The Effect of N Doping Amount on Zn/N-Codoped Composite Films by Vacuum Deposition

2015 ◽  
Vol 1094 ◽  
pp. 234-237
Author(s):  
Shu Juan Zhang ◽  
Ming Sheng Li ◽  
Yi Duo ◽  
Shu Qiang Zeng
Keyword(s):  
Crystal Structure ◽  
Absorption Edge ◽  
Composite Films ◽  
Film Surface ◽  
Annealing Treatment ◽  
Film Structure ◽  
Doping Amount ◽  
N Doping ◽  
Surface Morphologies ◽  
Absorption Edges

The Zn/N co-doped composite thin films were deposited on medical glass slide by synthesis technique of arc ion plating and magnetron sputtering. The influence of N doping amount, annealing treatment on films properties were investigated. Film structure, surface morphologies and optical properties were measured with XRD, SEM and UV-VIS transmittance spectroscope. The results show that the absorption edges of the composite films increasing with the rising N doping amount. The greatest absorption edges of the composite films can reach 550nm, but the transmittance decreasing with the N doping amount increasing obviously. The absorption edge of the films decreased in different degree after annealing treatment. The annealing treatment reduces the absorption edge and decreases the N doping amount of Zn/N-codoped composite. The crystal structure changed obviously after annealing treatment, the crystal structure were most ZnTiO3 before annealing treatment, The ZnTiO3 diffraction peak decreases with increasing the N doping amount, the film surface grain changed significantly after annealing treatment, which is corresponding to the XRD result, the crystal particle got further crystallization.

The Research of N/C-Codoped TiO2 Films Deposited by Arc Ion Plating

2014 ◽  
Vol 952 ◽  
pp. 55-58
Author(s):  
Shu Juan Zhang ◽  
Ming Sheng Li ◽  
Chong Cao ◽  
Lin Xia Zheng
Keyword(s):  
Absorption Edge ◽  
Annealing Treatment ◽  
Film Structure ◽  
Negative Bias ◽  
Arc Ion Plating ◽  
Ion Plating ◽  
Surface Morphologies ◽  
Co Doped ◽  
Medical Glass ◽  
Absorption Edges

The N/C co-doped TiO2thin films were successfully deposited on medical glass slide by pulsed negative bias arc ion plating. The influence of pulsed negative bias, annealing temperature on films properties was investigated. Film structure, surface morphologies and optical properties were measured with XRD, SEM and UV-VIS transmittance spectroscope. The results show that the most absorption edges of the as-deposited films increase with the rising of the pulse negative bias, and the maximum of 540 nm is achieved under-600V bias. The films absorption edges increase in different degree after annealing at 400°Cfor 2h and 4h, and the best extension can increase 46nm after annealing. The interaction of the annealing treatment and bias functions enhance the N and C reaction activities and extend absorption edge. The greatest absorption edge dater of the co-doped TiO2films under the negative pulse bias for 0V can reach 550nm after the annealing at 400°Cfor 2h. The crystal morphology become inconspicuously with the bias increasing from 0V to-300V, which is corresponding to the XRD result, the anatase diffraction peaks weaken obviously.

The Research of the Zn2TiO4 Films Grown by Magnetron Sputtering

2014 ◽  
Vol 900 ◽  
pp. 415-418 ◽  
Author(s):  
Shu Juan Zhang ◽  
Ming Sheng Li ◽  
Shang Lin Feng ◽  
Chong Cao
Keyword(s):  
Grain Size ◽  
Magnetron Sputtering ◽  
Composite Films ◽  
Annealing Treatment ◽  
Film Structure ◽  
Surface Films ◽  
Growing Up ◽  
Surface Morphologies ◽  
Medical Glass ◽  
Absorption Edges

The uniform and transparent Zn2TiO4series thin films were successfully deposited on medical glass slide by magnetron sputtering. The influences of the Zn-doped quantity and annealing treatment on films properties were investigated. Film structure, surface morphologies and optical properties were measured with XRD, SEM and UV-VIS transmittance spectroscope. The results show that the Zn-doped quantity and annealing treatment have influence on the absorption edges. The absorption edges of the films can increase 10nm after annealing treatment. The intensity of c-series ZnTiO3diffraction peaks is higher, which may be that the grain size is bigger and the crystallization is complete. The annealing treatment not only growing up grain size of composite films, but also the surface films have tiny crack phenomenon.

The Research of the C-Doped TiO2 Films Deposited by Arc Ion Plating

2012 ◽  
Vol 182-183 ◽  
pp. 292-296
Author(s):  
Shu Juan Zhang ◽  
Ming Sheng Li ◽  
Zhi Qin Chen ◽  
Yong Zhong Fan
Keyword(s):  
Annealing Treatment ◽  
Catalytic Performance ◽  
Film Structure ◽  
Negative Bias ◽  
Arc Ion Plating ◽  
Ion Plating ◽  
High Bias ◽  
Micro Morphology ◽  
Surface Morphologies ◽  
Absorption Edges

The uniform and transparent C-doped TiO2thin films were successfully deposited on medical glass slide by arc ion plating. The influences of the C-doped quantity, pulsed negative bias and annealing treatment on films properties were investigated. Film structure, surface morphologies and optical properties were measured with XRD, SEM and UV-VIS transmittance spectroscope. Photo-catalytic performance of the films was evaluated by degrading methyl orange. The results show that the C-doped quantity and annealing treatment have important influence on the absorption edges. The effect of annealing treatment is similar to that of the increasing the C-doped quantity, and they can enhance the C doping and extends the absorption edge. The absorption edges of the films increase with the rising of the C-doped quantity, and all the films absorption edges increase after annealing at 400°Cfor 4h, and the best extending can increase 20nm after annealing. Along with the negative bias increasing, the intensity of rutile diffraction peak increases, but the anatase decreases. The micro-morphology and crystal structure of different C-doped quantity are mutually correspond. The roughness and grain size of TiO2films surface decreases significantly with the negative bias increasing. The crystal grains become even and fine, the high bias films surface micro-morphology has rice-like granular shape.

Influence of Annealing Treatment on N-Doped TiO2 Films Deposited by Pulsed Negative Bias Arc Ion Plating

2012 ◽  
Vol 482-484 ◽  
pp. 1105-1110
Author(s):  
Shu Juan Zhang ◽  
Ming Sheng Li ◽  
Zhi Qin Chen ◽  
Yong Zhong Fan
Keyword(s):  
Thin Films ◽  
Grain Size ◽  
Annealing Temperature ◽  
Annealing Treatment ◽  
Catalytic Performance ◽  
Film Structure ◽  
Negative Bias ◽  
Arc Ion Plating ◽  
Ion Plating ◽  
Absorption Edges

The N-doped TiO2thin films were deposited on medical glass slide by pulsed negative bias arc ion plating. The influence of pulsed negative bias, annealing temperature and time on films properties was investigated. Film structure, surface morphologies and optical properties were measured with XRD, SEM and UV-VIS transmittance spectroscope. Photo-catalytic performance of the films was evaluated by degrading methyl orange. The results show that the absorption edges of the as-deposited films increase with the rising of the pulse negative bias, and the maximum of 550 nm is achieved under -600V bias. The films absorption edges increase in different degree after annealing at 400°Cand 500°Cfor 2h, and the best extending can increase 22nm after annealing. The diffraction peak intensity and surface grain size increase with increasing the annealing temperature and time. The grain size of films after annealing at 400°C for 4h is largest of all the films. The pulsed negative bias and annealing treatment not only indecrease TiO2thin films the UV catalytic performance, but also extend the catalytic properties to the sunlight.

Effects of Pulsed Negative Bias and Current Density on Properties of N-Doped TiO2 Films Deposited by Arc Ion Plating

2012 ◽  
Vol 476-478 ◽  
pp. 2357-2362
Author(s):  
Shu Juan Zhang ◽  
Ming Sheng Li ◽  
Zhi Qin Chen ◽  
Yong Zhong Fan
Keyword(s):  
Current Density ◽  
Absorption Edge ◽  
Visible Region ◽  
Film Surface ◽  
Catalytic Performance ◽  
Film Structure ◽  
Negative Bias ◽  
Arc Ion Plating ◽  
Ion Plating ◽  
Arc Current

The N-doped TiO2thin films of different pulsed negative bias and different current density were deposited on medical glass slide by arc ion plating. The influence of pulsed substrate bias and arc current on film properties was investigated by varying pulsed negative biases from 0 V to−600V and arc current from 40A to 60A. Film structure, surface morphologies and optical properties were measured with XRD, SEM and UV-VIS transmittance spectroscope. Photo-catalytic performance of the films was evaluated by degrading methyl orange. The results show that the N-doped TiO2films absorption edge successfully moved to 550nm and the films had better visible light response. Applying the negative pulse bias extended the absorption edge 5 nm - 40 nm, the absorption edge shifted towards the visible region with increasing arc current. The annealing treatment had a great impact on extending the absorption edge of the lower arc current, and the best extending can increase 64nm after annealing. The film surface roughness decreased with the increase of pulse negative bias, and the film surface grain size increased significantly after annealing. The N-doped TiO2film not only reduced the UV catalytic performance, but also extended its catalytic properties to the sun light.

scholarly journals Ammonia Gas Sensing Characteristic of P3HT-rGO-MWCNT Composite Films

2021 ◽  
Vol 11 (15) ◽  
pp. 6675
Author(s):  
Tran Si Trong Khanh ◽  
Tran Quang Trung ◽  
Le Thuy Thanh Giang ◽  
Tran Quang Nguyen ◽  
Nguyen Dinh Lam ◽  
...  
Keyword(s):  
Response Time ◽  
Gas Sensor ◽  
Gas Sensing ◽  
Composite Films ◽  
Weight Ratio ◽  
Film Surface ◽  
Relative Sensitivity ◽  
Ammonia Gas ◽  
Casting Technique ◽  
Multi Walled Carbon Nanotubes

In this work, the P3HT:rGO:MWCNTs (PGC) nanocomposite film applied to the ammonia gas sensor was successfully fabricated by a drop-casting technique. The results demonstrated that the optimum weight ratio of the PGC nanocomposite gas sensor is 20%:60%:20% as the weight ratio of P3HT:rGO:MWCNTs (called PGC-60). This weight ratio leads to the formation of nanostructured composites, causing the efficient adsorption/desorption of ammonia gas in/out of the film surface. The sensor based on PGC-60 possessed a response time of 30 s, sensitivity up to 3.6% at ammonia gas concentration of 10 ppm, and relative sensitivity of 0.031%/ppm. These results could be attributed to excellent electron transportation of rGO, the main adsorption activator to NH3 gas of P3HT, and holes move from P3HT to the cathodes, which works as charge “nano-bridges” carriers of Multi-Walled Carbon Nanotubes (MWCNTs). In general, these three components of PGC sensors have significantly contributed to the improvement of both the sensitivity and response time in the NH3 gas sensor.

scholarly journals Fabrication, N-doping Mechanism and Evaluation of N-doped TiO2 Thin Films Based on Laser Ablation Method

2009 ◽  
Vol 2 (1) ◽  
pp. 17-23 ◽  
Author(s):  
S. Somekawa ◽  
Y. Kusumoto ◽  
H. Yang ◽  
M. Abdulla-Al-Mamun ◽  
B. Ahmmad
Keyword(s):  
Crystal Structure ◽  
Methylene Blue ◽  
Photocatalytic Activity ◽  
Laser Ablation ◽  
Anatase Phase ◽  
Rutile Phase ◽  
Laser Ablation Method ◽  
Dye Decomposition ◽  
N Doping ◽  
Keywords Laser

The relation among the change of the crystal structure, the amount of doped N and the photocatalytic activity for the decomposition of methylene blue was studied. The N-doping was promoted by the change of the crystal structure from the rutile phase to the anatase phase. The photocatalytic activity for the decomposition of methylene blue was enhanced by an increase in the amount of anatase crystals and doped N. Keywords: Laser ablation; N-doping process; Crystal change; N-doped TiO2 thin film; Dye decomposition. © 2010 JSR Publications. ISSN: 2070-0237 (Print); 2070-0245 (Online). All rights reserved. DOI: 10.3329/jsr.v2i1.2992        J. Sci. Res. 2 (1), 17-23 (2010) 

scholarly journals Fabrication of Lignin-Based Nano Carbon Film-Copper Foil Composite with Enhanced Thermal Conductivity

Nanomaterials ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 1681 ◽  
Author(s):  
Bin Luo ◽  
Mingchao Chi ◽  
Qingtong Zhang ◽  
Mingfu Li ◽  
Changzhou Chen ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Thermal Management ◽  
Copper Foil ◽  
Infrared Imaging ◽  
Carbon Film ◽  
Composite Films ◽  
Annealing Treatment ◽  
Thermal Infrared Imaging ◽  
Nano Carbon ◽  
Enhanced Thermal Conductivity

Technical lignin from pulping, an aromatic polymer with ~59% carbon content, was employed to develop novel lignin-based nano carbon thin film (LCF)-copper foil composite films for thermal management applications. A highly graphitized, nanoscale LCF (~80–100 nm in thickness) was successfully deposited on both sides of copper foil by spin coating followed by annealing treatment at 1000 °C in an argon atmosphere. The conditions of annealing significantly impacted the morphology and graphitization of LCF and the thermal conductivity of LCF-copper foil composite films. The LCF-modified copper foil exhibited an enhanced thermal conductivity of 478 W m−1 K−1 at 333 K, which was 43% higher than the copper foil counterpart. The enhanced thermal conductivity of the composite films compared with that of the copper foil was characterized by thermal infrared imaging. The thermal properties of the copper foil enhanced by LCF reveals its potential applications in the thermal management of advanced electronic products and highlights the potential high-value utility of lignin, the waste of pulping.

scholarly journals Influence of the Sputtering Technique and Thermal Annealing on YSZ Thin Films for Oxygen Sensing Applications

Coatings ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 1165
Author(s):  
Emilio Paz Alpuche ◽  
Pascal Gröger ◽  
Xuetao Wang ◽  
Thomas Kroyer ◽  
Stefanos Fasoulas
Keyword(s):  
Thin Films ◽  
Gas Sensors ◽  
Electronic Conductivity ◽  
Film Surface ◽  
Annealing Treatment ◽  
Thin Film Surface ◽  
Sensing Applications ◽  
Partial Pressures ◽  
Sensor Current ◽  
Oxygen Gas

Yttria-stabilized zirconia (YSZ) thin films were deposited using direct current (reactive and metallic) and radio frequency magnetron sputtering. The effect of the deposition technique and annealing treatment on the microstructure and crystallinity of the thin films was assessed. Using the films produced in this work, oxygen gas sensors were built and their performance under vacuum conditions was evaluated. All the films exhibited a cubic crystalline structure after a post-deposition thermal treatment, regardless of the sputtering technique. When the annealing treatment surpassed 1000 °C, impurities were detected on the thin film surface. The oxygen gas sensors employing the reactive and oxide-sputtered YSZ thin films displayed a proportional increase in the sensor current as the oxygen partial pressure was increased in the evaluated pressure range (5 × 10−6 to 2 × 10−3 mbar). The sensors which employed the metallic-deposited YSZ films suffered from electronic conductivity at low partial pressures.

Sign in / Sign up

Export Citation Format

Share Document