期刊
JOURNAL OF PHYSICS D-APPLIED PHYSICS
卷 51, 期 43, 页码 -出版社
IOP Publishing Ltd
DOI: 10.1088/1361-6463/aaddea
关键词
Sb-2(S1-xSex)(3) solar cells; radiative limit; non-radiative recombination; solar cell modeling; minority carrier lifetime
资金
- Sener-Conacyt
- University of Guadalajara (Programa Especial de Estimulos para Academicos de Reciente Incorporacion con Perfil de Alto Nivel)
- COFAA
- EDI of IPN
- University of Guadalajara (PRO-SNI)
The compound Sb-2(S1-xSex)(3) has recently attracted a great deal of attention from the scientific community for solar cell applications. However, Sb-2(S1-xSex)(3) inorganic solar cell efficiencies are still limited to values lower than 7%, further studies contributing to a better understanding of the limiting factors behind this technology being necessary. In particular, no theoretical works on Sb-2(S1-xSex)(3) solar cell modeling have been previously reported. In this work, we present results on Sb-2(S1-xSex)(3 )solar cell modeling under the radiative and non-radiative limits for the first time, where our results are compared to experimental reported data. First, the impact of different Se/(S + Se) compositional ratios and absorber thicknesses on Sb-2(S1-xSex)(3) solar cell parameters under the radiative limit is studied, demonstrating that an efficiency of 29% can be achieved under Sc/(S + Se) compositional ratios in the range of 0.34-0.48 for Sb-2(S1-xSex)(3) thicknesses higher than 1.5 mu m. Furthermore, the impact of different linearly graded band-gaps and a notch-shape configuration of grading are evaluated. In addition, the role of different Sb-2(S1-xSex)(3) minority carrier lifetime values on solar cells is estimated, demonstrating that for absorbers described by minority carrier lifetime values about 10(-9 )s, it would be better to fabricateSb(2)(S1-xSex)(3) solar cells with Se/(S + Se) compositional ratios lower than 0.4. Finally, the influence of low illumination intensity values is presented and discussed.
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