نتایج جستجو برای: zno thin films

تعداد نتایج: 197251  

2011
K. Saravanakumar

Nanocrystalline zinc oxide (ZnO) thin films have been prepared on glass substrates at different temperatures through planar RF-magnetron sputtering. Structural properties with respect to substrate temperature have been studied with xray diffraction (XRD) patterns. The stoichiometry in the films is studied with X-ray photoemission spectroscopy (XPS). The shifts in the absorption edge of the film...

2016
W. Anwand G. Brauer J. Connolly E. McCarthy J.-P. Mosnier

ZnO thin films deposited on various substrates were characterized by slow positron implantation spectroscopy (SPIS) combined with X-ray diffraction (XRD). All films studied exhibit wurtzite structure and crystallite size 20-100 nm. The mosaic spread of crystallites is relatively small for the films grown on single crystalline substrates while it is substantial for the film grown on amorphous su...

2016
Hyeonju Lee Xue Zhang Jaeeun Hwang Jaehoon Park

We report on the morphological influence of solution-processed zinc oxide (ZnO) semiconductor films on the electrical characteristics of ZnO thin-film transistors (TFTs). Different film morphologies were produced by controlling the spin-coating condition of a precursor solution, and the ZnO films were analyzed using atomic force microscopy, X-ray diffraction, X-ray photoemission spectroscopy, a...

2004
Min GUO Peng DIAO Sheng Min CAI

Highly oriented ZnO nanotube array films on the conducting substrates have been synthesized by a simple hydrothermal method and characterized by scanning electron microscopy (SEM) and UV-Vis spectroscopy. The thin films consisting of laterally fragmentized ZnO nanotubes with controlled orientation have been tested as photoanode in Grätzel-type solar cell. For a sandwich-type cell, with 0.5 mol/...

2013
W. Anwand G. Brauer J. Connolly E. McCarthy J.-P. Mosnier

ZnO thin films deposited on various substrates were characterized by slow positron implantation spectroscopy (SPIS) combined with X-ray diffraction (XRD). All films studied exhibit wurtzite structure and crystallite size 20-100 nm. The mosaic spread of crystallites is relatively small for the films grown on single crystalline substrates while it is substantial for the film grown on amorphous su...

2004
E. Barthel

We have developed a wedge-loaded double-cantilever beam adhesion measurement set-up for thin films deposited on glass by sputtering. The test is described in details. Results on the Glass/sublayer/Ag/ZnO multilayer provide evidence that SnO2 or TiO2 perform better than ZnO as a sublayer. Then however, rupture within the multilayer shifts to the upper Ag/ZnO interface. The latter is shown to be ...

2015
Okechukwu Ogbuu Qingyang Du Hongtao Lin Lan Li Yi Zou Erick Koontz Charmayne Smith Sylvain Danto Kathleen Richardson Juejun Hu

Multicomponent TeO2–Bi2O3–ZnO (TBZ) glass thin films were prepared using RF magnetron sputtering under different oxygen flow rates. The influences of oxygen flow rate on the structural and optical properties of the resulting thin films were investigated. We observed that thin films sputtered in an oxygen-rich environment are optically transparent while those sputtered in an oxygen-deficient env...

Journal: :Molecules 2012
Mohammad Reza Khanlary Vahid Vahedi Ali Reyhani

In this research high-quality zinc oxide (ZnO) nanowires have been synthesized by thermal oxidation of metallic Zn thin films. Metallic Zn films with thicknesses of 250 nm have been deposited on a glass substrate by the PVD technique. The deposited zinc thin films were oxidized in air at various temperatures ranging between 450 °C to 650 °C. Surface morphology, structural and optical properties...

2014
Wooseok Song Soon Yeol Kwon Sung Myung Min Wook Jung Seong Jun Kim Bok Ki Min Min-A Kang Sung Ho Kim Jongsun Lim Ki-Seok An

In order to combine advantages of ZnO thin film transistors (TFTs) with a high on-off ratio and graphene TFTs with extremely high carrier mobility, we present a facile methodology for fabricating ZnO thin film/graphene hybrid two-dimensional TFTs. Hybrid TFTs exhibited ambipolar behavior, an outstanding electron mobility of 329.7 ± 16.9 cm(2)/V·s, and a high on-off ratio of 10(5). The ambipolar...

2013
Huidan Zeng Ying Cao Shufan Xie Junhe Yang Zhihong Tang Xianying Wang Luyi Sun

Large-scale vertically aligned ZnO nanowires with high crystal qualities were fabricated on thin graphene oxide films via a low temperature hydrothermal method. Room temperature photoluminescence results show that the ultraviolet emission of nanowires grown on graphene oxide films was greatly enhanced and the defect-related visible emission was suppressed, which can be attributed to the improve...

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