Monte-Carlo Ballistic Deposition simulations have done on substrates with different initial roughness. The grown films were observed to be porous. The initial growths of the films with seed like initiations are observed for substrate with high initial roughness. In order to confirm this effect TiO2 films were deposited on different substrates using chemical bath deposition. The surface morphological and optical properties were measured using scanning electron microscopy and a UV-Vis spectrophotometer. Flower like porous structure are obtained on glass substrate and continuous porous morphology is formed on ITO substrate. The morphology of the surfaces was successfully reconstructed and the surface porosity was calculated after digitalising images and reconstructed the surfaces. The TiO2 film formed on ITO is observed to be 10% more porous than on the film formed on glass substrate. Diffusion Limited Aggregation simulations with multiple seeds confirms that the observed flower like structure formed are due to the screening effects of the diffusing ion by already deposited particles.

1.
A.
Trugler
,
J. C.
Tinguely
,
G.
Jakopic
,
U.
Hohenster
,
J. R.
Krenn
, and
A.
Hohenan
,
Phys. Rev. B
89
(
2011
),
165409
.
2.
J. S.
Langer
,
Rev. Mod. Phy.
52
(
1980
),
1
.
3.
D.
Kum
and
D.
Byun
,
Journal of Electronic Materials
26
(
1997
),
1098
.
4.
A. L.
Barabasi
and
H. E.
Stanley
,
Fractal Concepts in Surface Growth
(
Cambridge University Press
,
1995
).
5.
P.
Meakin
,
Fractals
,
Scaling, and Growth Far from Equilibrium
. (
Cambridge University Press
,
2008
).
6.
B.
Liu
and
E. S.
Aydil
,
Chem. Commun.
47
(
2011
),
9507
.
This content is only available via PDF.
You do not currently have access to this content.