Accession Number : AD0650114

Title :   INTEGRAL COVERS FOR SOLAR CELLS,

Corporate Author : AIR FORCE AERO PROPULSION LAB WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Wise,J. F. ; McClelland,J. A. ; Statler,R. L.

Report Date : 30 MAR 1967

Pagination or Media Count : 24

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)

Descriptors :   (*SOLAR CELLS, COATINGS), PERFORMANCE(ENGINEERING), GLASS, QUARTZ, SPACE ENVIRONMENTS, DAMAGE, RADIATION EFFECTS, CERAMIC COATINGS

Subject Categories : Electric Power Production and Distribution
      Coatings, Colorants and Finishes

Distribution Statement : APPROVED FOR PUBLIC RELEASE