Group-IV subcells in multijunction concentrator solar cells

Richard R. King, Chris Fetzer, Philip Chiu, Eric Rehder, Ken Edmondson, Nasser Karam

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

5 Scopus citations

Abstract

Group-IV solar cells have great value for increasing conversion efficiency when integrated with III-V subcells in multijunction solar cells, as in today's 3-junction GaInP/ GaInAs/ Ge concentrator cells that have demonstrated over 40% efficiency. New types of Ge, Si, SiGe, and SiGeSn subcells show the potential to increase multijunction efficiencies to still higher values. Cells incorporating both dilute nitride GaInNAs and active Ge substrate cells can reach over 46% production average efficiencies at 50.0 W/cm2 (500 suns), 25°C under the standard concentrated solar spectrum, with champion efficiencies over 48%.

Original languageEnglish (US)
Title of host publicationSiGe, Ge, and Related Compounds 5
Subtitle of host publicationMaterials, Processing, and Devices
Pages287-295
Number of pages9
Edition9
DOIs
StatePublished - Dec 1 2012
Externally publishedYes
Event5th SiGe, Ge, and Related Compounds: Materials, Processing and Devices Symposium - 220th ECS Meeting - Honolulu, HI, United States
Duration: Oct 7 2012Oct 12 2012

Publication series

NameECS Transactions
Number9
Volume50
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Other

Other5th SiGe, Ge, and Related Compounds: Materials, Processing and Devices Symposium - 220th ECS Meeting
CountryUnited States
CityHonolulu, HI
Period10/7/1210/12/12

ASJC Scopus subject areas

  • Engineering(all)

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  • Cite this

    King, R. R., Fetzer, C., Chiu, P., Rehder, E., Edmondson, K., & Karam, N. (2012). Group-IV subcells in multijunction concentrator solar cells. In SiGe, Ge, and Related Compounds 5: Materials, Processing, and Devices (9 ed., pp. 287-295). (ECS Transactions; Vol. 50, No. 9). https://doi.org/10.1149/05009.0287ecst