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Thin Film Transistors obtained by Hot-Wire CVD

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Hydrogenated microcrystalline silicon films obtained at low temperature (150-280°C) by hot wire chemical vapour deposition at two different process pressures were measured by Raman spectroscopy, X-ray diffraction (XRD) spectroscopy and photothermal deflection spectroscopy (PDS). A crystalline fraction >90% with a subgap optical absortion 10 cm -1 at 0.8 eV were obtained in films deposited at growth rates >0.8 nm/s. These films were incorporated in n-channel thin film transistors and their electrical properties were measured. The saturation mobility was 0.72 ± 0.05 cm 2/ V s and the threshold voltage around 0.2 eV. The dependence of their conductance activation energies on gate voltages were related to the properties of the material.

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PUIGDOLLERS I GONZÁLEZ, Joaquim, ORPELLA, Albert, DOSEV, D., VOZ SÁNCHEZ, Cristóbal, PALLARÉS CURTO, Jordi, MARSAL GARVÍ, Lluís f. (lluís francesc), BERTOMEU I BALAGUERÓ, Joan, ANDREU I BATALLÉ, Jordi, ALCUBILLA GONZÁLEZ, Ramón, PEIRÓ, D.. Thin Film Transistors obtained by Hot-Wire CVD. _Journal of non-Crystalline Solids_. 2000. Vol. 266-269, núm. 2, pàgs. 1304-1309. [consulta: 20 de gener de 2026]. ISSN: 0022-3093. [Disponible a: https://hdl.handle.net/2445/47417]

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