Abstract
Hydrogenated amorphous silicon carbide (a-SiCx:H) films were prepared by glow discharge technique with gas mixture of silane (SiH4) and methane (CH4). The room-temperature optical bistability was demonstrated in uncoated a-SiCx:H films at the excitation wavelength about 532 nm. The switch-on intensity of device is about 0.8 MW/cm2 and the switching time is in the nanosecond scale. The physical origin of the optical nonlinearity in these materials is also discussed.
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