High quantum efficiency UV detection using a-Se based photodetector

Tomoaki Masuzawa, Masanori Onishi, Ichitaro Saito, Takatoshi Yamada, Angel T.T. Koh, Daniel H.C. Chua, Shuichi Ogawa, Yuji Takakuwa, Yusuke Mori, Tatsuo Shimosawa, Ken Okano

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


High-sensitivity ultraviolet (UV) photodetection has been attempted by utilizing the carrier multiplication effect in amorphous selenium. The prototype photodetector presented in this Letter showed an extremely high sensitivity to UV light, so that up to 1000 carriers are generated per incident photon. This result should lead to the development of an ultrahigh-sensitivity photodetector that can be used for spectrometric applications covering the visible to UV region.

Original languageEnglish
Pages (from-to)473-476
Number of pages4
JournalPhysica Status Solidi - Rapid Research Letters
Issue number7
Publication statusPublished - 2013 Jul


  • Amorphous selenium
  • Diamond cold cathode
  • Photodetector
  • Ultraviolet


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