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Open AccessArticle

Enhancing Photovoltaic Performance Using Broadband Luminescent Down-Shifting by Combining Multiple Species of Eu-Doped Silicate Phosphors

1
Department of Electro-Optical Engineering, National Taipei University of Technology, Taipei 10608, Taiwan
2
Realtek Semiconductor Corporation, No. 2, Innovation Road II, Hsinchu Science Park, Hsinchu 30076, Taiwan
*
Author to whom correspondence should be addressed.
Nanomaterials 2017, 7(10), 340; https://doi.org/10.3390/nano7100340
Received: 23 September 2017 / Revised: 16 October 2017 / Accepted: 18 October 2017 / Published: 21 October 2017
(This article belongs to the Special Issue Nanomaterials for Renewable and Sustainable Energy)
This paper demonstrates the application of a broadband luminescent downshifting (LDS) layer with multiple species of europium (Eu)-doped silicate phosphors using spin-on film technique to enhance the photovoltaic efficiency of crystalline silicon solar cells. The surface morphology of the deposited layer was examined using a scanning electron microscope (SEM). The chemical composition of the Eu-doped silicate phosphors was analyzed using energy-dispersive X-ray spectroscopy (EDS). The fluorescence emission of the Eu-doped silicate phosphors was characterized using photoluminescence (PL) measurements at room temperature. We also compared the optical reflectance and external quantum efficiency (EQE) response of cells with combinations of various Eu-doped phosphors species. The cell coated with two species of Eu-doped phosphors achieved a conversion efficiency enhancement (∆η) of 19.39%, far exceeding the ∆η = 15.08% of the cell with one species of Eu-doped phosphors and the ∆η = 8.51% of the reference cell with the same silicate layer without Eu-doped phosphors. View Full-Text
Keywords: Eu-doped silicate phosphors; luminescent downshifting (LDS); spin-on film technique; silicon solar cell Eu-doped silicate phosphors; luminescent downshifting (LDS); spin-on film technique; silicon solar cell
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MDPI and ACS Style

Ho, W.-J.; Shen, Y.-T.; Liu, J.-J.; You, B.-J.; Ho, C.-H. Enhancing Photovoltaic Performance Using Broadband Luminescent Down-Shifting by Combining Multiple Species of Eu-Doped Silicate Phosphors. Nanomaterials 2017, 7, 340.

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