R. Martins et al., STRUCTURE, COMPOSITION AND ELECTROOPTICAL PROPERTIES OF N-TYPE AMORPHOUS AND MICROCRYSTALLINE SILICON THIN-FILMS, Philosophical magazine. B. Physics of condensed matter. Statistical mechanics, electronic, optical and magnetic, 76(3), 1997, pp. 249-258
This paper deals with the structure, composition and electro-optical c
haracteristics of n-type amorphous and microcrystalline silicon thin f
ilms produced by plasma-enhanced chemical vapour deposition in a hydro
gen-helium mixture. In addition, special emphasis is given to the role
that hydrogen incorporation plays in the film's properties and in the
characteristics of n-type microcrystalline films presenting simultane
ously optical gaps of about 2.3 eV (controlled by the hydrogen content
in the film), a dark conductivity of 6.5 S cm(-1) and a Hall mobility
of about 0.86 cm(2) V-1 s(-1), the highest combined values for n-type
microcrystalline silicon films, as far as we know.