Over 35% Efficient GaAs/GaSb Stacked Concentrator Cell Assemblies for Terrestrial Applications

L. M. Fraas, J. E. Avery, V. S. Sundaram, V. T. Dinh, T. M. Davenport, J. W. Yerkes, J. M. Gee, K. A. Emery

Research output: Contribution to conferencePaperpeer-review

89 Scopus Citations

Abstract

It has been previously noted that GaSb infrared-sensitive cells can be stacked behind transparent GaAs cells to boost solar cell energy conversion efficiencies to well over 30% for space and terrestrial applications. Verified spectral response and current versus voltage data for both GaAs and GaSb cells along with Sandia National Laboratories clear-day solar spectral data for Albuquerque, US, are used to calculate the stack performance for various spring, summer, fall, and winter days in Albuquerque at both 25°C and at projected cell normal operating temperatures (NOT). It is found that the stack annual average energy conversion efficiency is 35.6% at 25°C and 32.5% at NOT. During the year, the tandem stack efficiency at 25°C varies by a small amount, from a low of 35.3% to a high of 35.8%.

Original languageAmerican English
Pages190-195
Number of pages6
StatePublished - May 1990
Externally publishedYes
EventTwenty First IEEE Photovoltaic Specialists Conference - 1990 Part 2 (of 2) - Kissimimee, FL, USA
Duration: 21 May 199025 May 1990

Conference

ConferenceTwenty First IEEE Photovoltaic Specialists Conference - 1990 Part 2 (of 2)
CityKissimimee, FL, USA
Period21/05/9025/05/90

Bibliographical note

Work performed by Boeing High Technology Center, Seattle, Washington; Sandia National Laboratories, Albuquerque, New Mexico; and Solar Energy Research Institute, Golden, Colorado

NREL Publication Number

  • ACNR/CP-213-12255

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