Journal
CHALCOGENIDE LETTERS
Volume 18, Issue 6, Pages 297-301Publisher
VIRTUAL CO PHYSICS SRL
Keywords
Solar cell; CIGS; Band-gap; SILVACO; Thickness; Double junction
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The paper discusses the simulation of a double junction CGS/CIGS solar cell using Silvaco ATLAS software, demonstrating the performance parameters and efficiency of the top and bottom solar cells.
The multi-Junction solar cell technique was suggested for achieving high efficiency. This paper describes the simulation of a solar cell for double junction CGS/CIGS solar cell using Silvaco ATLAS software. The simulated device performance was demonstrated in the form of current-voltage (I-V) characteristics and quantum efficiency (QE). By simulation of the tow solar cell, we have obtained for solar the top cell maximum open-circuit voltage 1.15V, a short circuit current density of 18.74 mA, a fill factor (FF) of 87.79 % and an efficiency of 18.27% and for the bottom solar cell is maximum open-circuit voltage 0.57 V, a short circuit current density of 21.52 mA, a fill factor (FF) of 82.82% and an efficiency of 10.26%. For the Tandem whose sub-cells are tied in parallel, the maximum open-circuit voltage 1.16V, a short circuit current density of 29 mA, a fill factor (FF) of 83.06% and an efficiency of 28.11%.
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