"Full-, half-, and quarter-size CdS thin-film solar cells were subjected to a simulated space environment to test the effect of cell size on performance degradation. The test data indicate that there is more variation in degradation among common size cells than between different size cells and that cell degradation does not appear to be substantially affected by cell size." -- Title page.

Thermal-shock cycling of Kapton, copper, and molybdenum substrate thin-film cadmium sulfide solar cells was conducted by alternately heating the cells between two heater plates and dipping them into liquid nitrogen.