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Materials 2017, 10(1), 21; doi:10.3390/ma10010021

Photovoltaic Performance Characterization of Textured Silicon Solar Cells Using Luminescent Down-Shifting Eu-Doped Phosphor Particles of Various Dimensions

Department of Electro-Optical Engineering, National Taipei University of Technology, No. 1, Section 3, Zhongxial East Road, Taipei 10608, Taiwan
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Author to whom correspondence should be addressed.
Academic Editors: Mady Elbahri, Shain Homaeigohar and Mehdi Keshavarz Hedayati
Received: 30 November 2016 / Revised: 20 December 2016 / Accepted: 26 December 2016 / Published: 1 January 2017
(This article belongs to the Special Issue Green Nanotechnology)
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Abstract

This paper reports on efforts to enhance the photovoltaic performance of textured silicon solar cells through the application of a layer of Eu-doped silicate phosphor with particles of various dimensions using the spin-on film technique. We examined the surface profile and dimensions of the Eu-doped phosphors in the silicate layer using optical microscopy with J-image software. Optical reflectance, photoluminescence, and external quantum efficiency were used to characterize the luminescent downshifting (LDS) and light scattering of the Eu-doped silicate phosphor layer. Current density-voltage curves under AM 1.5G simulation were used to confirm the contribution of LDS and light scattering produced by phosphor particles of various dimensions. Experiment results reveal that smaller phosphor particles have a more pronounced effect on LDS and a slight shading of incident light. The application of small Eu-doped phosphor particles increased the conversion efficiency by 9.2% (from 12.56% to 13.86%), far exceeding the 5.6% improvement (from 12.54% to 13.32%) achieved by applying a 250 nm layer of SiO2 and the 4.5% improvement (from 12.37% to 12.98%) observed in cells with large Eu-doped phosphor particles. View Full-Text
Keywords: Eu-doped phosphor; luminescent downshifting (LDS); textured silicon solar cells Eu-doped phosphor; luminescent downshifting (LDS); textured silicon solar cells
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Ho, W.-J.; Deng, Y.-J.; Liu, J.-J.; Feng, S.-K.; Lin, J.-C. Photovoltaic Performance Characterization of Textured Silicon Solar Cells Using Luminescent Down-Shifting Eu-Doped Phosphor Particles of Various Dimensions. Materials 2017, 10, 21.

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