Journal ArticleDOI
Diffusion-Driven Al-Doping of ZnO Nanorods and Stretchable Gas Sensors Made of Doped ZnO Nanorods/Ag Nanowires Bilayers.
Reads0
Chats0
TLDR
The NO2-sensing mechanism of Al-doped ZnO nanorod/silver nanowire bilayer sensors is discussed on the basis of a synergistic interplay of Al and silver nanowires.Abstract:
A crystal-damage-free nanodoping method, which utilized the vacuum drive-in diffusion of Al into ZnO nanorods, was developed. In this method, vertical ZnO nanorod arrays that were grown by chemical bath deposition beforehand were deposited with Al thin film and subsequently heat-treated under a high vacuum. At an optimum condition, the surface Al atoms were completely diffused into ZnO nanorods, resulting in Al-doped ZnO nanorods. Stretchable gas sensors were fabricated by sequentially drop-casting the Al-doped ZnO nanorods and silver nanowires on polydimethylsiloxane substrate. The resistance and response of the sensor could be optimized through the elaborate control of relative densities of Al-doped ZnO nanorods and silver nanowires. The sensor showed a high response of 32.3% to 10 ppm of NO2 gas at room temperature, even under a large strain of 30%. The NO2-sensing mechanism of Al-doped ZnO nanorod/silver nanowire bilayer sensors is discussed on the basis of a synergistic interplay of Al-doped ZnO nanorods and silver nanowires.read more
Citations
More filters
Journal ArticleDOI
Reduced Graphene Oxide/Mesoporous ZnO NSs Hybrid Fibers for Flexible, Stretchable, Twisted, and Wearable NO2 E-Textile Gas Sensor.
Weiwei Li,Ruosong Chen,Wenzhi Qi,Li Cai,Yilin Sun,Mengxing Sun,Chuang Li,Xiaokuo Yang,Lan Xiang,Dan Xie,Tian-Ling Ren +10 more
TL;DR: In this article, an easy-handing, low-cost, light-weight, and conformable compatibility with clothes in wearable and portable smart electronics is presented for e-textiles.
Journal ArticleDOI
Doped Zinc Oxide Nanoparticles: Synthesis, Characterization and Potential Use in Nanomedicine.
TL;DR: The obtained results confirm that the doping of ZnO NPs represents a valuable tool to improve the corresponding biomedical properties with respect to the undoped counterpart, and suggest that a new application of X-ray crystalline nanoparticles in nanomedicine can be envisioned.
Journal ArticleDOI
Advances in Doped ZnO Nanostructures for Gas Sensor.
TL;DR: In this review, the effects of different types of doping on morphology, crystal structure, band gap and depletion layer of ZnO materials are comprehensively discussed and reasonable insight is put forward for designing efficient n‐type ZnOs based semiconductor oxide sensing materials.
Journal ArticleDOI
Low-temperature operating ZnO-based NO2 sensors: a review
Jingyue Xuan,Guodong Zhao,Meiling Sun,Fu-Chao Jia,Xiaomei Wang,Tong Zhou,Guangchao Yin,Bo Liu +7 more
TL;DR: In this paper, the authors reviewed the latest research progress of low-temperature ZnO nanomaterial-based NO2 gas sensors, including morphology modification, noble metal decoration, additive doping, heterostructure sensitization, two-dimensional material composites, and light activation.
Journal ArticleDOI
Silver nanowire networks with preparations and applications: a review
TL;DR: In this article, the main challenges and prospects of the AgNWs network in future applications are briefly evaluated, and the latest progress to AgNW network preparation and applications are reviewed in terms of manufacturing process, performance evaluation and enhancement, typical applications in this paper.
References
More filters
Journal ArticleDOI
Fabrication and ethanol sensing characteristics of ZnO nanowire gas sensors
TL;DR: In this paper, ZnO nanowires gas sensors were fabricated with microelectromechanical system technology and ethanol-sensing characteristics were investigated, and the sensor exhibited high sensitivity and fast response to ethanol gas at a work temperature of 300°C.
Journal ArticleDOI
Gas sensing properties of defect-controlled ZnO-nanowire gas sensor
M. W. Ahn,Kyung Soo Park,J. H. Heo,Jae Gwan Park,Dong Wan Kim,Kyoung Jin Choi,Jong Heun Lee,Seong-Hyeon Hong +7 more
TL;DR: In this article, the effect of oxygen-vacancy-related defects on gas-sensing properties of ZnO-nanowire gas sensors was investigated and it was shown that the sensitivity of the sensors to NO2 gas is linearly proportional to the photoluminescence intensity.
Journal ArticleDOI
Al-doped ZnO thin films as methanol sensors
P. P. Sahay,R. K. Nath +1 more
TL;DR: Al-doped zinc oxide (ZnO) thin films were prepared by chemical spray pyrolysis technique and structural analysis of the films revealed that all the films are of polycrystalline zinc oxide in nature, possessing hexagonal wurtzite structure with (0,0,2) preferred orientation.
Journal ArticleDOI
Novel hydrogen gas sensor based on single ZnO nanorod
Oleg Lupan,Guangyu Chai,Lee Chow +2 more
TL;DR: In this paper, a cost-effective and fast synthesis route for ZnO one-dimensional nanorod using an aqueous-based approach in a reactor was reported.
Journal ArticleDOI
MOF-Based Membrane Encapsulated ZnO Nanowires for Enhanced Gas Sensor Selectivity
TL;DR: The optimized ZnO@ZIF-8-based nanocomposite sensor shows markedly selective response to H2 in comparison with the pristine ZnNO nanowires sensor, while showing the negligible sensing response to C7H8 and C6H6.