Carrier multiplication in a photodetector driven by diamond cold cathode

Author

Masuzawa, Toru ; Kuniyoshi, S. ; Onishi, M. ; Saito, Ichitaro ; Koh, A.T.T. ; Chua, Daniel H. C. ; Yamada, Tomoaki ; Okano, Kunihisa

Author_Institution

Dept. of Mater. Sci., Int. Christian Univ. Tokyo, Tokyo, Japan

fYear

2012

fDate

9-13 July 2012

Firstpage

1

Lastpage

2

Abstract

In this study, key conditions of a carrier multiplication in amorphous selenium (a-Se) films were discussed in order to increase a sensitivity of vacuum tube photodetectors. The structural and electronic properties were analyzed for a-Se films with different structure and composition. This study will open up the possibility of developing new photodetectors, such as low-dose x-ray diagnosis systems or portable photon-counting devices.

Keywords

amorphous semiconductors; diamond; photocathodes; photodetectors; selenium; semiconductor thin films; vacuum tubes; Se; amorphous selenium films; carrier multiplication; diamond cold cathode; electronic property; low-dose X-ray diagnosis systems; portable photon-counting devices; structural property; vacuum tube photodetectors; Acceleration; Charge carrier processes; Current measurement; Diamond-like carbon; Films; Photodetectors; Sensitivity; amorphous selenium; diamond cold cathode; photodetector;

fLanguage

English

Publisher

ieee

Conference_Titel

Vacuum Nanoelectronics Conference (IVNC), 2012 25th International

Conference_Location

Jeju

ISSN

pending

Print_ISBN

978-1-4673-1983-6

Electronic_ISBN

pending

Type

conf

DOI

10.1109/IVNC.2012.6316837

Filename

6316837