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DC Field | Value | Language |
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dc.contributor.author | Fiducia, T | - |
dc.contributor.author | Howkins, A | - |
dc.contributor.author | Abbas, A | - |
dc.contributor.author | Mendis, B | - |
dc.contributor.author | Munshi, A | - |
dc.contributor.author | Barth, K | - |
dc.contributor.author | Sampath, W | - |
dc.contributor.author | Walls, J | - |
dc.date.accessioned | 2024-10-08T14:41:16Z | - |
dc.date.available | 2022-02-08 | - |
dc.date.available | 2024-10-08T14:41:16Z | - |
dc.date.issued | 2022-02-08 | - |
dc.identifier | ORCiD: Ashley Howkins https://orcid.org/0000-0001-9435-523X | - |
dc.identifier | 111595 | - |
dc.identifier.citation | Fiducia, T. et al. (2022) 'Selenium passivates grain boundaries in alloyed CdTe solar cells', Solar Energy Materials and Solar Cells, 238, 111595, pp. 1 - 7. doi: 10.1016/j.solmat.2022.111595. | en_US |
dc.identifier.issn | 0927-0248 | - |
dc.identifier.uri | https://bura.brunel.ac.uk/handle/2438/29906 | - |
dc.description | Supplementary data are available online at: https://www.sciencedirect.com/science/article/pii/S0927024822000198?via%3Dihub#appsec1 . | en_US |
dc.description.abstract | Cadmium telluride (CdTe) solar cells have achieved efficiencies of over 22%, despite having absorber layer grain sizes less than 10 μm and hence a very high density of grain boundaries. Recent research has shown that this is possible because of partial passivation of grain boundaries during the widely used cadmium chloride treatment, and passivation of grain interior defects by selenium alloying of the CdTe. Here, state-of-the art TEM-based cathodoluminescence imaging is used to show that, in addition to grain interiors, selenium also passivates grain boundaries in alloyed Cd(Sex,Te1-x) material (CST). Specifically, we find that recombination at CST grain boundaries is up to an order of magnitude lower than at CdTe grain boundaries. This further explains the superior performance of selenium graded CdTe devices and provides potential new routes for further efficiency improvement and solar electricity cost reduction. | en_US |
dc.description.sponsorship | The authors at Loughborough University are grateful to the EPSRC CDT in New and Sustainable Photovoltaics for providing T.F. with a studentship, RCUK for providing funding through the EPSRC SUPERGEN SuperSolar Hub (EP/J017361/1), and the Loughborough Materials Characterisation Centre for access to the Helios PFIB, funded by the EPSRC grant EP/P030599/1. The authors at Colorado State University acknowledge support from NSF AIR, NSF I/UCRC and DOE SIPS programmes. The work at Colorado State University was supported by NSF award 1540007, NSF PFI:AIR-RA programme 1538733 and DOE SIPS award DE-EE0008177. | en_US |
dc.format.extent | 1 - 7 | - |
dc.format.medium | Print-Electronic | - |
dc.language | English | - |
dc.language.iso | en_US | en_US |
dc.publisher | Elsevier | en_US |
dc.rights | Attribution -NonCommercial-NoDerivatives 4.0 International | - |
dc.rights.uri | https://creativecommons.org/licenses/by-nc-nd/4.0/ | - |
dc.subject | cadmium telluride | en_US |
dc.subject | grain boundaries | en_US |
dc.subject | selenium | en_US |
dc.subject | TEM | en_US |
dc.subject | cathodoluminescence | en_US |
dc.title | Selenium passivates grain boundaries in alloyed CdTe solar cells | en_US |
dc.type | Article | en_US |
dc.identifier.doi | https://doi.org/10.1016/j.solmat.2022.111595 | - |
dc.relation.isPartOf | Solar Energy Materials and Solar Cells | - |
pubs.publication-status | Published | - |
pubs.volume | 238 | - |
dc.identifier.eissn | 1879-3398 | - |
dc.rights.license | https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode.en | - |
dc.rights.holder | Elsevier B.V. | - |
Appears in Collections: | The Experimental Techniques Centre |
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