The reduction of the In2O3 caused by the deposition of μc-Si:C:H by means of plasma-enhanced CVD, is considerably diminished if a thin (50 Å) silicon monoxide layer is applied as a diffusion barrier. The amount of reduced indium diminishes by a factor three while the amount of silicon oxide is also less, although SiO was added on purpose. First results on an amorphous silicon In2O3/pi junction show that the SiO layer benefits the opto-electrical characteristics. © 1991.
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