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High speed 3-dimensional characterisation of graded CdSeTe/CdTe PV devices using a xenon plasma-focused ion beam (PFIB)

conference contribution
posted on 18.10.2021, 08:45 by Vlad KornienkoVlad Kornienko, Stuart RobertsonStuart Robertson, Ryan MaclachlanRyan Maclachlan, Tushar Shimpi, Walajabad Sampath, Kurt L Barth, Thomas Fiducia, Ali AbbasAli Abbas, Yau TseYau Tse, Jake BowersJake Bowers, Michael WallsMichael Walls
3D electron backscatter diffraction (3D EBSD) was carried out using a Xe-PFIB on CdTe thin film solar cells, with a graded CdSeTe (CST) layer. Devices with different ranges of CST and CdTe thickness were investigated. Grain size, texture, coincident site lattice (CSL) boundaries through the film thickness were revealed by 3D EBSD and the elemental composition of the layers was studied using energy dispersive x-ray spectroscopy (EDS). Results show a reduction of (111) texture intensity and grain size when transitioning from CdTe to the graded (CST) layer. The CST has near randomised texture with weak (001) texture. Analysis of CSL boundaries showed that the CST layer in all devices has a lower frequency of Σ3 grain boundaries relative to other types of grain boundaries with a reduction of 15-22% from the CdTe to the CST layer.

Funding

EPSRC Centre for Doctoral Training in New and Sustainable PV

Engineering and Physical Sciences Research Council

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History

School

  • Mechanical, Electrical and Manufacturing Engineering

Research Unit

  • Centre for Renewable Energy Systems Technology (CREST)

Published in

2021 IEEE 48th Photovoltaic Specialists Conference (PVSC)

Pages

621 - 626

Source

2021 IEEE 48th Photovoltaic Specialists Conference (PVSC)

Publisher

IEEE

Version

VoR (Version of Record)

Rights holder

© IEEE

Publisher statement

Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

Publication date

2021-08-26

Copyright date

2021

ISBN

9781665419222

ISSN

0160-8371

Language

en

Location

Fort Lauderdale, FL, USA

Event dates

20th June 2021 - 25th June 2021

Depositor

Prof Michael Walls. Deposit date: 14 October 2021