Title :
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
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;
Conference_Titel :
Vacuum Nanoelectronics Conference (IVNC), 2012 25th International
Conference_Location :
Jeju
Print_ISBN :
978-1-4673-1983-6
Electronic_ISBN :
pending
DOI :
10.1109/IVNC.2012.6316837
