Simulation of electron-beam-induced-current profiles for thin-film heteroj unction analysis
- 1 July 1995
- journal article
- research article
- Published by Taylor & Francis in Philosophical Magazine Part B
- Vol. 72 (1) , 75-80
- https://doi.org/10.1080/13642819508239064
Abstract
The application of the electron-beam-induced-current (EBIC) method to thin-film heterojunction solar cells is discussed. The aim is to extract the effective minority carrier diffusion length Leff in the absorbing layer of the cell which is closely related to the diffusion length of light-generated charge carriers. Current versus primary electron energy profiles for the planar EBIC configuration are simulated by considering the effect of back-surface recombination and backscatter-ing of primary electrons at the back contact. It is shown that for an absorber layer with thickness in the range of the diffusion length, the accuracy limit for the determination of Leff is reduced to 30% owing to the influence of interface recombination at the back contact.This publication has 14 references indexed in Scilit:
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