title: Development of an amorphous selenium-based photodetector driven by a diamond cold cathode.
abstract: Amorphous-selenium (a-Se) based photodetectors are promising candidates for imaging devices, due to their high spatial resolution and response speed, as well as extremely high sensitivity enhanced by an internal carrier multiplication. In addition, a-Se is reported to show sensitivity against wide variety of wavelengths, including visible, UV and X-ray, where a-Se based flat-panel X-ray detector was proposed. In order to develop an ultra high-sensitivity photodetector with a wide detectable wavelength range, a photodetector was fabricated using a-Se photoconductor and a nitrogen-doped diamond cold cathode. In the study, a prototype photodetector has been developed, and its response to visible and ultraviolet light are characterized.
authors.affiliation: Department of Material Science, International Christian University, 181-8585 Tokyo, Japan. kenokano@icu.ac.jp.
authors.forename: Tomoaki
authors.initials: T
authors.lastname: Masuzawa
authors.forename: Ichitaro
authors.initials: I
authors.lastname: Saito
authors.forename: Takatoshi
authors.initials: T
authors.lastname: Yamada
authors.forename: Masanori
authors.initials: M
authors.lastname: Onishi
authors.forename: Hisato
authors.initials: H
authors.lastname: Yamaguchi
authors.forename: Yu
authors.initials: Y
authors.lastname: Suzuki
authors.forename: Kousuke
authors.initials: K
authors.lastname: Oonuki
authors.forename: Nanako
authors.initials: N
authors.lastname: Kato
authors.forename: Shuichi
authors.initials: S
authors.lastname: Ogawa
authors.forename: Yuji
authors.initials: Y
authors.lastname: Takakuwa
authors.forename: Angel T T
authors.initials: AT
authors.lastname: Koh
authors.forename: Daniel H C
authors.initials: DH
authors.lastname: Chua
authors.forename: Yusuke
authors.initials: Y
authors.lastname: Mori
authors.forename: Tatsuo
authors.initials: T
authors.lastname: Shimosawa
authors.forename: Ken
authors.initials: K
authors.lastname: Okano
mesh_terms: D018130:Diamond / Q000737:chemistry* / Q000528:radiation effects; D004566:Electrodes; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008027:Light; D010783:Photometry / Q000295:instrumentation*; D012643:Selenium / Q000737:chemistry* / Q000528:radiation effects; D013696:Temperature; D014159:Transducers
chemical_list: D018130:Diamond; D012643:Selenium