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        • Enhanced carrier collection efficiency in hierarchical nano-electrode for a high-performance photoelectrochemical cell

          Hien, Truong Thi,Van Lam, Do,Kim, Chunjoong,Vuong, Nguyen Minh,Quang, Nguyen Duc,Kim, Dahye,Chinh, Nguyen Duc,Hieu, Nguyen Minh,Lee, Seung-Mo,Kim, Dojin Elsevier 2016 Journal of Power Sources Vol.336 No.-

          <P><B>Abstract</B></P> <P>The photoelectrochemical properties of CdS-sensitized ZnO nanorods grown on Pt-coated WO<SUB>3</SUB> nanoplates are investigated to evaluate their effectiveness in hydrogen production. WO<SUB>3</SUB> nanonanoplates are synthesized on glass substrates, followed by atomic layer deposition of Pt thin films as the terminal electrode to efficiently collect the photo-carriers generated from the ZnO/CdS absorption layers. Optimization of the fabrication process for the 3D hierarchical structure is performed, and the morphology and its effect on the photoelectrochemical performance of the electrodes are carefully studied using scanning electron microscopy, x-ray diffraction, and measurements of the photocurrent density and photo-conversion efficiencies. The enhanced PEC performance is elucidated by the 3D hierarchical geometry of the electrode. The optimized electrode shows a photocurrent density of ∼ 13 mA cm<SUP>−2</SUP> and a conversion efficiency of ∼8.0% at −0.83 V (<I>vs</I>. SCE) in 0.5 M Na<SUB>2</SUB>S solution under the illumination of simulated solar light.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Fabrication of 3D hierarchical nanostructure by 2D WO<SUB>3</SUB> combined with 1D ZnO/CdS. </LI> <LI> Pt layer insertion to enhance current collecting capability of the electrode. </LI> <LI> Optimized nanostructural electrode design for the maximum performance. </LI> <LI> Extract the ultimate performance of CdS as a water-splitting photoanode. </LI> </UL> </P>

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          Television Programs for the Youth in Vietnam (A View from Popular Culture) -Case Study of Reality Show “So You Think You Can Dance” Broadcasted by HCMC Television Station-

          ( Nguyen Van Hieu ),( Truong Van Minh ) 전북대학교 인문학연구소 2014 건지인문학 Vol.11 No.-

          This study is to investigate the relationship between TV and popular culture by analyzing a TV program on HTV targeting young people, on the basis of a recent study of the HTV(HCM Television Station), Vietnamese broadcasting company targeting young people. Also, it studies Vietnamese young generation`s desire of culture and characteristics of their acceptance. Vietnamese TV has made very meaningful advancement since 1997. Appearance and popularity of a reality show entitled "So You Think You Can Dance", to be intensively analyzed in this research, is also placed amid this process. From the 1990s, especially from 1997 when Vietnamese government began to announce policies which emphasize socialization of medicine, culture and education, Vietnamese TV met transition period, and particularly development of programs targeting young generation was conspicuous. This phenomenon became a sign of showing association between TV and development of popular culture in Vietnam. And at the same time, this is showing strong integration with the whole world appeared in the stream of Vietnamese globalization. Young people show their own characteristic evidently in their communication mode and messages they accept from TV programs. They are not controlled by unclear messages and have their own thought clearly in watching programs which include the aim at true values, so-called "goodness and beauty", giving them strong messages and coming up to their expectations.

        • Adsorption/desorption kinetics of nitric oxide on zinc oxide nano film sensor enhanced by light irradiation and gold-nanoparticles decoration

          Chinh, Nguyen Duc,Hien, Truong Thi,Do Van, Lam,Hieu, Nguyen Minh,Quang, Nguyen Duc,Lee, Seung-Mo,Kim, Chunjoong,Kim, Dojin Elsevier 2019 Sensors and actuators. B, Chemical Vol.281 No.-

          <P><B>Abstract</B></P> <P>ZnO thin-films with precisely controlled thicknesses were fabricated by the atomic layer deposition and their <I>NO</I> gas sensing properties were investigated at different temperatures, and in particular, under light irradiation of various energy and intensity at room temperature with and without Au catalyst. The molecular dynamics of <I>NO</I> and <I>O</I> <SUB>2</SUB> during the response and recovery cycles in relation with the <I>NO</I> sensing performance in air environment was elaborated using the energy diagram modelled for adsorption and desorption kinetics of the gas molecules. The blue light irradiation combined with Au catalytic effect greatly enhanced the <I>NO</I> response rate, but delayed the recovery rate in the air environment via molecular dynamic interference from the environmental oxygen. The optimum condition for <I>NO</I> sensing was obtained for the film thickness, light energy and intensity. Critical issues for the stable sensor operation such as concentration dependence, gas selectivity, and humidity effect were also reported.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Gas sensing response/recovery kinetics of NO sensing by ZnO with light irradiation and Au catalytic effect at room temperature. </LI> <LI> Molecular dynamics consideration for adsorption and desorption to explain the detection of ppm level gas concentrations. </LI> <LI> The nano-effect in varying thicknesses of ZnO. </LI> </UL> </P>

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