Role of Heterogeneities in Staebler-Wronski Effect

TL;DR

This paper investigates how heterogeneities in hydrogenated amorphous silicon influence the Staebler-Wronski effect during light soaking, proposing that long-range potential fluctuations from heterogeneities explain many observed phenomena.

Contribution

It highlights the significance of heterogeneities and long-range potential fluctuations in understanding the Staebler-Wronski effect, offering plausible explanations for unresolved puzzles.

Findings

Heterogeneities significantly impact the Staebler-Wronski effect.

Long-range potential fluctuations can explain many observed phenomena.

Heterogeneity-related models provide plausible solutions to unresolved puzzles.

Abstract

The effect of light soaking (LS) on the properties of hydrogenated amorphous silicon presents many challenging puzzles. Some of them are discussed here, along with their present status. In particular the role of the heterogeneities in LS is examined. We find that for the majority of the solved as well unsolved puzzles the long range potential fluctuations arising from the heterogeneities in the films can provide answers which look quite plausible.