Key parameters of textured silicon solar cells of 26.6% photoconversion efficiency
| Autor: | R.M. Korkishko, V.V. Chernenko, Vitaliy Kostylyov, A. V. Sachenko, Mykhaylo Evstigneev, V.M. Vlasyuk, B.F. Dvernikov, Igor Sokolovskyi |
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| Rok vydání: | 2021 |
| Předmět: |
010302 applied physics
Materials science Silicon chemistry.chemical_element 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Engineering physics Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials chemistry 0103 physical sciences Key (cryptography) Electrical and Electronic Engineering 0210 nano-technology |
| Zdroj: | Semiconductor Physics, Quantum Electronics and Optoelectronics. 24:175-184 |
| ISSN: | 1605-6582 1560-8034 |
| Popis: | A new approach to modeling the parameters of high efficiency textured silicon solar cells (SCs) has been presented. Unlike conventional optimization formalisms, our approach additionally includes such important factors as the non-radiative Auger recombination of excitons via deep impurity levels as well as electron-hole pairs recombination in the space charge region. A simple phenomenological expression offered by us earlier for the external quantum efficiency of the textured silicon solar cells with account of the photocurrent in the long-wave part of the absorption spectrum has been also used. Applying this approach, the key parameters of textured silicon SCs, namely: short-circuit current, open-circuit voltage and photoconversion efficiency, have been theoretically determined. The proposed formalism allows calculating the thickness dependence of photoconversion efficiency, which is in good agreement with the experimental results obtained for the heterojunction SCs with the record photoconversion efficiency of 26.6%. The offered approach and the results of applying this phenomenological expression for the external quantum efficiency of the photocurrent in the long-wave part of the absorption spectrum can be used to optimize the characteristics of high efficiency textured SCs based on monocrystalline silicon. |
| Databáze: | OpenAIRE |
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