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.
Highlights
A solid-state device known as thermoelectric power, based on Seebeck effect, provides direct energy conversion from thermal energy into electrical energy due to temperature gradient
We developed a novel detailed balance model for Photo thermoelectric generators (PTEGs) and applied this model to both state-of-the-art and idealized materials
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
Summary
A solid-state device known as thermoelectric power, based on Seebeck effect, provides direct energy conversion from thermal energy into electrical energy due to temperature gradient. There are still a number of problems associated with the location, as well as a clear orientation of the individual converters along the optical axis of light, the likelihood of increased radiation losses when it is separated by spectral composition and blocking of the converter design due to the need to add optical devices. In this regard, the results of the development and initial studies of the electrophysical and energetic characteristics of the convertor with a selected gap are presented in this article. This article gives the method for the theoretical calculation of the mechanism of absorption and refraction of light radiation of a selected wavelength a photoelectric converter and the design of an effective photo thermal converter with a fixed slit, direct-and non-direct-electron transitions from the valence band to the conduction band were analyzed to minimize the loses
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