skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Status and Issues in High Efficiency III-V Solar Cells

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy Solar Energy Program
OSTI Identifier:
1121500
DOE Contract Number:
AC36-08GO28308
Resource Type:
Conference
Resource Relation:
Conference: Proceedings of the PVSEC 17 Conference, 3-7 December 2007, Fukuoka, Japan; Related Information: Paper No. 6O-B9-01
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 42 ENGINEERING; Solar Energy - Photovoltaics

Citation Formats

Kurtz, S., Geisz, J., McMahon, W., Wanlass, M., Jones, K., Reedy, R., Ward, S., Duda, A., Olson, J., Friedman, D., Kibbler, A., Ptak, A., Moriarity, T., Kiehl, J., and Emery, K. Status and Issues in High Efficiency III-V Solar Cells. United States: N. p., 2007. Web.
Kurtz, S., Geisz, J., McMahon, W., Wanlass, M., Jones, K., Reedy, R., Ward, S., Duda, A., Olson, J., Friedman, D., Kibbler, A., Ptak, A., Moriarity, T., Kiehl, J., & Emery, K. Status and Issues in High Efficiency III-V Solar Cells. United States.
Kurtz, S., Geisz, J., McMahon, W., Wanlass, M., Jones, K., Reedy, R., Ward, S., Duda, A., Olson, J., Friedman, D., Kibbler, A., Ptak, A., Moriarity, T., Kiehl, J., and Emery, K. Mon . "Status and Issues in High Efficiency III-V Solar Cells". United States. doi:.
@article{osti_1121500,
title = {Status and Issues in High Efficiency III-V Solar Cells},
author = {Kurtz, S. and Geisz, J. and McMahon, W. and Wanlass, M. and Jones, K. and Reedy, R. and Ward, S. and Duda, A. and Olson, J. and Friedman, D. and Kibbler, A. and Ptak, A. and Moriarity, T. and Kiehl, J. and Emery, K.},
abstractNote = {},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 2007},
month = {Mon Jan 01 00:00:00 EST 2007}
}

Conference:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

Save / Share:
  • Solar cells fabricated from various III-V compounds have recently produced very high laboratory conversion efficiencies approaching 29% for single junction and 35% for multijunction structures under concentrated illumination. However, due to their relatively limited availability, few of these devices have been incorporated into actual concentrator module structures. Details are presented from two development efforts which have incorporated III-V cells into high efficiency prototype concentrator modules: (1) Varian's GaAs module operating at 1000 suns with flat fresnel lenses; and (2) Boeing's tandem GaAs/GaSb module operating at 50 suns with Entech's domed fresnel lenses.
  • Red Teaming is an advanced form of assessment that can be used to identify weaknesses in a variety of cyber systems. it is especially beneficial when the target system is still in development when designers can readily affect improvements. This paper discusses the red team analysis process and the author's experiences applying this process to five selected Information Technology Office (ITO) projects. Some detail of the overall methodology, summary results from the five projects, and lessons learned are contained within this paper.
  • We have developed Si-based tandem solar cells with a certified 1-sun efficiency of 29.8% (AM1.5g). The four-terminal tandem devices consist of 1.8 eV rear-heterojunction GaInP top cells and silicon heterojunction bottom cells. The two subcells were fabricated independently in two different labs and merged using an optically transparent, electrically insulating epoxy. Work is ongoing to further improve the performance of each subcell and to push the tandem cell efficiency to > 30%.
  • The role of the back reflector texture on the initial and stabilized efficiency of high efficiency triple-junction triple-bandgap amorphous silicon alloy based cells has been investigated. The devices have been deposited on Ag/ZnO back reflector possessing three different textures. The performance of the bottom single-junction a-SiGe alloy n i p cell on the three textures has also been analyzed. The value of the short-circuit current density of the n i p cell initially increases and then decreases with increasing texture. Light soaking results show that the higher textures exhibit superior device stability. Degradation as low as 8% has been obtainedmore » on the triple-junction cells.« less