A transparent ultraviolet triggered amorphous selenium p-n junction

Journal Article · Mon Apr 11 00:00:00 EDT 2011 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.3579262· OSTI ID:21518385

Saito, Ichitaro; Soga, Kenichi; Overend, Mauro; Amaratunga, Gehan A. J. ^[1]; Miyazaki, Wataru; Onishi, Masanori; Masuzawa, Tomoaki; Okano, Ken ^[2]; Kudo, Yuki ^[3]; Yamada, Takatoshi ^[4]; Koh, Angel; Chua, Daniel ^[5]; Aono, Masami ^[6]

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1. Department of Engineering, University of Cambridge, 9 JJ Thomson Avenue, Cambridge CB3 0FA (United Kingdom)
2. Department of Physics, International Christian University, 3-10-2 Osawa Mitaka, Tokyo 181-8585 (Japan)
3. Graduate School of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8577 (Japan)
4. Nanotube Research Center, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565 (Japan)
5. Department of Materials Science and Engineering, National University of Singapore, 21 Lower Kent Ridge Road, Singapore 119077 (Singapore)
6. Department of Materials Science and Engineering, National Defense Academy, 1-10-20 Hashirimizu Yokosuka, Kanagawa 239-8686 (Japan)

This paper will introduce a semitransparent amorphous selenium (a-Se) film exhibiting photovoltaic effects under ultraviolet light created through a simple and inexpensive method. We found that chlorine can be doped into a-Se through electrolysis of saturated salt water, and converts the weak p-type material into an n-type material. Furthermore, we found that a p-n diode fabricated through this process has shown an open circuit voltage of 0.35 V toward ultraviolet illumination. Our results suggest the possibility of doping control depending on the electric current during electrolysis and the possibility of developing a simple doping method for amorphous photoconductors.

• OSTI ID: 21518385
• Journal Information: Applied Physics Letters, Vol. 98, Issue 15; Other Information: DOI: 10.1063/1.3579262; (c) 2011 American Institute of Physics; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
AMORPHOUS STATE
CHLORINE ADDITIONS
DOPED MATERIALS
ELECTRIC CURRENTS
ELECTROLYSIS
ILLUMINANCE
OPACITY
PHOTOCONDUCTORS
PHOTOVOLTAIC EFFECT
P-N JUNCTIONS
SELENIUM
SEMICONDUCTOR DIODES
SEMICONDUCTOR MATERIALS
THIN FILMS
ULTRAVIOLET RADIATION
CURRENTS
ELECTROMAGNETIC RADIATION
ELEMENTS
FILMS
LYSIS
MATERIALS
OPTICAL PROPERTIES
PHOTOELECTRIC EFFECT
PHYSICAL PROPERTIES
RADIATIONS
SEMICONDUCTOR DEVICES
SEMICONDUCTOR JUNCTIONS
SEMIMETALS