Controlled Synthesis of Tungsten Oxide Nanowires Prepared by Thermal Oxidation for Application in Cold Cathode Flat Panel X-ray Source

被引：0

作者：

Liu, Qi ^{[1
]}

Lin, Zufang ^{[1
]}

Kang, Song ^{[1
]}

Zhang, Guofu ^{[1
]}

Deng, Shaozhi ^{[1
]}

Xu, Ningsheng ^{[1
]}

Chen, Jun ^{[1
]}

机构：

[1] Sun Yat Sen Univ, Sch Elect & Informat Technol, State Key Lab Optoelect Mat & Technol, Guangdong Prov Key Lab Display Mat & Technol, Guangzhou 510275, Peoples R China

来源：

2024 37TH INTERNATIONAL VACUUM NANOELECTRONICS CONFERENCE, IVNC 2024 | 2024年

基金：

国家重点研发计划; 中国国家自然科学基金;

关键词：

Catalyst-free thermal oxidation; WO3-x nanowires; FPXS; FIELD-EMISSION;

D O I：

10.1109/IVNC63480.2024.10652579

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Cold cathode flat panel X-ray source has significant uses in medical imaging and industrial non-destructive testing. Tungsten oxide (WO3-x) nanowires have exceptional field emission characteristics, involving low turn-on field, high current density, and excellent field emission stability. However, the controllable preparation of tungsten oxide nanowires on a large area is still an unsolved problem. In this study, the synthesis of WO3-x nanostructures was explored employing a catalyst-free thermal oxidation method by varying the oxidation atmosphere. Controllable growth of large area high density WO3-x nanowires and nanosheets were realized on glass substrate. Field emission measurement results demonstrate that lower turn-on field and higher emission current can be obtained from nanowires than those from the nanosheets. A diode-structure flat panel X-ray source utilizing WO3-x nanowires was investigated. Uniform X-ray emission and projection imaging were achieved.

引用

页数：2

共 7 条

[1] Recent Progress on ZnO Nanowires Cold Cathode and Its Applications [J].

Chen, Yicong ;

Deng, Shaozhi ;

Xu, Ningsheng ;

Chen, Jun .

NANOMATERIALS, 2021, 11 (08)

[2] The catalyst-free synthesis of large-area tungsten oxide nanowire arrays on ITO substrate and field emission properties [J].

Huang, Kai ;

Pan, Qingtao ;

Yang, Feng ;

Ni, Shibi ;

He, Deyan .

MATERIALS RESEARCH BULLETIN, 2008, 43 (04) :919-925

[3] WO3 nanowire field emission point electron source with high brightness and current stability [J].

Lin, Zufang ;

Chen, Huanjun ;

She, Juncong ;

Deng, Shaozhi ;

Chen, Jun .

VACUUM, 2022, 195

[4] Defect-Enhanced Field Emission from WO3 Nanowires for Flat-Panel X-ray Sources [J].

Lin, Zufang ;

Xie, Paibin ;

Zhan, Runze ;

Chen, Daokun ;

She, Juncong ;

Deng, Shaozhi ;

Xu, Ningsheng ;

Chen, Jun .

ACS APPLIED NANO MATERIALS, 2019, 2 (08) :5206-5213

[5] Real-space electron transfer in III-nitride metal-oxide-semiconductor-heterojunction structures [J].

Saygi, S ;

Koudymov, A ;

Adivarahan, V ;

Yang, J ;

Simin, G ;

Khan, MA ;

Deng, J ;

Gaska, R ;

Shur, MS .

APPLIED PHYSICS LETTERS, 2005, 87 (04)

[6] Advanced field emission measurement techniques for research on modern cold cathode materials and their applications for transmission-type x-ray sources [J].

Serbun, P. ;

Porshyn, V. ;

Mueller, G. ;

Luetzenkirchen-Hecht, D. .

REVIEW OF SCIENTIFIC INSTRUMENTS, 2020, 91 (08)

[7] A Review on the Properties and Applications of WO3 Nanostructure-Based Optical and Electronic Devices [J].

Yao, Yu ;

Sang, Dandan ;

Zou, Liangrui ;

Wang, Qinglin ;

Liu, Cailong .

NANOMATERIALS, 2021, 11 (08)

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