Calcium-stannous oxide solid solutions for solar devices (article)

Taylor, NT; Galbiati, A; Saavedra, M; et al.Hepplestone, SP
Date: 12 October 2020
Journal
Applied Physics Letters
Publisher
AIP Publishing
Publisher DOI
https://doi.org/10.1063/5.0024947
Related links
https://doi.org/10.24378/exe.2663
Abstract
In this study, solid solutions formed of SnO and CaO (termed (Sn:Ca)xO) are explored as potential solar active layers. The results indicate that a ratio of x = 7 : 1 lead to a fundamental direct band gap of 1.56 eV. In order to promote the transport of excited charge carriers from within the active layer, appropriately aligned ...
In this study, solid solutions formed of SnO and CaO (termed (Sn:Ca)xO) are explored as potential solar active layers. The results indicate that a ratio of x = 7 : 1 lead to a fundamental direct band gap of 1.56 eV. In order to promote the transport of excited charge carriers from within the active layer, appropriately aligned hole/electron transport layers need to be identified. To this end, a set of results are presented for the electronic band alignment of (Sn:Ca)7:1O with a selection of oxide transport layers, with and without oxygen vacancies. From this, it is recommended that a CaO/(Sn:Ca)7:1O/TiO2 device shows the most potential for an all-oxide solar cell.
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Physics and Astronomy

Faculty of Environment, Science and Economy

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© 2020 Author(s). Open access. All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http:// creativecommons.org/licenses/by/4.0/). h
Except where otherwise noted, this item's licence is described as © 2020 Author(s). Open access. All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http:// creativecommons.org/licenses/by/4.0/). h