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Proceedings Paper

Enhanced up-converted fluorescence in fluorozirconate based glass ceramics for high efficiency solar cells
Author(s): Bernd Ahrens; Bastian Henke; Paul T. Miclea; Jacqueline A. Johnson; Stefan Schweizer
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Paper Abstract

Thermal processing of as-made fluorozirconate glasses which were additionally doped with neodymium and chlorine ions leads to enhanced up-conversion fluorescence intensities in these glass ceramics. The samples were annealed between 240°C and 290°C while the optimum value was found for the 270°C sample. We investigated the power dependence of the infrared fluorescence, the 2-photon up-conversion, and the 3-photon up-conversion fluorescence intensities as well as the corresponding radiative lifetimes. In analogy to the up-conversion intensity, the radiative lifetime of the Nd3+ fluorescence at about 880 nm depends significantly on the annealing temperature: the longest lifetime was observed for the 270°C sample.

Paper Details

Date Published: 5 May 2008
PDF: 7 pages
Proc. SPIE 7002, Photonics for Solar Energy Systems II, 700206 (5 May 2008); doi: 10.1117/12.779271
Show Author Affiliations
Bernd Ahrens, Univ. of Paderborn (Germany)
Bastian Henke, Fraunhofer Ctr. for Silicon Photovoltaics (Germany)
Paul T. Miclea, Fraunhofer Ctr. for Silicon Photovoltaics (Germany)
Martin-Luther-Univ. of Halle-Wittenberg (Germany)
Jacqueline A. Johnson, Univ. of Tennessee Space Institute (United States)
Stefan Schweizer, Fraunhofer Ctr. for Silicon Photovoltaics (Germany)
Martin-Luther-Univ. of Halle-Wittenberg (Germany)


Published in SPIE Proceedings Vol. 7002:
Photonics for Solar Energy Systems II
Andreas Gombert, Editor(s)

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