Upconverter materials and upconversion solar-cell devices: simulation and characterization with broad solar spectrum illumination

Fischer, S.; Fröhlich, B.; Ivaturi, A.; Herter, B.; Wolf, S.; Krämer, Karl; Richards, B. S.; Goldschmidt, J. C. (2014). Upconverter materials and upconversion solar-cell devices: simulation and characterization with broad solar spectrum illumination. In: Physics, Simulation, and Photonic Engineering of Photovoltaic Devices III. Proceedings of SPIE: Vol. 8981 (89810B). SPIE 10.1117/12.2039407

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Upconverter materials and upconverter solar devices were recently investigated with broad-band excitation revealing the great potential of upconversion to enhance the efficiency of solar cell at comparatively low solar concentration factors. In this work first attempts are made to simulate the behavior of the upconverter β-NaYF4 doped with Er3+ under broad-band excitation. An existing model was adapted to account for the lower absorption of broader excitation spectra. While the same trends as observed for the experiments were found in the simulation, the absolute values are fairly different. This makes an upconversion model that specifically considers the line shape function of the ground state absorption indispensable to achieve accurate simulations of upconverter materials and upconverter solar cell devices with broadband excitations, such as the solar radiation.

Item Type:

Conference or Workshop Item (Paper)

Division/Institute:

08 Faculty of Science > Departement of Chemistry and Biochemistry

UniBE Contributor:

Krämer, Karl

Subjects:

500 Science > 530 Physics
500 Science > 540 Chemistry

Series:

Proceedings of SPIE

Publisher:

SPIE

Language:

English

Submitter:

Karl Krämer

Date Deposited:

06 Nov 2014 15:56

Last Modified:

26 Jun 2016 01:55

Publisher DOI:

10.1117/12.2039407

BORIS DOI:

10.7892/boris.59682

URI:

https://boris.unibe.ch/id/eprint/59682

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