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非晶态As₂S₈半导体薄膜的光激励现象的研究及应用

Research and application of photoinduced phenomena of amorphous As₂S₈ semiconductor films

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【Author】 ZOU Lin-er~1,CHEN Bao-xue~1,CHEN Lin~1,YUAN Yi-fang~1,HIROMI Hamanaka~2,MAMORU Iso~3(1.University of Shanghai for Science and Technology,Shanghai 200093,China)(2.Tokyo Hosei University,Tokyo 184-8584,Japan;3.Tokyo University of Agriculture and Technology,Tokyo 184-8588,Japan)

【机构】上海理工大学光学与电子信息工程学院；日本法政大学工学院物质化学系；日本东京农工大学工学院应用化学系上海200093；上海200093；日本184-8584；日本184-8588；

【摘要】实验研究了非晶态As2S8半导体薄膜在紫外汞灯和He_Cd激光照射下的光诱导现象,证实了光照射后的As2S8薄膜的折射率增大,体积缩小,可见光吸收谱的吸收带蓝移。在此基础上,应用光折变效应试制了As2S8条波导,观测到As2S8条波导的光阻断效应,实现了光_光效应的开关功能。更多还原

【Abstract】 The photoinduced phenomena of As₂S₈ film under an ultraviolet and He-Cd laser irradiation are reported.It is confirmed that the refractive index of As₂S₈ film increases,the volume of As₂S₈ film decreases,and the visible optical absorption spectra edge of As₂S₈ film is shifted to the short wavelength after light irradiation.Based on study of these phenomena,an As₂S₈ channel waveguide was fabricated successfully by applying the photorefractive effect.On study of the optical stopping effect of As₂S₈ channel waveguide,it was found that the application of this effect possesses a useful switching function with the photo-optical effect.更多还原