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PVSC-2020-2020-783 TEM-based Cathodoluminescence of a Seleniumalloyed CdTe Solar Cell.pdf (445.97 kB)

TEM-based cathodoluminescence of a Selenium-alloyed CdTe solar cell

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conference contribution
posted on 2021-01-19, 13:27 authored by Thomas Fiducia, Ashley Howkins, Ali AbbasAli Abbas, Budhika Mendis, Amit H Munshi, Kurt Barth, Walajabad S Sampath, Michael WallsMichael Walls
Since 2015, commercial sample holders have been available that enable cathodoluminescence imaging of semiconductors in the TEM. Despite this, issues with low signal have meant that high resolution TEM-CL imaging has so far not been achieved on a solar cell. Here, we use xenon ion milling and cryogenic sample cooling to boost signal from the TEM foil, enabling high resolution CL imaging of a bilayer CdSeTe/CdTe solar cell for the first time. The results show that selenium has a passivation effect on grain boundaries in alloyed CdSeTe material, helping to explain the superior performance of CdSeTe solar cells.

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

2020 47th IEEE Photovoltaic Specialists Conference (PVSC)

Pages

2233-2234

Source

2020 IEEE 47th Photovoltaic Specialists Conference (PVSC)

Publisher

IEEE

Version

  • AM (Accepted Manuscript)

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

2021-01-05

Copyright date

2021

ISBN

9781728161150

ISSN

0160-8371

Language

  • en

Location

Calgary, OR, Canada

Event dates

15th June 2020 - 21st August 2020

Depositor

Prof Michael Walls. Deposit date: 18 January 2021

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