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Transparent field emission device from a spray coating of single-wall carbon nanotubes
Journal of the Electrochemical Society Số 11, năm 2010 (Tập 157, trang J371-J375)
ISSN: 134651
ISSN: 134651
DOI: 10.1149/1.3485039
Tài liệu thuộc danh mục: Scopus
Article
English
Từ khóa: Emitter devices; Field emission devices; High field; Magnetic stirrers; Maximum current density; Metal particle; N ,N-Dimethylformamide; Purification process; Single-wall carbon nanotubes; Spray coating; Turn-on field; Ultrasonic bath; Vapor phase methods; Amorphous carbon; Carbon nanotubes; Centrifugation; Coatings; Dimethylformamide; Field emission; Organic solvents; Purification; Single-walled carbon nanotubes (SWCN)
Tóm tắt tiếng anh
A transparent field emission device made from spray coating a single-wall carbon nanotube (SWNT) in N,N -dimethylformamide (DMF) was developed. Highly crystalline SWNTs were successfully synthesized using a vapor phase method. Amorphous carbon and catalyst metal particles that remained in the SWNTs were removed using a purification process. The purified SWNTs were diluted and dispersed in DMF using an ultrasonic bath and a magnetic stirrer. The residue was removed by centrifugation of the SWNT DMF solution. The solution was then spray-coated to fabricate the emitter devices. The SWNT emitter has a transparency of more than 60% and a resistance of 200 ω/. The transparent field emission device shows a maximum current density of 0.9 mA cm-1, a low turn-on field of 1.1 V mu; m-1, and a high field enhancement factor of 6000. © 2010 The Electrochemical Society.
