Evaluation of Thin-Film Photodevices and Development of Artificial Retina

  • Kimura, Mutsumi (Dept. of Electronics and Informatics, Ryukoku Univ. Innovative Materials and Processing Res. Ctr., Ryukoku Univ.) ;
  • Shima, Takehiro (Dept. of Electronics and Informatics, Ryukoku Univ.) ;
  • Yamashita, Takehiko (Dept. of Electronics and Informatics, Ryukoku Univ.) ;
  • Nishizaki, Yoshitaka (Dept. of Electronics and Informatics, Ryukoku Univ.) ;
  • Hara, Hiroyuki (Frontier Device Res. Ctr., Seiko Epson Corp.)
  • Published : 2007.08.27

Abstract

First, thin-film photodevices are evaluated, and a p/i/n thin-film phototransistor (TFPT) is recommended because the photo-induced current is relatively high and independent of the applied voltage. Next, an artificial retina is developed using the p/i/n TFPTs, and it is found that it can detect photo illuminance profile with sensitivity control.

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