Enhancement in absorption of amorphous Si solar cell by using conducting anti-reflection coating and plasmonic nano-structured back reflector

TL;DR

This study demonstrates that combining a conducting anti-reflection coating with a plasmonic nano-structured back reflector significantly enhances light absorption in amorphous silicon solar cells, achieving around 80% absorption.

Contribution

The paper introduces a novel combination of optimized ITO anti-reflection coating and silver nano hemispherical back reflector to improve a-Si solar cell absorption.

Findings

Absorption improved to ~80% with combined coatings and structures.

Optimized ITO thickness of 65 nm enhances spectral performance.

Silver nano hemispherical back reflector boosts light absorption.

Abstract

In this work is comprising of simulation results of amorphous Si (a-Si) solar cell, in which ITO was used as an anti-reflection coating (ARC). The thickness of ITO was optimized (65 nm) to achieve better performance for spectral region of 350-800 nm. The reflectivity of the solar cell using ITO and SiNx as an ARC were compared. The result is found similar. Further to enhance the light absorption in a-Si, silver nano hemispherical back reflector was used. And it was found that the average absorption by the a-Si has been improved to ~80% by using ITO and hemi spherical nano structured back reflector.