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

Masaadeh, Qais ORCID:, Kaplani, Eleni ORCID: and Chao, Yimin ORCID: (2022) Luminescent downshifting silicon quantum dots for performance enhancement of polycrystalline silicon solar cells. Electronics, 11 (15). ISSN 2079-9292

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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
Faculty of Science > School of Chemistry
Depositing User: LivePure Connector
Date Deposited: 04 Aug 2022 14:30
Last Modified: 24 Oct 2022 07:32
DOI: 10.3390/electronics11152433


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