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Amorphous silicon films with high deposition rate prepared using argon and hydrogen diluted silane for stable solar cells

Hydrogenated amorphous silicon films with high deposition rate (4–5 Å/s) and reduced Staebler–Wronski effect are prepared using a mixture of silane (SiH 4), hydrogen and argon. The films show an improvement in short and medium range order. The structural, transport and stability studies on the films...

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Published in:Solar energy materials and solar cells 2007-08, Vol.91 (13), p.1253-1257
Main Authors: Gogoi, Purabi, Dixit, P.N., Agarwal, Pratima
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description Hydrogenated amorphous silicon films with high deposition rate (4–5 Å/s) and reduced Staebler–Wronski effect are prepared using a mixture of silane (SiH 4), hydrogen and argon. The films show an improvement in short and medium range order. The structural, transport and stability studies on the films are done using X-ray diffraction (XRD), scanning electron microscopy (SEM), Raman scattering studies, electrical conductivity and diffusion length measurement. Presence of both atomic hydrogen and Ar * in the plasma causes breaking of weak Si Si bonds and subsequent reconstruction of strong bonds resulting in improvement of short and medium range order. The improved structural order enhances the stability of these films against light soaking. High deposition rate is due to the lesser etching of growing surface compared to the case of only hydrogen diluted silane.
doi_str_mv 10.1016/j.solmat.2007.03.004
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1879-3398
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source ScienceDirect Journals
subjects Amorphous silicon
Applied sciences
Argon dilution
Deposition rate
Energy
Exact sciences and technology
Natural energy
Photovoltaic conversion
Solar cells. Photoelectrochemical cells
Solar energy
Stability
Staebler–Wronski effect
title Amorphous silicon films with high deposition rate prepared using argon and hydrogen diluted silane for stable solar cells
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