Plannar light source using a phosphor screen with single-walled carbon nanotubes as field emitters

Sharon Bahena-Garrido; Norihiro Shimoi; Daisuke AbeToshimasa HojoYasumitsu TanakaKazuyuki Tohji

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Plannar light source using a phosphor screen with single-walled carbon nanotubes as field emitters

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We developed and successfully fabricated a plannar light source device using a phosphor screen with single-walled carbon nanotubes (SWCNTs) as field emitters in a simple diode structure composed of the cathode containing the highly purified and crystalline SWCNTs dispersed into an organic In_2O_3-SnO_2 precursor solution and a non-ionic surfactant. The cathode was activated by scratching process with sandpaper to obtain a large field emission current with low power consumption. The nicks by scratching were treated with Fourier analysis to determine the periodicity of the surface morphology and designed with controlling the count number of sandpapers. The anode, on the other hand, was made with phosphor deliberately optimized by coverage of ITO nanoparticles and assembled together with the cathode by the new stable assembling process resulting to stand-alone flat plane-emission panel. The device in a diode structure has a low driving voltage and good brightness homogeneity in that plane. Furthermore, field emission current fluctuation, which is an important factor in comparing luminance devices too, has a good stability in a simple diode panel. The flat plane-emission device employing the highly purified and crystalline SWCNTs has the potential to provide a new approach to lighting in our life style.

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《Review of Scientific Instruments》 |2014年第10期|104704-1-104704-6|共6页
作者
Sharon Bahena-Garrido; Norihiro Shimoi; Daisuke AbeToshimasa HojoYasumitsu TanakaKazuyuki Tohji;
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Graduate School of Environmental Studies, Tohoku University, 6-6-20 Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan;

DOWA Holdings Co. Ltd., 14-1 Sotokanda 4-Chome, Chiyoda-ku, Tokyo 101-0021, Japan;

Graduate School of Engineering, Tohoku University, 6-6-06 Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan;

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Plannar light source using a phosphor screen with single-walled carbon nanotubes as field emitters

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