Comparative Study of Structural, Optical and Electrical Properties of SnO<sub>2</sub> Thin Film Growth via CBD, Drop-Cast and Dip-Coating Methods — Oak Academic Publishing
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Comparative Study of Structural, Optical and Electrical Properties of SnO<sub>2</sub> Thin Film Growth via CBD, Drop-Cast and Dip-Coating Methods
Department of Electrical and Electronic Engineering, Islamic University, Kushtia, Bangladesh
,
Department of Electrical and Electronic Engineering, Islamic University, Kushtia, Bangladesh
,
Department of Electrical and Electronic Engineering, Islamic University, Kushtia, Bangladesh
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Department of Electrical and Electronic Engineering, Noakhali Science and Technology University, Noakhali, Bangladesh
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Atomic Energy Centre, Bangladesh Atomic Energy Commission, Dhaka, Bangladesh
,
Bangladesh Council of Scientific and Industrial Research, Dhaka, Bangladesh
,
Bangladesh Council of Scientific and Industrial Research, Dhaka, Bangladesh
,
Department of Electrical and Electronic Engineering, Islamic University, Kushtia, Bangladesh
1 Department of Electrical and Electronic Engineering, Islamic University, Kushtia, Bangladesh
2 Department of Electrical and Electronic Engineering, Islamic University, Kushtia, Bangladesh
3 Department of Electrical and Electronic Engineering, Islamic University, Kushtia, Bangladesh
4 Department of Electrical and Electronic Engineering, Noakhali Science and Technology University, Noakhali, Bangladesh
5 Atomic Energy Centre, Bangladesh Atomic Energy Commission, Dhaka, Bangladesh
6 Bangladesh Council of Scientific and Industrial Research, Dhaka, Bangladesh
7 Bangladesh Council of Scientific and Industrial Research, Dhaka, Bangladesh
8 Department of Electrical and Electronic Engineering, Islamic University, Kushtia, Bangladesh
Tin oxide (SnO 2 ) thin films were deposited on glass substrate by Chemical Bath Deposition (CBD), Drop-Cast and Dip-Coating method. The thin films were post-annealed at 500°C for 2 hours. The structural, optical, and electrical properties of the SnO 2 thin films were investigated by using XRD, FTIR, SEM, EDX, UV-Vis spectroscopy, and Electrometer experiment. The XRD patterns of SnO 2 thin films deposited on glass substrate by CBD method, Drop-Cast method and Dip-Coating method showed cubic, tetragonal and amorphous structures respectively. The FTIR spectrum exhibited the strong presence of SnO 2 with the characteristic vibrational mode of Sn-O-Sn. The SEM analysis was observed that the surface morphology of the thin films toughly depends on the deposition methods of the SnO 2 thin films. EDX measurement confirmed that the thin films are the composition of Tin (Sn) and Oxygen (O 2 ). The optical band gap of SnO 2 thin films deposited by CBD method, Drop-Cast method and Dip-Coating method is found to be 3.12 eV, 3.14 eV and 3.16 eV respectively. Thin films deposited by Dip-Coating method showed the highest band gap. The electrical results confirmed that the SnO 2 thin films are good conductors and pursued Ohm’s Law. These properties of the SnO 2 thin films brand are appropriate for application in solar cell assembly, gas sensor devices and transparent electrodes of panel displays.
KeywordsSnO<sub>2</sub>Thin FilmCBDDrop-Cast and Dip-Coating MethodElectrical
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