METHOD OF EXPANDING THE SOLAR CELLS ABSORPTION SPECTRA BY APPLYING PYRAZOLINE LUMINOPHOR LAYER

Abstract

An analysis of the industries for which the wide implementation of solar energy is currently considered relevant has been carried out. The aim of the study is to build a methodology for the synthesis of nanostructured pyrazoline dyes that can be used as a coating material for solar cells based on monocrystalline, polycrystalline and amorphous silicon, as well as the development of a system for evaluating the effectiveness and optimization of this methodology according to the target indicators calculated at the quantitative level. In order to build a holistic methodology for the synthesis of photovoltaic coating phosphor, the functions and arguments are defined in the article, on the basis of which the target performance indicators for compensating for the difference in the spectra of solar radiation and absorption of the solar cell substrate are further calculated. Factors for reducing the efficiency of photoelectric converters based on polycrystalline silicon have been determined. As part of the concept of broadening the solar cells absorption spectra by applying the luminophor layer, a method for the synthesis of the nanostructured pyrazoline photoluminescent dyes class is proposed. An experimental study was conducted based on the correlation of the solar radiation spectrum, the absorption spectrum of polycrystalline silicon, as well as the absorption and photoluminescence spectra of synthesized luminophores. A complex mathematical model has been developed for evaluating the effectiveness of the presented technique for expanding the absorption spectra of solar cells and optimizing the specified approach in accordance with the target indicators. The author has considered the procedure of synthesis of nanostructured pyrazoline dye and typical parameters of the procedure that affect the characteristics of this class of phosphors, as well as the corresponding designations. Determination of the general procedure for the synthesis and control of the characteristics of the photoluminescent coating material of the photovoltaic converter, as well as a series of experimental studies allowed the author to identify pyrazoline phosphors that are suitable as a coating material for a photovoltaic converter. Keywords: solar cells, absorption spectrum, photoluminescence spectrum, pyrazoline luminophor, nanostructuring procedure, laser annealing, target functions.