Radiative coupling effects in GaInP/GaAs/Ge multifunction solar cells

Hojun Yoon, Richard R. King, Geoffrey S. Kinsey, Sarah Kurtz, Dmitri D. Krut

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

31 Scopus citations

Abstract

Direct measurements of radiative coupling effects in GaInP/GaAs/Ge multijunction solar cells are presented. Radiative coupling between the GaInP and GaAs cells is observed by using isotype cells as well as specially fabricated 3-terminal device structures. Spectral response measurements of the GaAs cell in both isotype and 3-terminal approaches are shown to exhibit enhanced quantum efficiency in the short wavelength region under favorable radiative coupling conditions. Additionally, electroluminescence of the GaInP cell is shown to enhance the current output from the GaAs cell using a 3-terminal device structure. One consequence of this effect is the possible influence on the measured J-ratio of a multijunction cell. Consideration of radiative coupling may become increasingly important as multijunction III-V based solar cells - including 4- and 5-junction cells - continue to develop and improve in performance.

Original languageEnglish (US)
Title of host publicationProceddings of the 3rd World Conference on Photovoltaic Energy Conversion
EditorsK. Kurokawa, L.L. Kazmerski, B. McNeils, M. Yamaguchi, C. Wronski
Pages745-748
Number of pages4
StatePublished - Dec 1 2003
Externally publishedYes
EventProceddings of the 3rd World Conference on Photovoltaic Energy Conversion - Osaka, Japan
Duration: May 11 2003May 18 2003

Publication series

NameProceedings of the 3rd World Conference on Photovoltaic Energy Conversion
VolumeA

Other

OtherProceddings of the 3rd World Conference on Photovoltaic Energy Conversion
CountryJapan
CityOsaka
Period5/11/035/18/03

ASJC Scopus subject areas

  • Engineering(all)

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  • Cite this

    Yoon, H., King, R. R., Kinsey, G. S., Kurtz, S., & Krut, D. D. (2003). Radiative coupling effects in GaInP/GaAs/Ge multifunction solar cells. In K. Kurokawa, L. L. Kazmerski, B. McNeils, M. Yamaguchi, & C. Wronski (Eds.), Proceddings of the 3rd World Conference on Photovoltaic Energy Conversion (pp. 745-748). (Proceedings of the 3rd World Conference on Photovoltaic Energy Conversion; Vol. A).