Investigation of Phosphorescent Materials for Photovoltaic Device Applications
Citation:
OLIVEIRA, MOACIR GOMES DE, Investigation of Phosphorescent Materials for Photovoltaic Device Applications, Trinity College Dublin.School of Engineering, 2019Download Item:
PhD Thesis Moacir Gomes de Oliveira(1).pdf (PDF) 11.44Mb
Abstract:
Phosphorescence is used in photovoltaic devices by embedding phosphorescence species
within a transparent host polymer to absorb ultraviolet solar radiation followed by a slow
emission of visible light. Phosphorescent material has come to the fore in luminescent
applications as well light emitting and harvesting applications. Utilising long persistent
phosphorescent energy converters in PV devices is just one avenue for improving the efficiency of the PV device under light and dark conditions. Combining these technologies in a passive approach can enhance the photovoltaic efficiency and effective energy transfer. The energy transfer from long persistent phosphors to the photovoltaic device has been investigated both to increase the fundamental understanding of the mechanisms and also with a view towards viable device applications.
Concentration dependence of the spectroscopy and photoluminescence spectra of
luminescent layers as well as quantum efficiency and photoluminescence decay has been
investigated across the range of ultraviolet to visible light. It shows that a highly concentrated phosphorescent layer on top of the photovoltaic device is unable to satisfactorily enhance the photovoltaic efficiency under illumination. However, under dark conditions the efficiency can be significantly improved. During photoluminescence, the energy transfer from the luminescent layer is shown to increase the PV device power output and to also power a LED light for more than 5 minutes.
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Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES)
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APPROVED
Author: OLIVEIRA, MOACIR GOMES DE
Advisor:
McCormack, SarahPublisher:
Trinity College Dublin. School of Engineering. Disc of Civil Structural & Environmental EngType of material:
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Full text availableKeywords:
Phosphorescent, Phosphorescence, After-Glow, Glow in the dark, Energy converter, Down Converter, Down conversion, Up conversion, Down Shifting, Luminescent, Luminescence, Battery, Polymer, Polysiloxanes, Solar panel, Renewable Energy, Energy storage, Solar power, Solar cell, Photovoltaic (PV), PhosphorsLicences: