Accession Number:

AD0650114

Title:

INTEGRAL COVERS FOR SOLAR CELLS,

Descriptive Note:

Corporate Author:

AIR FORCE AERO PROPULSION LAB WRIGHT-PATTERSON AFB OHIO

Report Date:

1967-03-30

Pagination or Media Count:

24.0

Abstract:

Present integral cover configurations in the 1 to 2 mil thickness range can operate satisfactorily in space for extended time periods. Panel weight reductions of 40 percent are possible for one-year operation in space with a dose equivalent to 10 to the 13th power electrons per square centimeter per day by the use of 4-mil integral covers on thin, drift-field solar cells. A thorough cost-effectiveness analysis of this approach has not been conducted to-date, however. Proper design of these coatings can improve the efficiency of the cells through optimum spectral match and thus eliminates the requirements for adhesives, cover-slip layers, and the associated interference coatings required to reduce ultraviolet-darkening effects on the adhesives. The integral covers exhibit about the same degradation rate as the fused-silica cover slips. These coatings also permit higher temperature operation of solar cells for handling and annealing purposes as well as near-sun mission applications. Author

Subject Categories:

  • Electric Power Production and Distribution
  • Coatings, Colorants and Finishes

Distribution Statement:

APPROVED FOR PUBLIC RELEASE