Fabrication and Characterization of Highly Oriented N-Doped ZnO Nanorods by Selective Area Epitaxy

High-quality nitrogen-doped ZnO nanorods have been selectively grown on patterned and bare ZnO templates by the combination of nanoimprint lithography and chemical vapor transport methods. The grown nanorods exhibited uniformity in size and orientation as well as controllable density and surface-to-volume ratio. The structural and optical properties of ZnO nanorods and the behaviour of N dopants have been investigated by means of the scanning electron microscope, photoluminescence (PL) spectra, and Raman scattering spectra. The additional vibration modes observed in Raman spectra of N-doped ZnO nanorods provided solid evidence of N incorporation in ZnO nanorods. The difference of excitonic emissions from ZnO nanorods with varied density and surface-to-volume ratio suggested the different spatial distribution of intrinsic defects. It was found that the defects giving rise to acceptor-bound exciton (A0X) emission were most likely to distribute in the sidewall surface with nonpolar characteristics, while the donor bound exciton (D0X) emission related defects distributed uniformly in the near top polar surface.

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Highly formaldehyde-sensitive, transition-metal doped ZnO nanorods prepared by plasma-enhanced chemical vapor deposition

Sensors and Actuators B Chemical ◽

10.1016/j.snb.2012.03.035 ◽

2012 ◽

Vol 169 ◽

pp. 74-80 ◽

Cited By ~ 91

Author(s):

Peng Hu ◽

Ning Han ◽

Dangwen Zhang ◽

Johnny C. Ho ◽

Yunfa Chen

Keyword(s):

Chemical Vapor Deposition ◽

Transition Metal ◽

Vapor Deposition ◽

Zno Nanorods ◽

Chemical Vapor ◽

Doped Zno ◽

Metal Doped

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Photoluminescence of Ga-doped ZnO nanorods prepared by chemical vapor deposition

Optical Materials ◽

10.1016/j.optmat.2008.03.015 ◽

2008 ◽

Vol 31 (2) ◽

pp. 237-240 ◽

Cited By ~ 17

Author(s):

Liping Zhu ◽

Jiesheng Li ◽

Zhizhen Ye ◽

Haiping He ◽

Xiaojun Chen ◽

...

Keyword(s):

Chemical Vapor Deposition ◽

Vapor Deposition ◽

Zno Nanorods ◽

Chemical Vapor ◽

Doped Zno

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Morphological exploration of chemical vapor–deposited P-doped ZnO nanorods for efficient photoelectrochemical water splitting

Ceramics International ◽

10.1016/j.ceramint.2020.10.237 ◽

2020 ◽

Author(s):

S. Swathi ◽

R. Yuvakkumar ◽

G. Ravi ◽

E. Sunil Babu ◽

Dhayalan Velauthapillai ◽

...

Keyword(s):

Water Splitting ◽

Zno Nanorods ◽

Chemical Vapor ◽

Photoelectrochemical Water Splitting ◽

Chemical Vapor Deposited ◽

Doped Zno

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Optical properties of Na-doped ZnO nanorods grown by metalorganic chemical vapor deposition

Materials Letters ◽

10.1016/j.matlet.2015.08.047 ◽

2015 ◽

Vol 160 ◽

pp. 547-549 ◽

Cited By ~ 6

Author(s):

Meng Lei ◽

Haiping He ◽

Qianqian Yu ◽

Cong Chen ◽

Yangfan Lu ◽

...

Keyword(s):

Optical Properties ◽

Chemical Vapor Deposition ◽

Vapor Deposition ◽

Metalorganic Chemical Vapor Deposition ◽

Zno Nanorods ◽

Chemical Vapor ◽

Doped Zno ◽

Metalorganic Chemical

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Synthesis and Sensing Properties of N-doped ZnO Nanorod Arrays on Quartz

MRS Proceedings ◽

10.1557/proc-1253-k05-29 ◽

2010 ◽

Vol 1253 ◽

Author(s):

Boqian Yang ◽

Xiaoyan Peng ◽

Hongxin Zhang ◽

Peterxian Feng ◽

Marc Achermann

Keyword(s):

Photoelectron Spectroscopy ◽

Zno Nanorods ◽

Zno Nanorod ◽

Nanorod Arrays ◽

Zno Nanorod Arrays ◽

X Ray ◽

Doped Zno ◽

High Concentrations ◽

Diffraction Patterns ◽

Raman Scattering Spectra

AbstractUsing different pressures of nitrogen, N-doped ZnO nanorod arrays of various densities have been synthesized on quartz substrates by pulsed laser deposition techniques. The nanorods grow preferentially perpendicular to the quartz surface. X-ray diffraction patterns revealed some degradation of the crystal structure at elevated nitrogen pressures. High concentrations of nitrogen doping in ZnO nanorods were estimated by X-ray photoelectron spectroscopy. Raman scattering spectra confirmed the wurtzite structure of N-doped ZnO nanorods. A prototype sensor based on the N-doped ZnO nanorod arrays demonstrates a linear dependence of the conductivity with operating temperature and pressure of a test gas pollutant.

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Structural and Optical Properties of Fe-Doped ZnO Nanorods

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.858.151 ◽

2013 ◽

Vol 858 ◽

pp. 151-158

Author(s):

Siti Nor Qurratu Aini Abd Aziz ◽

Swee Yong Pung ◽

Zainovia Lockman ◽

Nur Atiqah Hamzah

Keyword(s):

Average Length ◽

Spray Pyrolysis Technique ◽

Zno Nanorods ◽

Chemical Vapor ◽

Horizontal Tube ◽

Areal Density ◽

Zinc Oxide Nanorods ◽

Ex Situ ◽

Aerosol Generator ◽

Doped Zno

Fe-doped zinc oxide nanorods (ZnO NRs) were synthesized by ex-situ doping using spray pyrolysis technique. In this work, the undoped ZnO NRs were pre-synthesized via chemical vapor deposition using Zn powder and oxygen gas at 650 °C. The average length and diameter of the ZnO NRs are 4.1 ± 1.1 μm and 553.1 ± 89.6 nm, respectively. The average aspect ratio and areal density of ZnO NRs is 8.2 ± 2.9 and 6.2 ± 1.1 NRs/um2, respectively. Subsequently, these undoped ZnO NRs were kept in the horizontal tube furnace, whereas the dopant solution (FeCl3) of 0.05 M concentration was kept in the aerosol generator, which was located outside of the furnace. The Fe aerosol was flowed into the reactor when substrate temperature reached 650 °C to achieve ex-situ doping. At this temperature, some of the Fe atoms were driven into the NRs, forming Fe-doped ZnO NRs particularly at their outer layer. The presence of Fe 2p1/2 and Fe 2p3/2 peaks at 722.3 eV and 705.7 eV in XPS analysis indicates that Fe atoms were in the local structure of FeO. The Fe-doped ZnO NRs have poor crystal quality attributed to the low IUV/IVis ratio in room temperature PL analysis.

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Fabrication and Optical Properties of Mg-Doped ZnO Nanorods by Chemical Vapor Deposition

Science of Advanced Materials ◽

10.1166/sam.2014.1743 ◽

2014 ◽

Vol 6 (3) ◽

pp. 500-504 ◽

Cited By ~ 5

Author(s):

R. R. Zhao ◽

X. Q. Wei ◽

M. Ding ◽

X. J. Xu

Keyword(s):

Optical Properties ◽

Chemical Vapor Deposition ◽

Vapor Deposition ◽

Zno Nanorods ◽

Chemical Vapor ◽

Doped Zno ◽

Mg Doped

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Novel Inorganic DC Lateral Thin Film Electroluminescent Devices Composed of ZnO Nanorods and ZnS Phosphor

MRS Proceedings ◽

10.1557/proc-1144-ll19-21 ◽

2008 ◽

Vol 1144 ◽

Cited By ~ 1

Author(s):

Tomomasa Satoh ◽

Yuki Matsuzawa ◽

Hiroaki Koishikawa ◽

Takashi Hirate

Keyword(s):

Thin Film ◽

Zno Nanorods ◽

Composite Layer ◽

Chemical Vapor ◽

Driving Voltage ◽

Electroluminescent Devices ◽

Dc Voltage ◽

Thermal Chemical Vapor Deposition ◽

Doped Zno ◽

Beam Deposition

ABSTRACTA novel inorganic thin-film electroluminescence (TFEL) device exhibiting bright EL emission when driven by a low DC voltage is demonstrated. The DC-TFEL device is based on a composite layer in which aluminum-doped ZnO nanorods are vertically embedded in ZnS:Mn as an EL phosphor. The DC driving voltage is then applied laterally to the composite layer via two side electrodes set 3.5 mm apart. The aluminum-doped ZnO nanorods were synthesized on a glass substrate by low-pressure thermal chemical vapor deposition combined with laser ablation, and the composite layer was formed by electron-beam deposition of ZnS:Mn onto the ZnO nanorods. The thickness of the composite layer was about 160 nm. After electrical modification to breakdown a basal conduction ZnO path, the lateral DC-TFEL device exhibited bright EL emission without avalanche breakdown, achieving a luminance of 747 cd/m2 at 4200 V with a luminous efficiency of 9.2×10−3 lm/W.

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