Cited 14 time in webofscience Cited 15 time in scopus

Thermal annealing effects on the dynamic photoresponse properties of Al-doped ZnO nanowires network

Title
Thermal annealing effects on the dynamic photoresponse properties of Al-doped ZnO nanowires network
Authors
Kim, KP[Kim, Kang-Pil]Chang, D[Chang, Daeic]Lim, SK[Lim, Sang Kyoo]Lee, SK[Lee, Soo-Keun]Lyu, HK[Lyu, Hong-Kun]Hwang, DK[Hwang, Dae-Kue]
DGIST Authors
Kim, KP[Kim, Kang-Pil]; Chang, D[Chang, Daeic]; Lim, SK[Lim, Sang Kyoo]; Lee, SK[Lee, Soo-Keun]; Lyu, HK[Lyu, Hong-Kun]; Hwang, DK[Hwang, Dae-Kue]
Issue Date
2011-11
Citation
Current Applied Physics, 11(6), 1311-1314
Type
Article
Article Type
Article
Keywords
Al-Doped ZnOAnnealingAnnealing TemperaturesAZO NanowiresE-Beam LithographyFabricationFabrication ProcessLithographyLow CostsNanowire NetworksNanowiresNetwork-BasedOptoelectronic DevicesPhotocurrent DecayPhotodetectorsPhotoresponsesPotential BarriersThermal Annealing EffectsUV IlluminationsUV PhotodetectorsUV SourcesZinc Oxide
ISSN
1567-1739
Abstract
In this study, UV photodetectors based on a network of aluminium-doped zinc oxide (AZO) nanowires were manufactured at a low cost; for this purpose, a fast and simple fabrication process that involved dropping nanowires dispersion solution was employed instead of the conventional e-beam lithography process that is used to manufacture single nanowire-based UV photodetectors. It was demonstrated that nanowire network-based UV photodetectors provide a much faster UV photoresponse than conventional single nanowire-based UV photodetectors. The fast UV photoresponse of the fabricated UV photodetector can be attributed to the fact that the potential barriers formed in the nanowire network junctions effectively block the flow of electrons during the process of photocurrent decay. Furthermore, the UV photoresponse under illumination by a 254 nm UV source was studied as a function of the annealing temperature of the AZO nanowires network at a bias of 5 V. The fabricated UV photodetector showed the fastest response of 2 s to UV illumination in air when the sample was annealed in air for 1 h at 300 °C. © 2011 Elsevier B.V. All rights reserved.
URI
http://hdl.handle.net/20.500.11750/2483
DOI
10.1016/j.cap.2011.03.065
Publisher
Elsevier B.V.
Files:
There are no files associated with this item.
Collection:
Convergence Research Center for Solar Energy1. Journal Articles
ETC1. Journal Articles
Division of Nano∙Energy Convergence Research1. Journal Articles
Division of IoT∙Robotics Convergence Research1. Journal Articles


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