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Please use this identifier to cite or link to this item: https://dspace.lboro.ac.uk/2134/17394

Title: The activation of thin film CdTe solar cells using alternative chlorine containing compounds
Authors: Maniscalco, Bianca
Abbas, Ali
Bowers, Jake W.
Kaminski, Piotr M.
Bass, Kevin
West, G.D.
Walls, Michael
Keywords: Activation treatment
Alternative compounds
Cadmium chloride
Cadmium telluride
Thin film solar cells
Issue Date: 2015
Publisher: © The Authors. Published by Elsevier B.V.
Citation: MANISCALCO, B. ... et al., 2015. The activation of thin film CdTe solar cells using alternative chlorine containing compounds. Thin Solid Films, 582, pp. 115 - 119.
Abstract: The re-crystallisation of thin film cadmium telluride (CdTe) using cadmium chloride (CdCl2) is a vital process for obtaining high efficiency photovoltaic devices. However, the precise micro-structural mechanisms involved are not well understood. In this study, we have used alternative chlorine-containing compounds to determine if these can also assist the re-crystallisation of the CdTe layer and to understand the separate roles of cadmium and chlorine during the activation. The compounds used were: tellurium tetrachloride (TeCl4), cadmium acetate (Cd(CH3CO2)2), hydrochloric acid (HCl) and zinc chloride (ZnCl2). TeCl4was used to assess the role of Cl and the formation of a Te-rich outer layer which may assist the formation of the back contact. (Cd(CH3CO2)2) and HCl were used to distinguish between the roles of cadmium and chlorine in the process. Finally, ZnCl2was employed as an alternative to CdCl2. We report on the efficacy of using these alternative Cl-containing compounds to remove the high density of planar defects present in untreated CdTe.
Description: Presented at E-MRS 2014 Spring Meeting, Symposium A, Thin-Film Chalcogenide Photovoltaic Materials. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/3.0/).
Sponsor: The authors are grateful to Dr. K. Barth and Professor W.S. Sampath of the Colorado State University for the supply of CSS deposited thin film CdTe cells using their process of reference. The authors are also grateful to EPSRC (EP/J017361/1) for funding through the Supergen SuperSolar Hub.
Version: Published
DOI: 10.1016/j.tsf.2014.10.059
URI: https://dspace.lboro.ac.uk/2134/17394
Publisher Link: http://dx.doi.org/10.1016/j.tsf.2014.10.059
ISSN: 0040-6090
Appears in Collections:Published Articles (CREST)

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