CuInSe2 (CIS) thin films were
deposited on soda lime glass substrates through processes in one,
two and three stages. The effect of the preparation conditions on
the electric properties of the CIS films was investigated by means
of resistivity and Hall coefficient measurements as a func-tion
of temperature. The study revealed that the samples grown in one
and two stage processes present an increment of the resistivity
with the temperature. This unexpected behavior seems to be associated
to phase changes induced by post fabrication heating; on the contrary,
the sam-ples grown in three stages presents a stable phase which
is not affected by posts deposition an-nealing. On the other hand,
it was found that the grain boundaries significantly affect the
elec-tric transport and therefore the electric conductivity of the
CIS thin films. |