film is independent of the photo-generated carriers but originates from thermoelectric effects.The present work demonstrates a potential application of BSCO films in position-sensitive photo(thermal)detectors.

【Abstract】 Lateral photovoltaic(LPV) effects are observed in Bi2Sr2Co2Oy(BSCO) thin films. Upon illumination of a 532-nm constant laser, the lateral photovoltage is observed to vary linearly with the laser position between two electrodes on the film surface, and the position sensitivity can be enhanced by coating a layer of graphite on the surface of the BSCO film as a light absorber. Results suggest that the LPV effect in the thin film is independent of the photo-generated carriers but originates from thermoelectric effects. The present work demonstrates a potential application of BSCO films in position-sensitive photo(thermal) detectors.

【关键词】 photovoltaic； graphite； illumination； absorber； coated； attractive； linearly； attributed； fabrication； irradiation；
【基金】 supported by the National“973”Program of China(No.2011CB612305);the National Natural Science Foundation of China(No.51372064);the Nature Science Foundation for Distinguished Young Scholars of Hebei Province,China(No.2013201249);the Science and Technology Research Projects of Collegesand 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 ,2013年12期
  • 【分类号】TB383.2
  • 【被引频次】2
  • 【下载频次】28
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