Investigations on size and composition effects on ideality factor models of InxGa1‑xN/ GaN solar cells

Yu'ang Che; Danghui Wang; Lingkun Zhang; Tianhao Yuan; Mengfan Zhang

Investigations on size and composition effects on ideality factor models of InxGa1‑xN/ GaN solar cells

Vol. 25, No. 11, pp. 2126-2133, Nov. 2025

10.1007/s43236-025-01032-2

Multiple quantum wells ∙ Solar photovoltaic cell

∙ Power conversion efficiency

∙ Ideality factor model

Abstract

The III-nitride InGaN/GaN is an ideal candidate material for the fabrication of high-performance solar photovoltaic cells due to its high absorption coefficient and perfect match to the solar spectrum. In this paper, the ideality factors of InxGa1-xN/GaN-based multiple quantum well solar photovoltaic cells with different quantum well/barrier sizes and different indium compositions are investigated by numerical simulation using the single ideality factor model and the double-ideality factor model. It is shown that a higher indium composition is accompanied by a greater ideality factor. When the quantum well thickness is determined, the ideality factor decreases with the increase of the barrier thickness. When the barrier thickness is determined, the ideality factor decreases with the increase of the well thickness. A larger ideality factor means a larger Voc, a smaller Jsc, a higher dark current, and a lower power conversion efficiency. The goal of this paper is to preliminarily explore the influence law between the double ideality factor model and the cell-related parameters of InxGa1-xN/GaN-based solar photovoltaic cells, which provides a theoretical basis for designing and improving the efficiency of InxGa1-xN/GaNbased solar photovoltaic cells.

Statistics

Show / Hide Statistics

Cumulative Counts from September 30th, 2019
Multiple requests among the same browser session are counted as one view. If you mouse over a chart, the values of data points will be shown.

Cite this article

[IEEE Style]

Y. Che, D. Wang, L. Zhang, T. Yuan, M. Zhang, "Investigations on size and composition effects on ideality factor models of InxGa1‑xN/ GaN solar cells," Journal of Power Electronics, vol. 25, no. 11, pp. 2126-2133, 2025. DOI: 10.1007/s43236-025-01032-2.

[ACM Style]

Yu'ang Che, Danghui Wang, Lingkun Zhang, Tianhao Yuan, and Mengfan Zhang. 2025. Investigations on size and composition effects on ideality factor models of InxGa1‑xN/ GaN solar cells. Journal of Power Electronics, 25, 11, (2025), 2126-2133. DOI: 10.1007/s43236-025-01032-2.