Correlation between the structural, morphological, optical, and electrical properties of In2O3 thin films obtained by an ultrasonic spray CVD process

Indium oxide （In2O3） thin films are successfully times by an ultrasonic spray technique using Indium chloride deposited on glass substrate at different deposition as the precursor solution; the physical properties of these films are characterized by XRD, SEM, and UV-visible. XRD analysis showed that...

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Bibliographic Details
Published inJournal of semiconductors Vol. 36; no. 8; pp. 9 - 14
Main Authors Bouhdjer, A., Attaf, A., Saidi, H., Bendjedidi, H., Benkhetta, Y., Bouhaf, I.
Format Journal Article
LanguageEnglish
Published Chinese Institute of Electronics 01.08.2015
Subjects
CVD
deposition time
indium oxide
optical and electrical properties
ultrasonic spray
XRD分析
形态
晶体结构
氧化铟薄膜
沉积时间
电性能
超声喷雾
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Summary:Indium oxide （In2O3） thin films are successfully times by an ultrasonic spray technique using Indium chloride deposited on glass substrate at different deposition as the precursor solution; the physical properties of these films are characterized by XRD, SEM, and UV-visible. XRD analysis showed that the films are polycrys- talline in nature having a cubic crystal structure and symmetry space group Ia3 with a preferred grain orientation along the （222） plane when the deposition time changes from 4 to 10 min, but when the deposition time equals 13 min we found that the majority of grains preferred the （400） plane. The surface morphology of the In2O3 thin films revealed that the shape of grains changes with the change of the preferential growth orientation. The trans- mittance improvement of In2O3 films was closely related to the good crystalline quality of the films. The optical gap energy is found to increase from 3.46 to 3.79 eV with the increasing of deposition time from 4 to 13 min. The film thickness was varied between 395 and 725 nm. The film grown at 13 min is found to exhibit low resistivity （10-2 Ω.cm）, and relatively high transmittance （- 93%）.
Bibliography:A. Bouhdjer, A. Attaf, H. Saidi, H. Bendjedidi, Y. Benkhetta, and I. Bouhaf（ Laboratory of Semiconductors Materials, University ofMed Kheider, BP 145 RP 07000 Biskra, Algeria）
indium oxide; deposition time; ultrasonic spray; optical and electrical properties
Indium oxide （In2O3） thin films are successfully times by an ultrasonic spray technique using Indium chloride deposited on glass substrate at different deposition as the precursor solution; the physical properties of these films are characterized by XRD, SEM, and UV-visible. XRD analysis showed that the films are polycrys- talline in nature having a cubic crystal structure and symmetry space group Ia3 with a preferred grain orientation along the （222） plane when the deposition time changes from 4 to 10 min, but when the deposition time equals 13 min we found that the majority of grains preferred the （400） plane. The surface morphology of the In2O3 thin films revealed that the shape of grains changes with the change of the preferential growth orientation. The trans- mittance improvement of In2O3 films was closely related to the good crystalline quality of the films. The optical gap energy is found to increase from 3.46 to 3.79 eV with the increasing of deposition time from 4 to 13 min. The film thickness was varied between 395 and 725 nm. The film grown at 13 min is found to exhibit low resistivity （10-2 Ω.cm）, and relatively high transmittance （- 93%）.
11-5781/TN
ISSN:1674-4926
DOI:10.1088/1674-4926/36/8/082002