Effect of few-walled carbon nanotube crystallinity on electron field emission property
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서지정보
ㆍ발행기관 : 한국탄소학회
ㆍ수록지정보 : Carbon Letters / 12권 / 4호
ㆍ저자명 : HaeDeukJeong, JongHyeokLee, ByungGapLee, HeeJinJeong, Geon-WoongLee, DaeSukBang, DonghwanCho, Young-BinPark
ㆍ저자명 : HaeDeukJeong, JongHyeokLee, ByungGapLee, HeeJinJeong, Geon-WoongLee, DaeSukBang, DonghwanCho, Young-BinPark
목차
1. Introduction2. Experimental
3. Results and Discussion
4. Conclusions
Acknowledgments
References
한국어 초록
We discuss the influence of few-walled carbon nanotubes (FWCNTs) treated with nitricacid and/or sulfuric acid on field emission characteristics. FWCNTs/tetraethyl orthosilicate
(TEOS) thin film field emitters were fabricated by a spray method using FWCNTs/TEOS sol
one-component solution onto indium tin oxide (ITO) glass. After thermal curing, they were
found tightly adhered to the ITO glass, and after an activation process by a taping method,
numerous FWCNTs were aligned preferentially in the vertical direction. Pristine FWCNT/
TEOS-based field emitters revealed higher current density, lower turn-on field, and a higher
field enhancement factor than the oxidized FWCNTs-based field emitters. However, the unstable
dispersion of pristine FWCNT in TEOS/N,N-dimethylformamide solution was not
applicable to the field emitter fabrication using a spray method. Although the field emitter of
nitric acid-treated FWCNT showed slightly lower field emission characteristics, this could
be improved by the introduction of metal nanoparticles or resistive layer coating. Thus, we
can conclude that our spray method using nitric acid-treated FWCNT could be useful for
fabricating a field emitter and offers several advantages compared to previously reported
techniques such as chemical vapor deposition and screen printing.
영어 초록
We discuss the influence of few-walled carbon nanotubes (FWCNTs) treated with nitricacid and/or sulfuric acid on field emission characteristics. FWCNTs/tetraethyl orthosilicate(TEOS) thin film field emitters were fabricated by a spray method using FWCNTs/TEOS solone-component solution onto indium tin oxide (ITO) glass. After thermal curing, they werefound tightly adhered to the ITO glass, and after an activation process by a taping method,numerous FWCNTs were aligned preferentially in the vertical direction. Pristine FWCNT/TEOS-based field emitters revealed higher current density, lower turn-on field, and a higherfield enhancement factor than the oxidized FWCNTs-based field emitters. However, the unstabledispersion of pristine FWCNT in TEOS/N,N-dimethylformamide solution was notapplicable to the field emitter fabrication using a spray method. Although the field emitter ofnitric acid-treated FWCNT showed slightly lower field emission characteristics, this couldbe improved by the introduction of metal nanoparticles or resistive layer coating. Thus, wecan conclude that our spray method using nitric acid-treated FWCNT could be useful forfabricating a field emitter and offers several advantages compared to previously reportedtechniques such as chemical vapor deposition and screen printing.참고 자료
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