High sensitivity photodetector made of amorphous selenium and diamond cold cathode1

T. Masuzawa, I. Saito, M. Onishi, T. Ebisudani, A. T.T. Koh, D. H.C. Chua, T. Yamada, S. Ogawa, Y. Takakuwa, T. Shimosawa, K. Okano

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

In the present study, high-sensitivity photodetection has been demonstrated using an amorphous selenium (a-Se) based photodetector driven by nitrogen-doped diamond cold cathode. The emission current-applied voltage characteristics are compared between different lighting conditions, and their sensitivities are evaluated in terms of nominal quantum efficiency. The estimated nominal quantum efficiency was 10-40 for visible and up to 1000 for ultraviolet, proving a successful photodetection utilizing carrier multiplication in a-Se.

Original languageEnglish
Pages (from-to)667-670
Number of pages4
JournalCanadian journal of physics
Volume92
Issue number7-8
DOIs
Publication statusPublished - 2014 Jul

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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