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  4. Progress on up- and down-converted fluorescence in rare-doped fluorozirconate-based glass ceramics for high efficiency solar cells
 
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2010
Conference Paper
Title

Progress on up- and down-converted fluorescence in rare-doped fluorozirconate-based glass ceramics for high efficiency solar cells

Abstract
Transparent glasses as up- or down-converters are attractive systems to increase the efficiency of solar cells. Er-doped fluorozirconate (FZ) glasses show an intense up-conversion upon excitation at 1540 nm. Transmission spectra show that the absorbance at 1540 nm grows linearly with the Er-doping level. In Eu-doped FZ glasses, which were additionally doped with chlorine ions, the growth of BaCl2 nanocrystals can be observed upon thermal annealing. For high annealing temperatures a phase change from hexagonal to orthorhombic phase BaCl2 can be seen. Upon excitation in the ultraviolet (UV) spectral range these glass ceramics emit an intense blue emission. A combination of a silicon solar cell and an Eu-doped FZ glass ceramic as a down-converting top layer shows an increase in the short circuit current in the UV spectral range compared to a solar cell without a down-converting top layer.
Author(s)
Schweizer, S.
Henke, B.
Ahrens, B.
Paßlick, C.
Miclea, P.T.
Wenzel, J.
Reisacher, E.
Pfeiffer, W.
Johnson, J.A.
Mainwork
Photonics for Solar Energy Systems III  
Conference
Conference "Photonics for Solar Energy Systems" 2010  
File(s)
Download (3.93 MB)
Rights
Use according to copyright law
DOI
10.24406/publica-r-369235
10.1117/12.853943
Language
English
CSP
Fraunhofer-Institut für Werkstoffmechanik IWM  
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