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|Title:||TRANSPARENT CONDUCTING FILMS: EXPERIMENT, THEORY AND APPLICATION||Authors:||CHEN ZHANGXIAN||Keywords:||transparent conducting film, Sn-doped indium oxide, density functional theory, surface modification, two-dimensional, gallium sulfide||Issue Date:||16-Jan-2014||Citation:||CHEN ZHANGXIAN (2014-01-16). TRANSPARENT CONDUCTING FILMS: EXPERIMENT, THEORY AND APPLICATION. ScholarBank@NUS Repository.||Abstract:||A solution process is developed to deposit transparent conducting ITO films. The properties are comparable with typical benchmark. The control over hydrolysis process is crucial for the enhanced properties. DFT calculations on electronic structures of In2O3 n-type doped by different elements are studied. Si, Ge and Sn can provide large band width, low effective mass and high electron velocity. Sn displays a shallow donor level under both indium-rich and oxygen-rich conditions. A novel transparent conductor based on two-dimensional GaS is studied by DFT. After doping, GaS shows metallic band feature and Burstein-Moss shift. Calculated carrier transport properties show a low resistivity of 10-4 O¿cm, comparable with typical ITO films. Various spectroscopies are utilized to investigate the adsorption of trimesic acid on ITO nanoparticles. Adsorption of molecules on ITO (111) surface is simulated. Both results reveal that the molecule is adsorbed in upstanding configurations by dissociation to form carboxylate species.||URI:||http://scholarbank.nus.edu.sg/handle/10635/107850|
|Appears in Collections:||Ph.D Theses (Open)|
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