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Downshifting and antireflective thin films for solar module power enhancement

Title
Downshifting and antireflective thin films for solar module power enhancement
Authors
He, YujuanLiu, JieSung, Shi-JoonChang, Chih-hung
DGIST Authors
He, Yujuan; Liu, Jie; Sung, Shi-Joon; Chang, Chih-hung
Issue Date
2021-03
Citation
Materials and Design, 201, 109454
Type
Article
Author Keywords
DownshiftingAntireflectionGraded multifunctional thin filmFinite difference time domain (FDTD)Si solar cell
Keywords
Solar conversion efficienciesYttrium orthovanadateThin filmsComposite filmsConversion efficiencyGlassGlass industryPhotonsRefractive indexSilicaSilica nanoparticlesSolar cell arraysThin film solar cellsComposite thin filmsHollow silica nanoparticlesManufacturing processMulticrystalline SiMultifunctional thin-filmsPower enhancement
ISSN
0264-1275
Abstract
Efforts to enhance the solar conversion efficiency have prevailed for decades. There is a growing interest in improving the spectral response of solar modules, especially in harvesting UV photons, which offer intense energy in a narrow wavelength range. To harvest UV photons and reduce reflection without interfering with the formulas and manufacturing process of solar cells, in this work, thin films that possess downshifting and antireflection capabilities were fabricated on the cover glass of multicrystalline Si solar cells. The thin films were composed of graded index layers of europium-doped yttrium orthovanadate (YVO4:Eu) and hollow silica nanoparticles (HSNPs). The design of the composite thin films was assisted by the FDTD mathematical model that simulated the refractive index and thickness of each layer to obtain the optimum transmittance. The cover glass with multifunctional thin films harvested more than 30% of UV photons and enhanced the solar conversion efficiency by 4.12% at normal incidence compared to the uncoated cover glass. © 2021 The Authors
URI
http://hdl.handle.net/20.500.11750/13483
DOI
10.1016/j.matdes.2021.109454
Publisher
Elsevier BV
Related Researcher
  • Author Sung, Shi-Joon  
  • Research Interests Compound Semiconductor Materials & Processes
Files:
Collection:
Division of Energy Technology1. Journal Articles


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