Phosphate coverglasses and hybrid adhesives - protective materials for short-wavelength-cut-on photovoltaics

This paper describes the development of two technologies intended to support the exploitation of shorter-wavelength light by photovoltaics-radiation-hard phosphate glasses with lower-wavelength cut-on values, and a radiation-resistant silicate-elastomer hybrid bonding agent (SEHB). Phosphate glasses with lower ultraviolet (UV) cut-on wavelength than current materials have been developed, but the cut-on wavelength shows a pronounced red shift after radiation exposure. The hybrid adhesive has shown improved UV resistance and thermal stability compared to existing space-rated silicone adhesives.