Journal ArticleDOI
Fabrication and Luminescent Properties of c-Axis Oriented ZnO−ZnS Core−Shell and ZnS Nanorod Arrays by Sulfidation of Aligned ZnO Nanorod Arrays
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In this paper, the authors reported the preparation of vertically aligned ZnO−ZnS core−shell and ZnS nanorod arrays with crystallographic orientation along the c-axis by sulfidation.Abstract:
In this paper, we report the preparation of vertically aligned ZnO−ZnS core−shell and ZnS nanorod arrays with crystallographic orientation along the c-axis by sulfidation of aligned ZnO nanorod arrays. The ZnO nanorod arrays were prepared by a surfactant assisted soft chemical method on a sol−gel derived ZnO thin film. Partial conversion of the ZnO nanorod surface to ZnS at 400 °C in an H2S and argon gas mixture produces ZnO−ZnS core−shell structures, whereas the complete conversion at 600 °C produces well-aligned ZnS nanorods. The influence of the sulfidation time and annealing temperature on the conversion of ZnO nanorods to ZnO−ZnS core−shell nanorods is investigated. TEM studies revealed that the sulfidation process begins at the surface of the ZnO nanorods, which gradually increase inward, retaining the morphology and following the crystal orientation of the ZnO core. The nanostructures showed enhanced UV emission properties. The described procedures open a way to convert a microstructured material i...read more
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One-dimensional ZnO nanostructures: Solution growth and functional properties
Sheng Xu,Zhong Lin Wang +1 more
TL;DR: A comprehensive overview of the progress that has been made within the context of 1D ZnO nanostructures synthesized via wet chemical methods can be found in this paper, where the synthetic methodologies and corresponding growth mechanisms, different structures, doping and alloying, position-controlled growth on substrates, and finally, their functional properties as catalysts, hydrophobic surfaces, sensors, and in nanoelectronic, optical, optoelectronics, and energy harvesting devices.
Journal ArticleDOI
ZnS nanostructures: From synthesis to applications
Xiaosheng Fang,Xiaosheng Fang,Tianyou Zhai,Ujjal K. Gautam,Liang Li,Limin Wu,Yoshio Bando,Dmitri Golberg +7 more
TL;DR: In this paper, a comprehensive review of the state-of-the-art research activities related to ZnS nanostructures is provided, with the focus on the critical experiments determining the electrical, chemical and physical parameters of the nanostructure, and the interplay between synthetic conditions and nanoscale morphologies.
Journal ArticleDOI
Optical properties of ZnO/ZnS and ZnO/ZnTe heterostructures for photovoltaic applications.
TL;DR: It is proposed that ZnO/ZnS core/shell nanowires can be used as photovoltaic devices with organic polymer semiconductors as p-channel contacts with band-corrected pseudopotential density functional theory calculations.
Journal ArticleDOI
ZnS Nanostructure Arrays: A Developing Material Star
TL;DR: The research on ZnS nanostructure arrays has seen remarkable progress over the last five years due to the unique properties and important potential applications of nanost structure arrays, which are summarized here.
Journal ArticleDOI
Mechanism Study of ZnO Nanorod-Bundle Sensors for H2S Gas Sensing
Jae-Hyun Kim,Kijung Yong +1 more
TL;DR: In this paper, the H2S gas-sensing properties of ZnO nanorod bundles and an investigation of their gas sensing mechanism were reported. But, the results were limited to the case of air containing dilute H 2S gas (50 ppm) at sensing temperatures ≤ 500 °C.
References
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Michael H. Huang,Samuel S. Mao,Henning Feick,Haoquan Yan,Yiying Wu,Hannes Kind,Eicke R. Weber,Richard E. Russo,Peidong Yang,Peidong Yang +9 more
TL;DR: Room-temperature ultraviolet lasing in semiconductor nanowire arrays has been demonstrated and self-organized, <0001> oriented zinc oxide nanowires grown on sapphire substrates were synthesized with a simple vapor transport and condensation process.
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(CdSe)ZnS Core-Shell Quantum Dots - Synthesis and Characterization of a Size Series of Highly Luminescent Nanocrystallites
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TL;DR: In this paper, a synthesis of highly luminescent (CdSe)ZnS composite quantum dots with CdSe cores ranging in diameter from 23 to 55 A was reported.
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Optically pumped lasing of ZnO at room temperature
TL;DR: In this paper, the authors reported the observation of optically pumped lasing in ZnO at room temperature using a plasma-enhanced molecular beam epitaxy on sapphire substrates.
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Semiconductor nanowires and nanotubes
TL;DR: In this article, a review highlights the recent advances in the field, using work from this laboratory for illustration, and the understanding of general nanocrystal growth mechanisms serves as the foundation for the rational synthetic control of one-dimensional nanoscale building blocks, novel properties characterization and device fabrication based on nanowire building blocks.
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Ultraviolet-emitting ZnO nanowires synthesized by a physical vapor deposition approach
TL;DR: In this article, the unidirectional growth of the ZnO nanowires was controlled by the conventional vapor-liquid solid mechanism, and the observed room temperature UV emission was ascribed to the decrease in structure defects as compared to bulk materials.