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

Masaadeh, Qais, Kaplani, Eleni and Chao, Yimin (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:	12 Feb 2025 01:21
URI:	https://ueaeprints.uea.ac.uk/id/eprint/87081
DOI:	10.3390/electronics11152433

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