Properties of transparent conducting oxides formed from CdO alloyed with In2O3

Ali, H.M.; Hussein, H.M.A.; Wakkad, M. M.; Hasaneen, M.F.

doi:10.1016/j.tsf.2006.06.037

Cited by 61 publications

(20 citation statements)

References 22 publications

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“…The low transmittance of as-deposited films is due to the lack of oxygen resulting from deposition by electron beam evaporation. This result was noted in our previous works [10,[17][18][19] and agrees with that in ref. [23].…”

Section: Effect Of Cdo Buffer Layer Thicknesssupporting

confidence: 94%

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Characterization of ITO/CdO/glass thin films evaporated by electron beam technique

Hussein

Ali

2008

Science and Technology of Advanced Materials

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A thin buffer layer of cadmium oxide (CdO) was used to enhance the optical and electrical properties of indium tin oxide (ITO) films prepared by an electron-beam evaporation technique. The effects of the thickness and heat treatment of the CdO layer on the structural, optical and electrical properties of ITO films were carried out. It was found that the CdO layer with a thickness of 25 nm results in an optimum transmittance of 70% in the visible region and an optimum resistivity of 5.1 × 10 −3 cm at room temperature. The effect of heat treatment on the CdO buffer layer with a thickness of 25 nm was considered to improve the optoelectronic properties of the formed ITO films. With increasing annealing temperature, the crystallinity of ITO films seemed to improve, enhancing some physical properties, such as film transmittance and conductivity. ITO films deposited onto a CdO buffer layer heated at 450• C showed a maximum transmittance of 91% in the visible and near-infrared regions of the spectrum associated with the highest optical energy gap of 3.61 eV and electrical resistivity of 4.45 × 10 −4 cm at room temperature. Other optical parameters, such as refractive index, extinction coefficient, dielectric constant, dispersion energy, single effective oscillator energy, packing density and free carrier concentration, were also studied.

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Section: Effect Of Cdo Buffer Layer Thicknesssupporting

confidence: 94%

“…In our previous studies on pure and doped-CdO films deposited by e-beam [17][18][19], it was noted that these films have a high optical transmittance (>80%) in the visible region and a polycrystalline structure. Moreover, Xiu et al [20] studied CdO as a buffer layer to improve the structural properties of ZnO films.…”

Section: Introductionmentioning

confidence: 99%

Characterization of ITO/CdO/glass thin films evaporated by electron beam technique

Hussein

Ali

2008

Science and Technology of Advanced Materials

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“…The two graphs show sharp rise in transmittance which indicate that the thin films has a good crystallinity [22]. Three factors can reduce the values of transmittance, including high surface scattering reduced the transmittance , impurity center and oxygen deficiency [23].…”

Section: Resultsmentioning

confidence: 94%

Influence of Irradiation on some Optical Properties of (CdO) Thin Films Prepared by Spray Pyrolysis

Habubi

Abrahim

Noore

2017

ILCPA

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Abstract. In this research, the irradiation influence on optical properties of Cadmium oxide thin films deposited on glass substrate via spray pyrolysis method were studied. The thickness of the prepared thin films were 400 and 500 nm respectively. The flow rate was 10 ml/min and the substrate temperature was held constant at 450°C. The thin films are irradiated with gamma ray from Cs-137 of energy 0.662 MeV, the irradiation time is two weeks. The optical absorption and transmission was studied by using UV-Visible spectrophotometer. The absorption coefficients increase after irradiation, while the optical band gaps for 400 nm (CdO) decrease after irradiation from 2.32 to 2.27 eV and for 500 nm (CdO) from 2.30 to 2.12 eV.

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“…ZnO [3] and CdO [4] are well known, particularly as emulsion powders. However, cadmium oxides, CdO and CdO 2 , are usually employed after doping with dierent elements or element oxides like In 2 O 3 [5], F [6], and Al [7,8] in order to enhance its electrical conduction. Zinc oxides also may be combined with cadmium [9] for the same purpose.…”

Section: Introductionmentioning

confidence: 99%

Optical Characterization of (CdO)_x(ZnO)_1-xComposite by Spray Pyrolysis Technique

2014

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Composite cadmium oxideszinc oxides, (CdO)x(ZnO)1−x, thin lms are grown with variable composition, x, by non-conventional spray pyrolysis technique from two separate cavities. X-ray diraction proves the formation of cadmium and zinc peroxides upon deposition. Further annealing in air causes a loss of crystallographic order in zinc oxide grains. Annealing does not aect the structure of cadmium peroxide. The optical constants are estimated by the Murmann exact equation from transmittance and reectance in the wavelength range between 400 and 2400 nm and show normal dispersion. Highest luminescent yield is assigned for samples with composition x = 0.5. Annealing causes increase in luminescence yield of (CdO)x(ZnO)1−x lms that could be explained in the framework of structural change.

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Properties of transparent conducting oxides formed from CdO alloyed with In2O3

Cited by 61 publications

References 22 publications

Characterization of ITO/CdO/glass thin films evaporated by electron beam technique

Characterization of ITO/CdO/glass thin films evaporated by electron beam technique

Influence of Irradiation on some Optical Properties of (CdO) Thin Films Prepared by Spray Pyrolysis

Optical Characterization of (CdO)_x(ZnO)_1-xComposite by Spray Pyrolysis Technique

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Properties of transparent conducting oxides formed from CdO alloyed with In2O3

Cited by 61 publications

References 22 publications

Characterization of ITO/CdO/glass thin films evaporated by electron beam technique

Characterization of ITO/CdO/glass thin films evaporated by electron beam technique

Influence of Irradiation on some Optical Properties of (CdO) Thin Films Prepared by Spray Pyrolysis

Optical Characterization of (CdO)x(ZnO)1-xComposite by Spray Pyrolysis Technique

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Optical Characterization of (CdO)_x(ZnO)_1-xComposite by Spray Pyrolysis Technique