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

S. Fischer, B. Fröhlich, A. Ivaturi, B. Herter, S. Wolf, K. W. Krämer, B. S. Richards, J. C. Goldschmidt

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

1 Citation (Scopus)

Abstract

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.

Original languageEnglish
Title of host publicationPhysics, Simulation, and Photonic Engineering of Photovoltaic Devices III
Place of PublicationBellingham, WA
Number of pages7
DOIs
Publication statusPublished - 7 Mar 2014
EventPhysics, Simulation, and Photonic Engineering of Photovoltaic Devices III - San Francisco, CA, United States
Duration: 3 Feb 20146 Feb 2014

Publication series

NameProceedings of SPIE
PublisherSPIE
Volume8981

Conference

ConferencePhysics, Simulation, and Photonic Engineering of Photovoltaic Devices III
CountryUnited States
CitySan Francisco, CA
Period3/02/146/02/14

Keywords

  • broad-band excitation
  • quantum yield
  • rate equation simulations
  • silicon Solar Cells
  • third generation pv
  • upconversion
  • upconversion modeling

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