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- W2801836055 abstract "Photovoltaic research has moved beyond the use of single crystalline materials such as Group IV elemental Si and Group III-V compounds like GaAs to much more complex compounds of the Group I-III-VI2 with chalcopyrite structure. The ternary ABC2 chalcopyrites (A=Cu; B=In, Ga or Al; C= S, Se or Te) form a large group of semiconducting materials with diverse structural and electrical properties. These materials are attractive for thin film photovoltaic application for a number of reasons. The bandgap of CuInSe2 is relatively low, 1.04 eV, but it can be adjusted to better match the solar spectrum either by substituting part of In by Ga or part of Se by S. Most reported and popular Cu(In,Ga)Se2 (CIGS) is one of its derivative. Efficiency of the CIGS devices with Eg >1.3 eV is reduced by the degradation of the electronic properties of the absorber leading to losses in the fill-factor and the open-circuit voltage. Alternatively, the performance can be improved by the addition of Al to form CuInAlSe2 (CIAS) absorber layers with an increase in the bandgap energy, which matches closely with the solar spectrum. In the present work an effort was made in the direction of improving the conversion efficiency by studying the influence of carrier concentration. SCAPS simulation program is used to simulate the CIAS structure numerically. The obtained results intended the significant variation in the values of conversion efficiency. Variation in the efficiency can be considered because of the relation optical absorption and carrier concentration. Observed highest efficiency is 10 %, which can be further improved by considering actual parameters of the device as well as the operating condition." @default.
- W2801836055 created "2018-05-17" @default.
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- W2801836055 date "2018-01-01" @default.
- W2801836055 modified "2023-09-24" @default.
- W2801836055 title "Influence of carrier concentration on the performance of CIAS solar cell" @default.
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- W2801836055 doi "https://doi.org/10.1063/1.5035231" @default.
- W2801836055 hasPublicationYear "2018" @default.
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