Comparison of periodic light-trapping structures in thin InGaN-based solar cell

A. Merabti ,R. Abdeldjebar ,S. Nour ,H. Aissani ,A. A. Djatout

doi:10.15251/JOR.2025.214.399

A. Merabti

R. Abdeldjebar

S. Nour

H. Aissani

A. A. Djatout

a Exact Sciences, Higher Normal School of Béchar, Algeria

b Semiconductor Devices Physics Laboratory, University Tahri Mohammed

Béchar, Algeria

Journal of Ovonic Research 2025, 21(4),399-407; https://doi.org/10.15251/JOR.2025.214.399

Submitted：Apr 21, 2025

Accepted：Jul 03, 2025

Published：Jul 15, 2025

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A. Merabti ,R. Abdeldjebar ,S. Nour ,H. Aissani ,A. A. Djatout . (2025). Journal of Ovonic Research. Comparison of periodic light-trapping structures in thin InGaN-based solar cell, 21(4), ,399-407. https://doi.org/10.15251/JOR.2025.214.399

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Abstract

This study presents a theoretical analysis of light-trapping efficiency in thin-film InGaN solar cells by examining four distinct one-dimensional periodic surface structures: a proposed geometric model [ 1], pyramid, trapezium, and triangle with two curved. Utilizing the Finite Element Method (FEM), we systematically analyze the optical absorption characteristics for various grating configurations with fixed structural parameters. Our results reveal that the proposed geometric model offers enhanced broadband absorption across the visible spectrum and maintains superior performance over a wide range of incidence angles, indicating strong potential for photovoltaic applications.

Keywords

Thin-film

Grating structure

Absorption

InGaN

Light trapping