Controlled synthesis of patterned W sub(18)O sub(49) nanowire vertical-arrays and improved field emission performance by in situplasma treatment

W sub(18)O sub(49) nanowires have been intensively studied in recent years due to their good field emission (FE) performances. However, now their development has encountered difficulties, i.e., their emission uniformity is not good enough for high resolution field emission display (FED) applications...

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Bibliographic Details
Published in:Journal of materials chemistry. C, Materials for optical and electronic devices Materials for optical and electronic devices, 2013-04, Vol.1 (19), p.3217-3225
Main Authors: Liu, Fei, Guo, Tongyi, Xu, Zhuo, Gan, Haibo, Li, Lifang, Chen, Jun, Deng, Shaozhi, Xu, Ningsheng, Golberg, Dmitri, Bando, Yoshio
Format: Article
Language:English
Subjects:
Arrays
Bombardment
Emission
Field emission
Finite element method
Metal oxides
Nanostructure
Nanowires
Variability
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Summary:W sub(18)O sub(49) nanowires have been intensively studied in recent years due to their good field emission (FE) performances. However, now their development has encountered difficulties, i.e., their emission uniformity is not good enough for high resolution field emission display (FED) applications. Here, we have successfully fabricated patterned, large-scale W sub(18)O sub(49) nanowire vertical-arrays and for the first time applied an in situplasma treatment technique to improve their field emission performance. It is found that their emission uniformity has been improved to a very high level (distribution uniformity of emission sites is higher than 96% and their brightness uniformity reaches 75.64%), while other emission properties remained unchanged compared to untreated nanowires. The bombardment of Ar plasma and the reduction of H sub(2) plasma may be responsible for the improvement of their FE performance. It can be concluded that this developed technique is a very effective route to enhance the emission uniformity of patterned W sub(18)O sub(49) nanowire arrays, which may pave the way for FE emission behavior improvement of other metal oxide nanowires.
ISSN:2050-7526
2050-7534
DOI:10.1039/c3tc30340c