TITLE:
Photoelectric Properties of Crystalline and Glassy PbGeS3
AUTHORS:
Dmytro Ivanovych Bletskan, Vasyl Mykolaiovych Kabatsii
KEYWORDS:
Semiconductors; Chalcogenide Glasses; Photoconductivity
JOURNAL NAME:
Open Journal of Inorganic Non-metallic Materials,
Vol.3 No.3,
July
15,
2013
ABSTRACT:
The integrated investigations of the stationary characteristics of
photoconductivity (the spectral distribution of photoconductivity (PC),
luminous-ampere characteristics (LAC), temperature dependences of dark
photoconductivity) and the thermostimulated current (TSC) for crystalline and
glassy lead thiogermanate (PbGeS3) were performed. It was determined,
as a function of crystals growing rate, there are one or two impurity maxima
except for the native one in photoconductivity spectra. For the glassy lead
thiogermanate in the range of wave lengths of 0.4 - 1.0 μm in PC spectra was revealed the
hysteresis at the change of direction wave lengths sweep of incident light,
conditioned by the phenomenon of induced impurity conductivity. The
activation of PC, caused by thermal emptying of attachment levels, was observed
on the temperature dependences of photoconductivity.