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Carrier recombination in sonochemically synthesized ZnO powders

1 Introduction ZnO is a wide band gap semiconductor with a high exciton binding energy which attracts considerable scientific and applied interest with respect to exploiting its optical properties [ 1 – 5 ]. For example, high thermal and chemical stability, simple tunability of the optical and electrical properties are widely applicable in optoelectronic devices [ 6 , 7 ]. Moreover, while exhibiting an excitonic emission peak in the ultraviolet (UV) region, ZnO typically shows strong visible luminescence bands which are due to numerous point defects

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Effect of in Doping on the ZnO Powders Morphology and Microstructure Evolution of ZnO:In Ceramics as a Material for Scintillators

REFERENCES 1. Klingshirn, C. F., Meyer, B. K., Waag, A., & Hoffmann, A. (2010). Zinc oxide. From fundamental properties towards novel applications. Springer Series in Materials Science. 120. Springer, Heidelberg. 2. Ozgur, U., Alivov, Y I., Liu, C., Teke A., Reshchikov, M. A., Dogan, S.... Morkoc, H. (2005). A comprehensive review of ZnO materials and device s. J. App.Phys. 98, 04301l. 3. Zhang, Z., Du, J., Li, B., Zhang, S., Hong, M., Zhang, X. …Zhang, Y. (2017). Ultrathin strain gated field effect transistor based on In-doped ZnO nanobelts

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The Kinetic Study of The Hydrothermal Growth of Zno Nanorod Array Films / Zno Nanostieņu Kopu Pārklājuma Hidrotermālās Augšanas Kinētikas Izpēte

References 1. Tang, W., and Wang, J. (2015). Mechanism for toluene detection of flower-like ZnO sensors prepared by hydrothermal approach: Charge transfer. Sensors and Actuators B, 207, 66-73. 2. Wei, A., Pan, L., and Huang, W. (2011). Recent progress in the ZnO nanostructure-based sensors. Materials Science and Engineering B, 176, 1409-1421. 3. Arya, S.K., Saha, S., Ramirez-Vick, J. E., Gupta, V., Bhansali, S., and Singh, S.P. (2012). Recent advances in ZnO nanostructures and thin films for biosensor

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Photoelectric Properties of Screen-Printed Al-Doped ZnO Films

References Martin, A. Green, Keith Emery, Yoshihiro Hishikawa & Wilhelm Warta, (2009). Solar Cell Efficiency Tables (Version 33). Prog. Photovolt.: Res. Appl., 17 , 85-94. Nagare , B.J, Sajeev Chacko & Kanhere , D. G. (2010) Ferromagnetism in carbon doped zinc oxide systems. J. Phys. Chem. A., 114 (7), 2689-2696. DOI: 10.1021/jp910594m. Huihui Huang, Guojia Fang, Xiaoming Mo, Hao Long, Longyan Yuan, Binzhong Dong, Xianquan Meng, & Xingzhong Zhao. (2009). ZnO-based fairly

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Facile synthesis of hierarchical ZnO microstructures with enhanced photocatalytic activity

materials. However, some drawbacks seem to exist in the original method, especially the use of toxic surfactants [ 6 – 8 ]. Moreover, these surfactants are difficult to be removed, and usually appropriate solvents are needed to wash them off. Thus, the morphology-controlled synthesis of the well aligned hierarchical structures via a simple, surfactant-free method is of great importance. Zinc oxide (ZnO), as an important semiconductor material has been extensively investigated because of its great potential applications in electronics, photoelectronics, optics, sensors

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Effect of cerium on structural and optical properties of ZnO aerogel synthesized in supercritical methanol

1 Introduction Metal oxides nanoparticles have received considerable importance in many technological applications. The search for new methods and processes to synthesize functional nanometric materials for specific applications in different areas, such as catalysis, paint and cosmetics is one of many laboratories priorities. The physical properties of nanomaterials are highly sought and used in pigments, plastics and lubricants. Zinc oxide (ZnO) is a semiconducting material characterized by a wide gap (3.37 eV) and a large exciton binding energy (60 meV

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Precursor concentration effect on structure and morphology of ZnO for coatings on fabric substrates

References 1. Lin Wang, Zhong "Nanostructures of Zinc Oxide", Materials today, june 2004 , 26-33. 2. Saito, M. Antibacterial, deodorizing, and UV absorbing materials obtained with zinc oxide (ZnO) coated fabrics. J. Ind. Text. 1993 , 23 (2): 150-164 3. Li, Qun; Chen, Shui-Lin; Jiang, Wan-Chao Durability of nano ZnO antibacterial cotton fabric to sweat. J. Appl. Polym. Sci. 2007 , 103, 412-415. 4. Mitchnick, M.A.; Fairhurst, D.; Pinnell, S.R. Microfine zinc oxide (Z-cote) as a

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Photocatalitic Properties of Tio2 and ZnO Nanopowders / Tio2 un Zno Nanopulveru Fotokatalitiskās Īpašības

., Song, Z., Shan, Ch., Zhang, Z., Li, B., & Shen, D. (2011) Gold nanoparticles modified ZnO nanorods with improved photocatalytic activity. J. Colloid Interface Sci ., 363 , 175-181. 5. Zhao, X., Yao, W., Wu, Y., Zhang, Sh., Yang, H., & Zhu, Y. (2006). Fabrication and photochemical properties of porous ZnWO4 film. J. of Solid State Chem ., 179 , 2562-2570. 6. Grigorjeva, L., Millers, D., Grabis, J., & Jankovica, Dz. (2011). Photoluminescence and photocatalytic activity of zinc tungsten powders. Cent. Eur. J. Phys ., 9 (2), 510

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The Study of Adsorption Process of Pb Ions Using Well-Aligned Arrays of ZnO Nanotubes as a Sorbent

REFERENCES 1. Amin, M.T., Alazba, A.A., & Manzoor, U. (2014). A review of removal of pollutants from water/wastewater using different types of nanomaterials, Adv. Mater.Sci. Eng. , 1–24.DOI: http://dx.doi.org/10.1155/2014/825910 . 2. Singh, S., Barick, K.C., & Bahadur, D. (2013). Functional oxide nanomaterials and nanocomposites for the removal of heavy metals and dyes. Nanomater. Nanotechnol, 3 (20). DOI 10.5772/57237. 3. Rahman, M.M., Bahadar, K., Hadi, S., & Marwani, M. (2014). Low dimensional Ni-ZnO nanoparticles as marker of toxic lead

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Influence of zinc concentration on band gap and sub-band gap absorption on ZnO nanocrystalline thin films sol-gel grown

1 Introduction Recently, transparent conducting oxides received considerable interests due to their excellent physical, optical and electrical properties. Among them, ZnO is a promising candidate of II-VI group semiconducting material with direct band gap of 3.30 eV and high exciton binding energy of 60 meV at room temperature. Thin films of ZnO are biocompatible, with high chemical and thermal stability and have superb physical properties. They have been used in various applications, such as surface acoustic waves, gas sensors, diode lasers and

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