Optimizing thin-film silicon solar cells with nanostructured TiO2 and a silver back reflector for enhanced energy conversion efficiency.
Appl Opt
; 63(14): 3885-3891, 2024 May 10.
Article
em En
| MEDLINE
| ID: mdl-38856351
ABSTRACT
This paper investigates the improvement of energy conversion efficiency in thin-film silicon solar cells by employing periodic nanostructures of T i O 2 on the silicon active layer and a back reflector featuring periodic nanostructures of silver. The objective is to increase the optical path length, enhance absorption probability for longer wavelengths, and subsequently improve solar cell performance. Three silicon-based solar cell configurations are proposed and simulated using the finite difference time domain (FDTD) method to assess their performance. Electrical characteristics are obtained through the drift-diffusion method. The resulting short-circuit current density increased from 40.93 to 65.28 to 95.373m A/c m 2 for the three cells, leading to significant improvements in conversion efficiency with observed values of 20.39%, 33.26%, and 47.28%, respectively, in the optimized structures. Furthermore, we compare the simulation results of the three structures with those of a reference structure and several structures previously proposed in the literature.
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MEDLINE
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En
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Appl Opt
Ano de publicação:
2024
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Article