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A combined Na and Cl treatment to promote grain growth in MOCVD grown CdTe thin films

Arezoo Amikhalili, Vincent Barrioz, Stuart Irvine Orcid Logo, Neil S. Beattie, Guillaume Zoppi

Journal of Alloys and Compounds, Volume: 699, Pages: 969 - 975

Swansea University Author: Stuart Irvine

Abstract

The role of sodium (Na) in cadmium telluride (CdTe) thin film photovoltaic absorbers deposited on a metal-coated substrate is investigated. Introducing Na during the growth of the structure influences the morphological and crystallographic properties of the CdTe layer grown by metal-organic chemical...

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Published in: Journal of Alloys and Compounds
ISSN: 0925-8388
Published: 2016
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URI: https://cronfa.swan.ac.uk/Record/cronfa31552
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spelling 2017-01-25T10:16:34.4482297 v2 31552 2017-01-04 A combined Na and Cl treatment to promote grain growth in MOCVD grown CdTe thin films 1ddb966eccef99aa96e87f1ea4917f1f 0000-0002-1652-4496 Stuart Irvine Stuart Irvine true false 2017-01-04 MTLS The role of sodium (Na) in cadmium telluride (CdTe) thin film photovoltaic absorbers deposited on a metal-coated substrate is investigated. Introducing Na during the growth of the structure influences the morphological and crystallographic properties of the CdTe layer grown by metal-organic chemical vapour deposition (MOCVD). It is observed that the introduction of Na between the metal and CdTe layers induces a slight randomisation via promotion of (400) and (220) orientations. It is shown that the inclusion of Na between the substrate and the Mo back metal contact enlarges the CdTe grains following a CdCl2 treatment by 50% but weakens the adhesion to the substrate. The introduction of Na between the Mo back contact and CdTe layer promotes the formation of large faceted grains for the as-grown films with an average grain size ten times larger than in the case of Na free deposition while maintaining good adhesion to the substrate. There is no further grain growth following CdCl2 treatment however the CdTe grain size is still double that of the Na-free samples. Journal Article Journal of Alloys and Compounds 699 969 975 0925-8388 Thin films; Vapour deposition; MOCVD; CdTe; Grain growth; Sodium 30 3 2016 2016-03-30 10.1016/j.jallcom.2016.12.342 COLLEGE NANME Materials Science and Engineering COLLEGE CODE MTLS Swansea University 2017-01-25T10:16:34.4482297 2017-01-04T10:12:26.5074968 College of Engineering Engineering Arezoo Amikhalili 1 Vincent Barrioz 2 Stuart Irvine 0000-0002-1652-4496 3 Neil S. Beattie 4 Guillaume Zoppi 5 0031552-04012017101327.pdf amikhalili2016.pdf 2017-01-04T10:13:27.8630000 Output 4092113 application/pdf Accepted Manuscript true 2017-12-29T00:00:00.0000000 false
title A combined Na and Cl treatment to promote grain growth in MOCVD grown CdTe thin films
spellingShingle A combined Na and Cl treatment to promote grain growth in MOCVD grown CdTe thin films
Stuart, Irvine
title_short A combined Na and Cl treatment to promote grain growth in MOCVD grown CdTe thin films
title_full A combined Na and Cl treatment to promote grain growth in MOCVD grown CdTe thin films
title_fullStr A combined Na and Cl treatment to promote grain growth in MOCVD grown CdTe thin films
title_full_unstemmed A combined Na and Cl treatment to promote grain growth in MOCVD grown CdTe thin films
title_sort A combined Na and Cl treatment to promote grain growth in MOCVD grown CdTe thin films
author_id_str_mv 1ddb966eccef99aa96e87f1ea4917f1f
author_id_fullname_str_mv 1ddb966eccef99aa96e87f1ea4917f1f_***_Stuart, Irvine
author Stuart, Irvine
author2 Arezoo Amikhalili
Vincent Barrioz
Stuart Irvine
Neil S. Beattie
Guillaume Zoppi
format Journal article
container_title Journal of Alloys and Compounds
container_volume 699
container_start_page 969
publishDate 2016
institution Swansea University
issn 0925-8388
doi_str_mv 10.1016/j.jallcom.2016.12.342
college_str College of Engineering
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hierarchy_top_id collegeofengineering
hierarchy_top_title College of Engineering
hierarchy_parent_id collegeofengineering
hierarchy_parent_title College of Engineering
department_str Engineering{{{_:::_}}}College of Engineering{{{_:::_}}}Engineering
document_store_str 1
active_str 0
description The role of sodium (Na) in cadmium telluride (CdTe) thin film photovoltaic absorbers deposited on a metal-coated substrate is investigated. Introducing Na during the growth of the structure influences the morphological and crystallographic properties of the CdTe layer grown by metal-organic chemical vapour deposition (MOCVD). It is observed that the introduction of Na between the metal and CdTe layers induces a slight randomisation via promotion of (400) and (220) orientations. It is shown that the inclusion of Na between the substrate and the Mo back metal contact enlarges the CdTe grains following a CdCl2 treatment by 50% but weakens the adhesion to the substrate. The introduction of Na between the Mo back contact and CdTe layer promotes the formation of large faceted grains for the as-grown films with an average grain size ten times larger than in the case of Na free deposition while maintaining good adhesion to the substrate. There is no further grain growth following CdCl2 treatment however the CdTe grain size is still double that of the Na-free samples.
published_date 2016-03-30T03:50:20Z
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score 10.853877