MgxZn1-xO-based schottky photodiode for highly color-selective ultraviolet light detection

Masaki Nakano, Takayuki Makino, Atsushi Tsukazaki, Kazunori Ueno, Akira Ohtomo, Tomoteru Fukumura, Hiroyuki Yuji, Yoshio Nishimoto, Shunsuke Akasaka, Daiju Takamizu, Ken Nakahara, Tetsuhiro Tanabe, Akira Kamisawa, Masashi Kawasaki

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)


Spectral response of Schottky photodiodes consisting of a Mg xZn1-xO (x < 0.43) thin film and a transparent conducting polymer, poly(3,4-ethylenedioxythiophene) poly(styrenesulfonate), was characterized under a zero-bias condition at room temperature. The cut-off wavelength in each photodiode was systematically tuned by Mg content (x), while its high quantum efficiency was kept near unity. The steepness In the photo-response around the cut-off wavelength was maintained for higher x samples, implying a small alloy broadening effect in this system.

Original languageEnglish
Pages (from-to)1212011-1212013
Number of pages3
JournalApplied Physics Express
Issue number12
Publication statusPublished - 2008 Dec


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