Study of simulations of double graded InGaN solar cell structures
Abstract
The performances of various configurations of InGaN solar cells are compared using nextnano software. Here we compare a flat base graded wall GaN/InGaN structure, with an InxGa1-xN well with sharp GaN contact layers, and an InxGa1-xN structure with InxGa1-xN contact layers, i.e. a homojunction. The doping in the graded structures are the result of polarization doping at each edge (10 nm from each side) due to the graded structure, while the well structures are intentionally doped at each edge (10 nm from each side) equal to the doping concentration in the graded structure. The solar cells are characterized by their open-circuit voltage, V_oc, short circuit current, I_sc, solar efficiency, and energy band diagram. The results indicate that an increase in I_sc and efficiency results from increasing both the fixed and the maximum indium compositions, while the V_oc decreases. The maximum efficiency is obtained for the InGaN well with 60% In.
Keywords
Cite
@article{arxiv.2110.12864,
title = {Study of simulations of double graded InGaN solar cell structures},
author = {Mirsaeid Sarollahi and Manal A. Aldawsari and Rohith Allaparthi and Malak A. Refaei and Reem Alhelais and Md Helal Uddin Maruf and Yuriy Mazur and Morgan E. Ware},
journal= {arXiv preprint arXiv:2110.12864},
year = {2022}
}
Comments
14 pages, 12 figures