The present study report on the growth of Mo-doped ZnO (MZO)
films by chemical spray process and the results on film characterization. Using
the spray pyrolysis method, molybdenum (Mo)-doped zinc oxide (ZnO) thin films
were produced on corning 7059 glass substrates. The layers were deposited with
the Mo-doping constant set at 2 at. % for a range of solution concentrations
from 0.01M to 0.2M. The change in
properties of the films by varying Zn molarity was studied. X-ray diffraction
studies showed polycrystalline nature of the films with (002) preferred orientation
and exhibited wurtzite structure. The layers formed at 0.1M molar concentration
exhibited better crystallinity compared to other layers. Raman studies are in
good agreement with XRD. Surface morphology varied significantly with Zn-molar
concentration. An average transmittance of the layers was 80% in the visible
region and the band gap varied from 3.31 eV to 3.5 eV. The detailed analysis of
the results including photoluminescence are reported and discussed. The optical
results identified that films with 0.1M concentration showed optical
transmittance of 80% in the visible region and the energy band gap varied
between 3.31eV to 3.5eV. The photoluminescence data supported the change in
band gap with solution concentration. These crystalline, single phase and
transmissive Mo-doped ZnO layers could be used as window layers in solar cells.
Author(s) Details
T. Sreenivasulu Reddy
Department of Physics, Viswam Engineering College,
Madanapalle – 517325, India.
N. Revathi
Department of Physics, Dayananda Sagar Academy of Technology
& Managment, Banglore – 560082, India.
K. T. Ramakrishna Reddy
Department of Physics, Solar Energy Laboratory, Sri
Venkateswara University, Tirupati - 517 502, India.
Please see the link:- https://doi.org/10.9734/bpi/cmsdi/v3/791
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