Luminescent downshifting silicon quantum dots for performance enhancement of polycrystalline silicon solar cells

Masaadeh, Qais ORCID: https://orcid.org/0000-0003-2916-9806, Kaplani, Eleni ORCID: https://orcid.org/0000-0002-4987-4388 and Chao, Yimin ORCID: https://orcid.org/0000-0002-8488-2690 (2022) Luminescent downshifting silicon quantum dots for performance enhancement of polycrystalline silicon solar cells. Electronics, 11 (15). ISSN 2079-9292

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Abstract

Silicon quantum dots (Si-QDs) with luminescent downshifting properties have been used for the efficiency enhancement of solar cells. In this study, Phenylacetylene-capped silicon quantum dots (PA Si-QDs) have been fabricated and applied as luminescent downshifting material on polycrystalline silicon solar cells, by dropcasting. The PA Si-QD coated solar cell samples presented an average increase in the short circuit current (Isc) of 0.75% and 1.06% for depositions of 0.15 mg and 0.01 mg on 39 mm × 39 mm pc-Si solar cells, respectively. The increase was further enhanced by full encapsulation of the sample leading to overall improved performance of about 3.4% in terms of Isc and 4.1% in terms of power output (Pm) when compared to the performance of fully encapsulated reference samples. The PA Si-QD coating achieved a reduction in specular reflectance at 377 nm of 61.8%, and in diffuse reflectance of 44.4%. The increase observed in the Isc and Pm is a promising indicator for the use of PA Si-QDs as luminescent downshifting material to improve the power conversion efficiency of pc-Si solar cells.

Item Type:	Article
Additional Information:	Data Availability Statement: The data presented in this study are available on request. Acknowledgments: This project is part of PhD work of Q.M. funded by the Science Faculty of the University of East Anglia which is much appreciated.
Uncontrolled Keywords:	luminescent downshifting,pc-si solar cells,phenylacetylene,silicon quantum dots
Faculty \ School:	Faculty of Science > School of Engineering (former - to 2024) Faculty of Science > School of Chemistry (former - to 2024)
UEA Research Groups:	Faculty of Science > Research Groups > Sustainable Energy
Depositing User:	LivePure Connector
Date Deposited:	04 Aug 2022 14:30
Last Modified:	07 Nov 2024 12:45
URI:	https://ueaeprints.uea.ac.uk/id/eprint/87081
DOI:	10.3390/electronics11152433

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