TITLE:
Photo Thermal Generator of Selective Radiation Structural and Energetic Features
AUTHORS:
A. M. Kasimakhunova, Sh. A. Olimov, L. K. Mamadalieva, M. Norbutaev, Sh. S. Nazirjanova, Sajida Riffat Laraib
KEYWORDS:
Photo Converter, Thermoelectric Converter, Selective Radiation, Solid State Heat En-Gines
JOURNAL NAME:
Journal of Applied Mathematics and Physics,
Vol.7 No.6,
June
27,
2019
ABSTRACT: Photo thermoelectric generators (PTEGs) are solid
state heat engines that generate electricity from concentrated sunlight. In
this paper, we developed a novel detailed balance model for PTEGs and applied
this model to both state-of-the-art and idealized materials. This model uses thermoelectric compatibility theory to provide
analytic solutions to device efficiency in idealized materials with
temperature-dependent properties. The method for the theoretical calculation of
the mechanism of absorption and refraction of light radiation of a selected
wavelength in the volume of a photoelectric converter and the design of an
effective photo thermal converter with a
fixed slit are presented in the article. Direct- and non-direct-electron transitions from the valence band to the
conduction band are analyzed. The possibility of optimal distribution of the light spectrum on the frontal surfaces
of the solar cell and thermoelectric converter is shown. According to the
results of experimental studies, a conclusion was made that the efficiency of a
photo converter increases by a factor of
three as compared with analogues, but
operating without a thermal converter.