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Abstract
Dilute nitride semiconductors, such as GaAs1–xNx alloys, have attracted considerable attention due to their unique physical properties and wide range of their possible application in optoelectronics. In this report, a comprehensive numerical simulation under solar illumination of AM1.5G with SCAPS software, is used to find the optimum geometrical and physical parameters that yield the best efficiency of an n-GaAsN-based Schottky solar cell. This optimisation task is a function of the nitrogen concentration, the metal work function, the doping and the thickness of the GaAsN layer. According to our results, the choice of metal that allows to have a high barrier height while controlling the doping and the thickness of the GaAsN active layer allows the development of high quality GaAs1-xNx based SJSCs. Efficiency greater than 27% is expected with a nitrogen concentration of x = 0.004 for this new design of the n-GaAsN Schottky solar cell.
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Acknowledgements
We gratefully acknowledge to Dr Marc Burgelman, University of Gent, Belgium, for providing the SCAPS simulation software.
Disclosure statement
No potential conflict of interest was reported by the authors.