514
20 Transparent Conductive Oxide Semiconductors
Fig. 20.5 Hall mobility for various ZnO:Al TCO thin films as a function of carrier (electron) concentration. The dashed
line is the Brooks–Hering theory of ionized impurity scattering (taking into account non-parabolicity of the conduction
band). The dash-dotted line is mobility in the presence of grain boundaries, the solid line is combined theory. Symbols
are experimental data from two sets of samples. Adapted from [1665]
Fig. 20.6 Hall mobility of ZnO:Al films (of varying thickness) versus the crystallite size. Experimental data (from
[1665]) are shown as symbols. The dashed line is a guide to the eye
(a)
(b)
Fig. 20.7 a Absorption coefficient of n-type ZnO for various electron concentrations as labeled. Spectra synthesized
from ellipsometric data of thin films. The visible spectral range is indicated. The contributing absorption processes are
band-band transitions (BB), free carrier absorption (FC) and phonon-related absorption (Ph) as labeled. b Transparency
versus wavelength spectra of two SnO 2 films with different conductivity as labeled. Adapted from [1676]
20 Transparent Conductive Oxide Semiconductors
Fig. 20.5 Hall mobility for various ZnO:Al TCO thin films as a function of carrier (electron) concentration. The dashed
line is the Brooks–Hering theory of ionized impurity scattering (taking into account non-parabolicity of the conduction
band). The dash-dotted line is mobility in the presence of grain boundaries, the solid line is combined theory. Symbols
are experimental data from two sets of samples. Adapted from [1665]
Fig. 20.6 Hall mobility of ZnO:Al films (of varying thickness) versus the crystallite size. Experimental data (from
[1665]) are shown as symbols. The dashed line is a guide to the eye
(a)
(b)
Fig. 20.7 a Absorption coefficient of n-type ZnO for various electron concentrations as labeled. Spectra synthesized
from ellipsometric data of thin films. The visible spectral range is indicated. The contributing absorption processes are
band-band transitions (BB), free carrier absorption (FC) and phonon-related absorption (Ph) as labeled. b Transparency
versus wavelength spectra of two SnO 2 films with different conductivity as labeled. Adapted from [1676]