Optoelectronic Modeling of Graded-Bandgap Thin-Film Solar Cells
Thin-film solar cells are cheap and easy to manufacture but require improvements as their efficiencies are low compared to that of the commercially dominant crystalline-silicon solar cells. A coupled optoelectronic model was formulated and implemented along with the differential evolution algorithm to assess the efficacy of grading the bandgap of the absorber layer in three thin-film solar cells. Optimal grading was predicted to yield efficiency of 21.1% with a 2200-nm-thick CIGS absorber layer for the CIGS solar cell, 21.14% with a 870-nm-Thick CZTSSe layer for the CZTSSe solar cell, and 34.5% with a 2000-nm-Thick AlGaAs layer for the AlGaAs solar cell. For a solar cell with two bandgap-graded absorber layers, an efficiency of 34.45% was predicted with a 300-nm-Thick CIGS layer and a 870-nm-Thick CZTSSe layer. For colored solar cells, efficiency loss was predicted from 10% to 20%, depending upon the percentage of incoming solar photons rejected.
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Work Title Optoelectronic Modeling of Graded-Bandgap Thin-Film Solar Cells Access Creators - F. Ahmad
- A. Lakhtakia
- P. B. Monk
- B. J. Civiletti
License In Copyright (Rights Reserved) Work Type Conference Proceeding Publisher - 2021 IEEE 32nd International Conference on Microelectronics (MIEL)
Publication Date October 25, 2021 Publisher Identifier (DOI) - https://doi.org/10.1109/MIEL52794.2021.9569027
Deposited January 23, 2023 Versions
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Lakhtakia_21_6v5.pdf -
Added Creator F. Ahmad
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Added Creator A. Lakhtakia
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Added Creator P. B. Monk
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Added Creator B. J. Civiletti
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- 2021 IEEE 32nd International Conference on Microelectronics (MIEL)
2021-09-12- 2021-10-25
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