Morphological fluctuation and electrical properties of sputtered hydrogenated silicon

Abstract
Electrical properties and x-ray small angle scattering have been measured on rf-sputtered Si:H alloys deposited at various hydrogen partial pressures of argon and hydrogen mixture gas with a constant total pressure. When the hydrogen partial pressure exceeds 40%, microcrystalline zone of about 200 Å in diameter is formed and photoexcited carriers show nondispersive transport, instead of dispersive transport which is typical of rf-sputtered a-Si:H.