Papers by Keyword: In2S3

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Authors: Xiao Zhang, Hua Wang, Ji Wen Xu, Ling Yang, Ming Fang Ren
Abstract: In2S3 thin films have been prepared on heated glass substrates by ultrasonic spray pyrolysis method. Structure, surface morphology and properties of films with different S/In ratios have been investigated. XRD analysis demonstrated that as-prepared In2S3 thin films have a preferential orientation along the (220) direction and no other phases are observed. Uniformity, density, crystallinity of films were significantly affected by S/In ratios, which influence photoelectric properties of the films. In2S3 thin film is close to standard stoichiometric composition when S/In ratio is 2. Optical transmittance of films is over 90% in the visible region and its energy band gap come up to 2.46eV.
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Authors: Wei Jei Tzeng, Mei Lun Wu, Li Jiaun Lin, Horng Yi Chang
Abstract: The anodized TiO2 nanotube arrays (TNAs) have a benefit to provide large surfaces and straight electron transmitting routes to the electrode. However, it is difficult to fulfill with solid state electrolytes or photosensitive materials into the long TiO2 nanotubes. The substrate of Ti/wave-like TiO2 was prepared by peel-off the TNAs. The In2S3 buffer layer between wave-like TiO2 and CuInS2 determines the photosensitivity of the Ti/wave-like TiO2/In2S3/CuInS2 thin structure. The In2S3 and CuInS2 are well-crystallized at 300oC. The CuInS2 phase forms in In2S3 layer due to Cu diffusion independent on the slight loss of sulfur. The CuInS2 direct deposition on Ti/wave-like TiO2 substrate can not exhibit photosensitivity. When CuInS2 deposited on In2S3 to form Ti/wave-like TiO2/In2S3/CuInS2 structure, the short-circuit current and the open-circuit voltage increase with the thickness increase of In2S3 layer while illuminated by 50 mW/cm2 white light.
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Authors: Hao Yong Yin, Jun Hong Tang, Chun Jie Yan, Qiu Lin Nie, Dan Wu, Qiao Yi Wang
Abstract: The single crystalline In2S3 nanosheets with highly efficient photocatalytic activity have been controllably synthesized via a facile hydrothermal process without adding any surfactant. The morphologies of the nanosheets were characterized by SEM and TEM. The results show the diameter of the nanosheets ranges from 100nm to 400nm. The photocatalytic decomposition of methyl orange on the catalyst shows it has much higher photoactivity than that of nanoTiO2 which means it may be more capable to be used as photocatalyst in decomposition of organic pollutants.
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Authors: Chong Hai Deng, Han Mei Hu, Guo Quan Shao
Abstract: Uniform 3D flower-like β-In2S3 microstructures were synthesized using InCl3·4H2O and KSCN as starting reagents in ethylene glycol at 200-220°C for 30h under solvothermal conditions. The prepared products were characterized by various techniques, such as XRD, XPS, FESEM, TEM and ED. FESEM and TEM observation reveals that the as-prepared flower-like β-In2S3 microstructures are assembled by plate-like nanocrystals with average thickness of 10nm. These nanoplates interconnect with each other to form an entangled network-like architecture with irregular-shaped pore in the flower-like β-In2S3 microstructures. Photoluminescence (PL) spectrum indicates that the synthesized β-In2S3 porous micro spheres have shown considerably greater quantum size effects.
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