• 제목/요약/키워드: nanostructured

검색결과 586건 처리시간 0.032초

Fabrication and Properties of Under Gate Field Emitter Array for Back Light Unit in LCD

  • Jung, Yong-Jun;Park, Jae-Hong;Jeong, Jin-Soo;Nam, Joong-Woo;Berdinsky, Alexander S.;Yoo, Ji-Beom;Park, Chong-Yun
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2005년도 International Meeting on Information Displayvol.II
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    • pp.1530-1533
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    • 2005

  • We investigated under-gate type carbon nanotube field emitter arrays (FEAs) for back light unit (BLU) in liquid crystal display (LCD). Gate oxide was formed by wet etching of ITO coated glass substrate instead of depositing $SiO_2$ on the glass substrate. Wet etching is easer and simpler than depositing and etching of thick gate oxide to isolate the gate metal from cathode electrode in triode. Field emission characteristic s of triode structure were measured. The maximum current density of 92.5 ${\mu}A/cm^2$ was when the gate and anode voltage was 95 and 2500 V, respectively at the anode-cathode spacing of 1500 ${\mu}m$.

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The Effect of Catalysts merged with alumina on the Growing Characteristics of Carbon Nanotubes using AAO templates

  • Lee, In-Wha;Lee, Tae-Young;Yang, Ji-Hoon;Ha, Byoung-Ho;Yoo, Ji-Beom;Kim, Seong-Kyu;Park, Chong-Yun
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2002년도 International Meeting on Information Display
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    • pp.697-700
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    • 2002

  • Porous anodic aluminum oxide(AAO) templates prepared by anodizing method were used for growing multiwalled carbon nanotubes(CNTs). AAO templates with the homogeneous pore diameter and length were obtained by two step anodizing technique. Using AAO templates, vertically well-ordered two-dimensional carbon nanotube arrays were fabricated. We investigated the field emission property of CNTs grown using different catalyst metals in vacuum chamber (<$10^{-7}$ Torr) on AAO Template. To explain the different emission property, the surface reaction between catalysts and alumina pores which inserted carbon species of $C_2H_2$ using High resolution transmission electron microscopy (HRTEM) was studied.

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Improvement Field Emission Uniformity in Carbon Nanotube Composite using Zinc Nano-Fillers

  • Jeon, Sung-Yun;Park, Jae-Hong;Lee, Jong-Hak;Shin, Jun-Ho;Park, Sung-Min;Prashant, Alegaonkar;Yoo, Ji-Beom
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2007년도 7th International Meeting on Information Display 제7권1호
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    • pp.772-774
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    • 2007

  • The improvement in the field emission parameters, luminescent uniformity, degradation rate and half life has been observed for the thin-multi wall carbon nanotube (t-MWCNT) composite, after incorporating the Zn nanoparticles. The Zn nanoparticles $(diameter\;{\sim}\;100\;{\pm}15\;nm)$ has been incorporated to synthesize the Zn-t-MWCNT composite.

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Fabrication of transparent conducting films of carbon nanotubes using a spray method

  • Geng, Hong Zhang;Lee, Kyu;Song, Young-Il;Kim, Gil-Yong;Choi, Ha-Kyu;Jun, Bae-Jung;Ahn, Kay-Hyeok;Lee, Young-Hee
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2006년도 6th International Meeting on Information Display
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    • pp.525-528
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    • 2006

  • Transparent conducting films were fabricated on polyethylene terephthalate substrate by a spray method using double-walled carbon nanotubes dispersed in organic solvent and water-based solution. We analyzed the films by absorption spectra, sheet resistance, and scanning electron microscopy. Transparent conducting films with high uniformity and high transparency were fabricated by the spray method. We found that the dispersion particularly nanodispersion of CNTs was of crucial importance to improve the film performance.

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