An optimized teflon bonding process for solar cell assemblies using Pilkington CMZ and CMG coverglasses

Attempts at teflon bonding have always failed due to the mismatch of thermal coefficients of expansion. With the advent of the Pilkington CMZ and CMG coverglasses where the coefficients have been exactly matched to the solar cell material, the bonding process has been developed so that the advantages and disadvantages of teflon bonding may be evaluated for use in the space environment. One important advantage is that teflon lends itself to the incorporation of a device which limits the build up of electrical potential so that damaging electrostatic discharges do not take place. Concepts for ESD protection are given with the results of the preliminary performance and environmental tests