Chemical Spray Pyrolysis Method to Fabricate CdO Thin Films for TCO Applications

Fluorine doped tin oxide (FTO) thin films were synthesized by chemical spray pyrolysis method on glass substrates for 10 at.%, 15 at.%, 20 at.% of fluorine doping concentrations. Their structural, optical and electrical properties were investigated. X-ray diffraction (XRD) study shows polycrystalline nature of the films with orthorhombic crystal structure. The grain size (D) was observed in the range of 14 nm to 30 nm. The FESEM images of the FTO thin films reveals that the films have smooth and homogeneous surface morphology with thin granular grains distributed throughout the surface. EDX analysis confirms the presence of Sn, O and F elements in the prepared FTO thin films. Photoluminescence (PL) spectrum shows a broad emission which covers near band edge (NBE) as well as deep level emissions (DLE) in the region 380 nm and 620 nm. From the hall effect measurements, it was observed that all the films exhibit n-type conductivity. The sample grown with 10 at. % of fluorine showed the highest transmission percentage (80%) with high mobility and conductivity, which are basic requirements for a TCO.

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Effect of Fluorine Doping on Structural and Optical Properties of SnO<sub>2</sub> Thin Films Prepared by Chemical Spray Pyrolysis Method

Advances in Materials ◽

10.11648/j.am.20160504.12 ◽

2016 ◽

Vol 5 (4) ◽

pp. 23 ◽

Cited By ~ 8

Author(s):

Nabeel A. Bakr

Keyword(s):

Thin Films ◽

Optical Properties ◽

Spray Pyrolysis ◽

Spray Pyrolysis Method ◽

Chemical Spray Pyrolysis ◽

Fluorine Doping ◽

Structural And Optical Properties ◽

Pyrolysis Method ◽

Chemical Spray

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STUDYING THE EFFECT OF AG DOPING ON THE STRUCTURAL AND OPTICAL PROPERTIES OF CDO THIN FILMS PREPARED BY CHEMICAL SPRAY PYROLYSIS METHOD

MINAR International Journal of Applied Sciences and Technology ◽

10.47832/2717-8234.2-3.22 ◽

2021 ◽

Vol 03 (02) ◽

pp. 174-182

Author(s):

Hiba Qays Khaleel AL QAISY ◽

Huda M .J. ALI ◽

Ramiz Ahmad AL-ANSARI

Keyword(s):

Thin Films ◽

Optical Properties ◽

Spray Pyrolysis ◽

Ultra Violet ◽

Spray Pyrolysis Method ◽

Chemical Spray Pyrolysis ◽

Slight Variation ◽

Ag Doping ◽

Pyrolysis Method ◽

Cdo Thin Films

In this work, thin films of undoped and Ag-doped CdO with (1and 3) wt.% were prepared by using spray pyrolysis method on glass substrate at of 350ºC with films thicknesses of (160-190) nm using spraying rate and pyrolysis time is 5 ml/min an 5sec respectively. The X-ray diffraction investigated the structural types of the CdO thin films after and before doped by Ag, XRD analysis showed that CdO:Ag films are highly polycrystalline and exhibit cubic crystal structure with (111) preferred orientation. However, the peak for all CdO:Ag films became more intense with a slight variation. The optical properties measure by ultra violet spectra, the optical study shows the spectral transmission and the optical energy band gap increases from 64.77% and 2.50 eV to 71.11% and 2.70 eV respectively depending upon the Ag content in the films, in contrary with the absorbance that increases with the decrease in wavelength and decreases with the increasing Ag doping concentration.

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Study of Physical Properties of Zn1-xAgxO Thin Films Deposited by Chemical Spray Pyrolysis

Oriental Journal Of Chemistry ◽

10.13005/ojc/340560 ◽

2018 ◽

Vol 34 (5) ◽

pp. 2667-2670 ◽

Cited By ~ 1

Author(s):

Bhawna Sarwan ◽

Aman Deep Acharya

Keyword(s):

Thin Films ◽

Grain Size ◽

Physical Properties ◽

Spray Pyrolysis ◽

Optical Measurement ◽

Filler Concentration ◽

Spray Pyrolysis Method ◽

Chemical Spray Pyrolysis ◽

Pyrolysis Method ◽

Chemical Spray

To investigate the influence of Ag concentration on physical properties, the Zn1-xAgxO films were synthesized by chemical spray pyrolysis method. The crystallite size was found to decrease for low concentration of Ag then increase upto 50 nm with increase in Ag content. AFM measurement implies that the roughness and grain size increased due to coalescence of petite grains into larger size. In optical measurement, band gap is found to be decreased with increase in filler concentration.

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