Lightweight, flexible, high-efficiency III-V multijunction cells

Daniel C. Law, K. M. Edmondson, N. Siddiqi, A. Paredes, R. R. King, G. Glenn, E. Labios, M. H. Haddad, T. D. Isshiki, N. H. Karam

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

19 Scopus citations

Abstract

Large-area (26.6 cm2), thin GaInP/GaInAs/Ge triple-junction (TJ) solar cells with thickness as low as 50 μm were demonstrated. The average conversion efficiency of fifty thin TJ cells is 28 %, 1-sun AMO. The thin TJ cells showed nominal performance after welding of interconnects and flexibility test (50 mm curvature radius). Prototype coupons made with these thin TJ cells met flexible solar module bending requirement of 100 mm radius. The thin-cell coupons showed a specific power of 500 W/kg and a power density of 325 W/m 2. Ultra-thin (<10 μm thick) GaInP/Ga(In)As dual-junction (DJ) cells with size ranges from 0.5 to 26.6 cm2 were fabricated using 4" Ge or GaAs wafers. Preliminary test data of the ultra-thin DJ cells showed a specific power of 2067 W/kg and a power density of 283 W/m2. The ultra-thin solar cells continued to demonstrate nominal performance after handling and flexing to a radius of 12 mm. Our results suggested that both the thin cell and the ultra-thin cell technologies can be incorporated with current and future solar cell designs

Original languageEnglish (US)
Title of host publicationConference Record of the 2006 IEEE 4th World Conference on Photovoltaic Energy Conversion, WCPEC-4
PublisherIEEE Computer Society
Pages1879-1882
Number of pages4
ISBN (Print)1424400163, 9781424400164
DOIs
StatePublished - Jan 1 2006
Externally publishedYes
Event2006 IEEE 4th World Conference on Photovoltaic Energy Conversion, WCPEC-4 - Waikoloa, HI, United States
Duration: May 7 2006May 12 2006

Publication series

NameConference Record of the 2006 IEEE 4th World Conference on Photovoltaic Energy Conversion, WCPEC-4
Volume2

Other

Other2006 IEEE 4th World Conference on Photovoltaic Energy Conversion, WCPEC-4
CountryUnited States
CityWaikoloa, HI
Period5/7/065/12/06

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry

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    Law, D. C., Edmondson, K. M., Siddiqi, N., Paredes, A., King, R. R., Glenn, G., Labios, E., Haddad, M. H., Isshiki, T. D., & Karam, N. H. (2006). Lightweight, flexible, high-efficiency III-V multijunction cells. In Conference Record of the 2006 IEEE 4th World Conference on Photovoltaic Energy Conversion, WCPEC-4 (pp. 1879-1882). [4060028] (Conference Record of the 2006 IEEE 4th World Conference on Photovoltaic Energy Conversion, WCPEC-4; Vol. 2). IEEE Computer Society. https://doi.org/10.1109/WCPEC.2006.279862