The Experts below are selected from a list of 11484 Experts worldwide ranked by ideXlab platform
Gaorong Han - One of the best experts on this subject based on the ideXlab platform.
-
Double-potentiostatic electrodeposition of Ag nanoflowers on ITO Glass for reproducible surface-enhanced (resonance) Raman scattering application
Electrochimica Acta, 2012Co-Authors: Juncao Bian, Zhong-dong Chen, Xiwen Zhang, Shan Jiang, Gaorong HanAbstract:Abstract Herein, we first report electrodeposition of dense (1.3× 109 cm−2) and uniform (RSD of size is about 11%) Ag nanoflowers on ITO Glass by a double-potentiostatic method without any surfactant. Raman spectra showed that the Ag nanoflowers with multiple petals on ITO Glass exhibited excellent SER(R)S ability. It could accommodate a considerable range of sample concentrations (10−10 M at least for rhodamine 6G). The smallest RSD of the intensities for 1651 cm−1 Raman band of rhodamine 6G was about 14.1%, indicating good reproducibility. Through the time-dependent morphological evolution investigation and high-resolution transmission electron microscopy (HRTEM) analysis, the formation of petals was ascribed to the slow reduction rate and high nucleation driving force by electrical field concentration.
-
The effect of Tb doped PbTiO3 inducing layer on texture and tunable property of sol–gel derived Pb0.4Sr0.6TiO3 thin films grown on ITO/Glass substrate
Journal of Crystal Growth, 2010Co-Authors: Biao Wang, Gaorong Han, Wenjian Weng, Chenlu SongAbstract:Abstract Highly (1 0 0)-oriented Pb 0.4 Sr 0.6 TiO 3 (PST40) thin films have been prepared on the Tb doped PbTiO 3 (PTT) thin film coated ITO/Glass substrate by sol–gel technique. The PTT inducing layers are (1 0 0)-oriented and can help to control the orientation of PST40 thin films. Crystallization of the PST40 thin film with the PTT inducing layer is more perfect than that without PTT layer due to less distortion in the thin film. The dielectric tunability of the PST40 thin film with PTT layer therefore reaches 65%, which is 85% higher than that without PTT layer. The dielectric loss of the PST thin film is only 0.05. These results indicate that (1 0 0)-oriented Tb doped PbTiO 3 can be used as an inducing layer for highly (1 0 0)-oriented tunable materials on ITO/Glass substrate.
-
Effect of Tb3+ doping on the preferred orientation of lead titanate thin film prepared by sol–gel method on ITO/Glass substrates
Surface & Coatings Technology, 2005Co-Authors: Liwen Tang, Xiaohui Zhao, Wenjian Weng, Gaorong HanAbstract:Abstract Tb doped PbTiO 3 (PT) thin films were prepared on ITO/Glass substrates by sol–gel method. XRD was used to investigate the phase status of the thin films. It is shown that through rapid thermal process, the perovskite phase PbTiO 3 thin films with highly (100) preferred orientation could be formed on the astatic ITO/Glass substrates when Tb is doped into PbTiO 3 system. The (100) preferred orientation of Tb-doped PbTiO 3 films is attributed to the heterogeneous nucleation mechanism of the perovskite PbTiO 3 phase induced by Tb doping and rapid thermal preparation process. It is successfully explained according to this mechanism that the content of the (100) oriented Tb-doped perovskite phase in PbTiO 3 films varies with Tb doping concentration. An optimal doping concentration of Tb to achieve highly (100) oriented and well-crystallized PbTiO 3 films is discovered. And a theoretical equation of the perovskite phase content as a function of Tb doping concentration is deduced.
-
effect of tb3 doping on the preferred orientation of lead titanate thin film prepared by sol gel method on ITO Glass substrates
Surface & Coatings Technology, 2005Co-Authors: Liwen Tang, Xiaohui Zhao, Wenjian Weng, Gaorong HanAbstract:Abstract Tb doped PbTiO 3 (PT) thin films were prepared on ITO/Glass substrates by sol–gel method. XRD was used to investigate the phase status of the thin films. It is shown that through rapid thermal process, the perovskite phase PbTiO 3 thin films with highly (100) preferred orientation could be formed on the astatic ITO/Glass substrates when Tb is doped into PbTiO 3 system. The (100) preferred orientation of Tb-doped PbTiO 3 films is attributed to the heterogeneous nucleation mechanism of the perovskite PbTiO 3 phase induced by Tb doping and rapid thermal preparation process. It is successfully explained according to this mechanism that the content of the (100) oriented Tb-doped perovskite phase in PbTiO 3 films varies with Tb doping concentration. An optimal doping concentration of Tb to achieve highly (100) oriented and well-crystallized PbTiO 3 films is discovered. And a theoretical equation of the perovskite phase content as a function of Tb doping concentration is deduced.
-
MBE growth and structural characterization of ZnS1-xSex thin films on ITO/Glass substrates
Journal of Materials Science Letters, 2003Co-Authors: D. Shen, Gaorong Han, Duan-lin Que, Ning Wang, Iam Keong SouAbstract:The growth and characterization of ZnS1-xSex thin flms on indium tin oxide (ITO) Glass substrates was investigated. The chemical compositions of the films were determined by using X-ray photoelectron spectroscopy (XPS). The results showed that the MBE grown polycrystalline ZnS1-xSex thin films on ITO Glass substrates could achieve high structural quality
Tsung-ying Tsai - One of the best experts on this subject based on the ideXlab platform.
-
Fabrication of Fully Transparent Indium-Doped ZnO Nanowire Field-Effect Transistors on ITO/Glass Substrates
Journal of The Electrochemical Society, 2011Co-Authors: Cheng-liang Hsu, Tsung-ying TsaiAbstract:Fully transparent indium (In)-doped ZnO nanowire field-effect transistors were prepared on a patterned SiO 2 /indium tin oxide (ITO)/SiO 2 /ITO/Glass substrate by reactive evaporation. A crabwise In-doped ZnO nanowire is adopted in photodetectors, with a photocurrent to dark current contrast ratio of only 24.1. Crabwise In-doped ZnO nanowire field-effect transistors performed excellently with a mobility of 85.2 cm 2 V -1 s -1 . The ability to tune n-type conduction and the understanding of the transport properties of crabwise In-doped ZnO nanowires together represents an important step toward the development of ZnO nanowire-based electronic and photoelectronic devices.
-
fabrication of fully transparent indium doped zno nanowire field effect transistors on ITO Glass substrates
Journal of The Electrochemical Society, 2011Co-Authors: Cheng-liang Hsu, Tsung-ying TsaiAbstract:Fully transparent indium (In)-doped ZnO nanowire field-effect transistors were prepared on a patterned SiO 2 /indium tin oxide (ITO)/SiO 2 /ITO/Glass substrate by reactive evaporation. A crabwise In-doped ZnO nanowire is adopted in photodetectors, with a photocurrent to dark current contrast ratio of only 24.1. Crabwise In-doped ZnO nanowire field-effect transistors performed excellently with a mobility of 85.2 cm 2 V -1 s -1 . The ability to tune n-type conduction and the understanding of the transport properties of crabwise In-doped ZnO nanowires together represents an important step toward the development of ZnO nanowire-based electronic and photoelectronic devices.
Young Jin Kim - One of the best experts on this subject based on the ideXlab platform.
-
Luminescent properties of CaTiO3:Pr thin-film phosphor deposited on ZnO/ITO/Glass substrate
Journal of Luminescence, 2005Co-Authors: Sung Mook Chung, Sang Hyuk Han, Kuk Hyun Song, Eung Soo Kim, Young Jin KimAbstract:Red-emitting CaTiO3:Pr phosphor thin films were deposited on Glass, ZnO/ITO/Glass, and ITO/Glass substrates by RF magnetron sputtering. The effects of various substrates and heat treatment on the structural and luminous properties were investigated. The films deposited on ZnO/ITO/Glass exhibited superior crystallinity and more enhanced PL and CL properties compared with those on ITO/Glass. The intermediate ZnO layer between phosphor film and ITO contributed to the growing behaviors and the roughening of CaTiO3:Pr phosphor thin films, and consequently, to the excellent luminescence. The luminescent properties of the films were improved by following heat-treatment due to a combination of factors, namely the transformation from amorphous to poly crystalline phases, the activation of the activators, and the elimination of microdefects.
-
luminescent properties of catio3 pr thin film phosphor deposited on zno ITO Glass substrate
Journal of Luminescence, 2005Co-Authors: Sung Mook Chung, Sang Hyuk Han, Kuk Hyun Song, Eung Soo Kim, Young Jin KimAbstract:Red-emitting CaTiO3:Pr phosphor thin films were deposited on Glass, ZnO/ITO/Glass, and ITO/Glass substrates by RF magnetron sputtering. The effects of various substrates and heat treatment on the structural and luminous properties were investigated. The films deposited on ZnO/ITO/Glass exhibited superior crystallinity and more enhanced PL and CL properties compared with those on ITO/Glass. The intermediate ZnO layer between phosphor film and ITO contributed to the growing behaviors and the roughening of CaTiO3:Pr phosphor thin films, and consequently, to the excellent luminescence. The luminescent properties of the films were improved by following heat-treatment due to a combination of factors, namely the transformation from amorphous to poly crystalline phases, the activation of the activators, and the elimination of microdefects.
-
Effects of ZnO buffer layer on the luminous properties of thin-film phosphors deposited on ZnO/ITO/Glass substrates
Journal of Vacuum Science and Technology, 2001Co-Authors: Young Jin Kim, Sung Mook Chung, Young Ho Jeong, Yong Eui LeeAbstract:ZnGa2O4:Mn and CaTiO3:Pr thin-film phosphors which emit green and red light, respectively, were deposited on ZnO/ITO/Glass and ITO/Glass substrates by a rf reactive magnetron-sputtering method. To improve photo- and cathodoluminescent properties of the thin-film phosphors, ZnO buffer layers were deposited between the thin-film phosphor and the ITO-coated Glass substrate. A transparent c-axis preferentially oriented ZnO thin-film buffer layer could be obtained on the ITO film, while ITO had an amorphous-like structure. ZnGa2O4:Mn and CaTiO3:Pr thin-film phosphors were used to evaluate the effects of the ZnO buffer layer. The crystal structures of thin-film phosphors deposited on ZnO/ITO/Glass substrates were developed better than those on ITO/Glass, consequently, the former showed photo- and cathodoluminescent intensity at least twice as high as the latter.
Cheng-liang Hsu - One of the best experts on this subject based on the ideXlab platform.
-
Fabrication of Fully Transparent Indium-Doped ZnO Nanowire Field-Effect Transistors on ITO/Glass Substrates
Journal of The Electrochemical Society, 2011Co-Authors: Cheng-liang Hsu, Tsung-ying TsaiAbstract:Fully transparent indium (In)-doped ZnO nanowire field-effect transistors were prepared on a patterned SiO 2 /indium tin oxide (ITO)/SiO 2 /ITO/Glass substrate by reactive evaporation. A crabwise In-doped ZnO nanowire is adopted in photodetectors, with a photocurrent to dark current contrast ratio of only 24.1. Crabwise In-doped ZnO nanowire field-effect transistors performed excellently with a mobility of 85.2 cm 2 V -1 s -1 . The ability to tune n-type conduction and the understanding of the transport properties of crabwise In-doped ZnO nanowires together represents an important step toward the development of ZnO nanowire-based electronic and photoelectronic devices.
-
fabrication of fully transparent indium doped zno nanowire field effect transistors on ITO Glass substrates
Journal of The Electrochemical Society, 2011Co-Authors: Cheng-liang Hsu, Tsung-ying TsaiAbstract:Fully transparent indium (In)-doped ZnO nanowire field-effect transistors were prepared on a patterned SiO 2 /indium tin oxide (ITO)/SiO 2 /ITO/Glass substrate by reactive evaporation. A crabwise In-doped ZnO nanowire is adopted in photodetectors, with a photocurrent to dark current contrast ratio of only 24.1. Crabwise In-doped ZnO nanowire field-effect transistors performed excellently with a mobility of 85.2 cm 2 V -1 s -1 . The ability to tune n-type conduction and the understanding of the transport properties of crabwise In-doped ZnO nanowires together represents an important step toward the development of ZnO nanowire-based electronic and photoelectronic devices.
Sung Mook Chung - One of the best experts on this subject based on the ideXlab platform.
-
Luminescent properties of CaTiO3:Pr thin-film phosphor deposited on ZnO/ITO/Glass substrate
Journal of Luminescence, 2005Co-Authors: Sung Mook Chung, Sang Hyuk Han, Kuk Hyun Song, Eung Soo Kim, Young Jin KimAbstract:Red-emitting CaTiO3:Pr phosphor thin films were deposited on Glass, ZnO/ITO/Glass, and ITO/Glass substrates by RF magnetron sputtering. The effects of various substrates and heat treatment on the structural and luminous properties were investigated. The films deposited on ZnO/ITO/Glass exhibited superior crystallinity and more enhanced PL and CL properties compared with those on ITO/Glass. The intermediate ZnO layer between phosphor film and ITO contributed to the growing behaviors and the roughening of CaTiO3:Pr phosphor thin films, and consequently, to the excellent luminescence. The luminescent properties of the films were improved by following heat-treatment due to a combination of factors, namely the transformation from amorphous to poly crystalline phases, the activation of the activators, and the elimination of microdefects.
-
luminescent properties of catio3 pr thin film phosphor deposited on zno ITO Glass substrate
Journal of Luminescence, 2005Co-Authors: Sung Mook Chung, Sang Hyuk Han, Kuk Hyun Song, Eung Soo Kim, Young Jin KimAbstract:Red-emitting CaTiO3:Pr phosphor thin films were deposited on Glass, ZnO/ITO/Glass, and ITO/Glass substrates by RF magnetron sputtering. The effects of various substrates and heat treatment on the structural and luminous properties were investigated. The films deposited on ZnO/ITO/Glass exhibited superior crystallinity and more enhanced PL and CL properties compared with those on ITO/Glass. The intermediate ZnO layer between phosphor film and ITO contributed to the growing behaviors and the roughening of CaTiO3:Pr phosphor thin films, and consequently, to the excellent luminescence. The luminescent properties of the films were improved by following heat-treatment due to a combination of factors, namely the transformation from amorphous to poly crystalline phases, the activation of the activators, and the elimination of microdefects.
-
Effects of ZnO buffer layer on the luminous properties of thin-film phosphors deposited on ZnO/ITO/Glass substrates
Journal of Vacuum Science and Technology, 2001Co-Authors: Young Jin Kim, Sung Mook Chung, Young Ho Jeong, Yong Eui LeeAbstract:ZnGa2O4:Mn and CaTiO3:Pr thin-film phosphors which emit green and red light, respectively, were deposited on ZnO/ITO/Glass and ITO/Glass substrates by a rf reactive magnetron-sputtering method. To improve photo- and cathodoluminescent properties of the thin-film phosphors, ZnO buffer layers were deposited between the thin-film phosphor and the ITO-coated Glass substrate. A transparent c-axis preferentially oriented ZnO thin-film buffer layer could be obtained on the ITO film, while ITO had an amorphous-like structure. ZnGa2O4:Mn and CaTiO3:Pr thin-film phosphors were used to evaluate the effects of the ZnO buffer layer. The crystal structures of thin-film phosphors deposited on ZnO/ITO/Glass substrates were developed better than those on ITO/Glass, consequently, the former showed photo- and cathodoluminescent intensity at least twice as high as the latter.
