Development of efficient solar cells with the use of multifunctional multitextures

Authors

DOI:

https://doi.org/10.15587/1729-4061.2017.96906

Keywords:

solar cell, porous silicon, photoelectric converter, conversion efficiency, multifunctional microtexture

Abstract

Here we demonstrate the prospects of creating a solar cells using the hybrid technologies of obtaining multifunctional multitextures of porous silicon (PS) to the frontal surface. We conducted analysis of the existing models of PSand selected the models, most suitable for the creation of microtexture. We theoretically examined the relationship between the diameter of pore dP, porosity P and the region of specific surface S. On the samples with high specific resistance, we explored the interaction between porosity P(t) and the region of specific surface S(t) of the PS grown by the electrochemical etching of silicon substrates. Depending on the technological parameters, it is possible to form the layers of macro-, micro- or nanopores. Multifunctional multitextures were fabricated on the frontal surface of photoelectric converters (SC). VAC were measured by the spectral conditions AM 1,5G, experiments for both samples of SC were carried out on the silicon substrates with the same parameters and area. SC parameters were confirmed by the volt-ampere characteristics of SC and resulting measurements of efficiency in the obtained SC and spectral characteristics.

Spectral characteristic for the multitexture in the range of 400–1150 nm has a significant feature; it practically has no high values in the infrared range. This significantly reduces the integral coefficient of reflectivity for the frontal surface multitexture of SC ~7 %, different from other integral coefficients of reflectivity. For the chemical texture ~17.5 %, random pyramids ~11.2 %, for the polished surface of Si – larger than 35 %.

Author Biographies

Valerij Yerokhov, Lviv Polytechnic National University S. Bandera str., 12, Lviv, Ukraine, 79013

Doctor of Technical Sciences, Associate Professor

Department of Semiconductor Electronics 

Olga Ierokhova, Pidstryhach Institute for Applied Problems of Mechanics and Mathematics National Academy of Sciences of Ukraine Naukova str., 3-b, Lviv, Ukraine, 79060

Postgraduate student

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Published

2017-04-29

How to Cite

Yerokhov, V., & Ierokhova, O. (2017). Development of efficient solar cells with the use of multifunctional multitextures. Eastern-European Journal of Enterprise Technologies, 2(8 (86), 45–51. https://doi.org/10.15587/1729-4061.2017.96906

Issue

Vol. 2 No. 8 (86) (2017): Energy-saving technologies and equipment

Section

Energy-saving technologies and equipment

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Copyright (c) 2017 Valerij Yerokhov, Olga Ierokhova

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