DETERMINATION OF THE FLAT-BAND POTENTIAL OF SEMICONDUCTOR PARTICLES IN SUSPENSION BY PHOTOVOLTAGE MEASUREMENT

Authors
ROY AM DE GC SASMAL N BHATTACHARYYA SS
Citation
Am. Roy et al., DETERMINATION OF THE FLAT-BAND POTENTIAL OF SEMICONDUCTOR PARTICLES IN SUSPENSION BY PHOTOVOLTAGE MEASUREMENT, International journal of hydrogen energy, 20(8), 1995, pp. 627-630
Citations number
31
Categorie Soggetti
Energy & Fuels","Environmental Sciences","Physics, Atomic, Molecular & Chemical
Journal title
International journal of hydrogen energy → ACNP
ISSN journal
03603199
Volume
20
Issue
8
Year of publication
1995
Pages
627 - 630
Database
ISI
SICI code
0360-3199(1995)20:8<627:DOTFPO>2.0.ZU;2-X
Abstract
The flatband potentials, E(fb), of CdS and CdS/Ag2S (1.5wt%) particles have been determined from photovoltage measurements in the presence o f electron acceptor methyl viologen (MV(2+)). Measurements have been t aken whilst irradiating the semiconductor suspensions with visible lig ht. This is one of the simplest and newly developed techniques for the determination of the E(fb) of semiconductors. The E(fb) for CdS and C dS/Ag2S (1.5wt%) are found to be -0.724 V and -0.761 V respectively vs SCE at pH 14.