Nano-ZnO film preparation at low temperature and the optical indices calculation

Abstract. In this article, nano-ZnO films were deposited on SiO2/Si (100) substrates by RF (radio frequency) magnetron sputtering using high purity (99.99%) ZnO target. The effects of deposition time and annealing temperature have been investigated. XRD (X-ray diffraction) and FSEM (Field Emission Scanning Electron Microscopy) were employed to characterize the quality of the films. The results show that the ZnO film with thickness of 600nm annealed at 900°C has higher quality of both C-axis orientation and crystallization. And for the Zone film with thickness of 300nm annealed at 850°C, the quality of both C-axis orientation and crystallization is higher than that annealed at 900°C and 950°C.

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Research on the Properties of Low Temperature and Anti-UV of Asphalt with Nano-ZnO/Nano-TiO2/Copolymer SBS Composite Modified in High-Altitude Areas

Advances in Materials Science and Engineering ◽

10.1155/2020/9078731 ◽

2020 ◽

Vol 2020 ◽

pp. 1-15 ◽

Cited By ~ 2

Author(s):

Xiangbing Xie ◽

Tao Hui ◽

Yaofei Luo ◽

Han Li ◽

Guanghui Li ◽

...

Keyword(s):

Surface Modification ◽

High Temperature ◽

Low Temperature ◽

Orthogonal Test ◽

Nano Zno ◽

Carbonyl Index ◽

Modified Asphalt ◽

Temperature Performance ◽

Before And After ◽

Sbs Modified Asphalt

Strong ultraviolet light and low-temperature are the typical environmental characteristics in high-altitude areas. The performance of SBS-modified asphalt in the above environmental characteristics needs further study. To improve the resistance ultraviolet (UV) ageing and low-temperature performance of copolymer- (SBS-) modified asphalt, an SBS-modified asphalt containing nano-ZnO and nano-TiO2 is proposed. In this paper, nano-ZnO, nano-TiO2, and SBS were used as modifiers with the silane coupling agent (KH-560) as the nanomaterial surface modification. The orthogonal test table was used to analyse the effects of the three modifiers on the physical properties of modified asphalt at different dosages. On this basis, the physical properties, low-temperature properties, and ageing indices (carbonyl index and sulfoxide index) were studied for base asphalt, SBS-modified asphalt, nano-ZnO/SBS-modified asphalt, and nano-ZnO/nano-TiO2/SBS composite-modified asphalt before and after photoaging. The content changes of characteristic elements (Zn and Ti) in the nano-ZnO/nano-TiO2/SBS composite-modified asphalt before and after ageing were studied by scanning electron microscopy with energy dispersive spectroscopy (SEM/EDS), and the UV ageing mechanism was revealed. The results indicate that two nanoparticles show the best compatibility with asphalt after surface modification and can improve the binding ability between SBS and base asphalt. The orthogonal test analysis shows that nano-ZnO has a highly significant effect on the low- and high-temperature performance of the nano-ZnO/nano-TiO2/SBS composite-modified asphalt, and nano-TiO2 has a significant effect on the high-temperature performance. Three optimal composite-modified systems for base asphalt including 4% nano-ZnO/1.5% nano-TiO2/3.2% SBS were proposed and had the best antiaging ability. Compared with the sulfoxide index, the carbonyl index changed most obviously before and after ageing. Additionally, the results reveal that nano-TiO2 has a good absorption effect at a wavelength of 365 nm (ultraviolet light), while nano-ZnO is liable to photolysis, and its activity decreases at this wavelength.

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High-performance flexible Ag nanowire electrode with low-temperature atomic-layer-deposition fabrication of conductive-bridging ZnO film

nano Online ◽

10.1515/nano.11671_2015.161 ◽

2016 ◽

Author(s):

Ya-Hui Duan ◽

Yu Duan ◽

Ping Chen ◽

Ye Tao ◽

Yong-Qiang Yang ◽

...

Keyword(s):

Low Temperature ◽

Atomic Layer Deposition ◽

High Performance ◽

Atomic Layer ◽

Zno Film ◽

Layer Deposition ◽

Ag Nanowire

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The low temperature process design for Al doped ZnO film synthesis on polymer

Surface and Coatings Technology ◽

10.1016/j.surfcoat.2006.07.147 ◽

2007 ◽

Vol 201 (9-11) ◽

pp. 5035-5038 ◽

Cited By ~ 25

Author(s):

Chang S. Moon ◽

Yun M. Chung ◽

Woo S. Jung ◽

Jeon G. Han

Keyword(s):

Low Temperature ◽

Process Design ◽

Zno Film ◽

Doped Zno ◽

Film Synthesis ◽

Low Temperature Process

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Electrochemistry of hemoglobin entrapped in a Nafion/nano-ZnO film on carbon ionic liquid electrode

Bioelectrochemistry ◽

10.1016/j.bioelechem.2008.11.001 ◽

2009 ◽

Vol 74 (2) ◽

pp. 295-300 ◽

Cited By ~ 57

Author(s):

Wei Sun ◽

ZiQin Zhai ◽

DanDan Wang ◽

ShuFeng Liu ◽

Kui Jiao

Keyword(s):

Ionic Liquid ◽

Carbon Ionic Liquid Electrode ◽

Zno Film ◽

Nano Zno ◽

Liquid Electrode

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EFFECTS OF Au ON THE GROWTH OF ZnO NANOSTRUCTURES ON Si BY MOCVD

Functional Materials Letters ◽

10.1142/s1793604713500446 ◽

2013 ◽

Vol 06 (04) ◽

pp. 1350044

Author(s):

CHEN CONG ◽

LU YANG FAN ◽

HE HAI PING ◽

WU KE WEI ◽

YE ZHI ZHEN

Keyword(s):

Low Temperature ◽

Au Nanoparticles ◽

Critical Role ◽

Zno Nanorods ◽

Crystalline Quality ◽

Organic Chemical ◽

Zno Nanostructures ◽

Gaseous Species ◽

Nano Zno

The effects of Au on the growth of ZnO nanostructures on Si by metal organic chemical vapor deposition (MOCVD) at a relatively low temperature (450°C) were investigated. The experimental results showed that Au nanoparticles played a critical role during the growth of the ZnO nanostructures and affected their morphology and optical properties. It was found that Au nanoparticles particularly affected the nucleation of ZnO nanostructures during the growth process and the Au -assisted growth mechanism of ZnO nanostructures should be ascribed to the vapor–solid (VS) mechanism. The formation of a nanoneedle may be attributed to a more reactive interface between Au and ZnO , which leads to more zinc gaseous species absorbed near the interface. Different nucleation sites on ZnO nuclei resulted in the disorder of ZnO nanoneedles. Moreover, the crystalline quality of nano- ZnO was improved due to the presence of Au , according to the smaller full width at half maximum (FWHM) of the low-temperature exciton emission. We confirmed that ZnO nanoneedles showed better crystalline quality than ZnO nanorods through the HRTEM images and the SAED patterns. The reason for the improvement of the crystalline quality of nano- ZnO may be due to the less lattice mismatch.

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HIGH-QUALITY INTRINSIC ZnO FILM FOR THE APPLICATION OF SOLAR CELL GROWN BY ICP-ASSISTED REACTIVE DC MAGNETRON SPUTTERING AT LOW TEMPERATURE

Surface Review and Letters ◽

10.1142/s0218625x07010664 ◽

2007 ◽

Vol 14 (06) ◽

pp. 1083-1087

Author(s):

X. B. XU ◽

S. M. HUANG ◽

Y. W. CHEN ◽

Z. SUN ◽

S. Y. HUANG

Keyword(s):

Solar Cell ◽

Low Temperature ◽

Magnetron Sputtering ◽

Inductively Coupled Plasma ◽

Visible Range ◽

Zno Film ◽

Dc Magnetron Sputtering ◽

Working Pressure ◽

Solar Cell Application ◽

Inductively Coupled

Intrinsic zinc oxide (i- ZnO ) film was prepared for CuInSe 2 (CIS) solar cell application [L. Stolt and J. Hedstrom, Appl. Phys. Lett.62 (1993) 8; D. Rudmann, Ph.D. Thesis, University of Basel, Basel, (2004)] on glass substrate by inductively coupled plasma (ICP)-assisted DC magnetron sputtering and under a quite low temperature of 50°C. The sputtering was done in an Ar and O 2 gas mixture and a ceramic ZnO target was used. The microstructures of the film were investigated by X-ray diffractometer and scanning electron microscope. It was shown that all of the films had a c-axis preferred orientation perpendicular to the substrate. In our work, film with resistivity of 7 × 108Ω· cm and transmittance of about 80% in the visible range was prepared under the conditions of 4 mTorr working pressure and 50°C temperature.

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