Exploratory observations of random telegraphic signals and noise in homogeneous hydrogenated amorphous silicon

Abstract
Noise measurements on unhydrogenated and hydrogenated rf sputtered intrinsic amorphous silicon reported by D’Amico, Fortunato, and Van Vliet [Solid-State Electron. 28, 837 (1985)] have 1/f and Lorentzian spectra, respectively. Similar noise measurements on glow-discharge deposited hydrogenated amorphous intrinsic silicon reported by Bathaei and Anderson [Philos. Mag. B 55, 87 (1987)] gave a 1/f m spectrum with 0.7<m105 V/cm) as the current fluctuates chaotically and this is also the prebreakdown regime of the sample.