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Jun Lin - One of the best experts on this subject based on the ideXlab platform.

  • cagdalo4 tb3 eu3 as promising phosphors for full color Field Emission Displays
    Journal of Materials Chemistry C, 2014
    Co-Authors: Yang Zhang, Zhiyao Hou, Dongling Geng, Jianshe Lian, Guo Zhang, Jun Lin
    Abstract:

    Eu3+ and/or Tb3+-doped CaGdAlO4 phosphor samples were synthesized via a conventional high temperature solid-state reaction process. X-Ray diffraction (XRD), transmission electron microscopy (TEM), photoluminescence (PL) as well as cathodoluminescence (CL) spectra were used to characterize the samples. For CaGdAlO4:Tb3+, the concentration of doped Tb3+ has a significant effect on the 5D3/5D4 Emission intensity due to the dipole–dipole cross-relaxation mechanism from 5D3 to 5D4. Under the 4f8 → 4f75d excitation of Tb3+ or low-voltage electron beam excitation, the CaGdAlO4:Tb3+ samples show tunable luminescence from blue to cyan and then to green with the variation of the Tb3+-doping concentration. For CaGdAlO4:Eu3+, the samples exhibit a reddish-orange Emission corresponding to the 5D0,1 → 7F0,1,2,3 transitions of Eu3+. Energy transfer can take place from Tb3+ to Eu3+ when they are codoped in one host. Furthermore, for CaGdAlO4:Tb3+/Eu3+, a white Emission can be realized in the single phase CaGdAlO4 host by reasonably adjusting the doping concentrations of Tb3+ and Eu3+ under low-voltage electron beam excitation. Due to the excellent PL, CL properties and good CIE chromaticity coordinates, the as-prepared Tb3+/Eu3+-doped CaGdAlO4 nanocrystalline phosphors have potential applications in Field Emission Display devices.

  • synthesis and luminescent properties of gdnbo4 re3 re tm dy nanocrystalline phosphors via the sol gel process
    Journal of Physical Chemistry C, 2013
    Co-Authors: Xinghua Tang, Mengmeng Shang, Liushui Yan, Xiaoming Liu, Jun Lin
    Abstract:

    Nanocrystalline GdNbO4:Tm3+ and GdNbO4:Dy3+ phosphors were prepared through a Pechini-type sol gel process. X-ray diffraction, Field Emission scanning electron microscopy, transmission electron microscopy, photoluminescence, and cathodoluminescence (CL) spectra were utilized to characterize the synthesized phosphors. XRD reveals that the samples begin to crystallize at 900 degrees C and the pure GdNbO4 phase can be obtained at 1000 degrees C. FE-SEM images indicate that the GdNbO4:Tm3+ and GdNbO4:Dy3+ samples consist of fine and spherical grains with a size around 30-50 nm. Under the excitation of UV light (264 nm) and low-voltage electron beams (1-3 kV), the GdNbO4:Tm3+ and GdNbO4:Dy3+ phosphors showed the characteristic Emissions of Tm3+ (D-1(2) -> H-3(6), H-3(5), H-3(4), and (1)G(4) -> H-3(6) transitions) and Dy3+ (F-4(9/2) -> H-6(15/2) and F-4(9/2) -> H-6(13/2) transitions), respectively. The blue CL of the GdNbO4:Tm3+ phosphor has higher color purity and comparable intensity to the Y2SiO5:Ce3+ commercial product. A single-composition white light emitting in response to near UV and low-voltage electron beam excitation has been realized in GdNbO4:Dy3+ phosphor. The obtained GdNbO4:Tm3+ and GdNbO4:Dy3+ phosphors have potential applications in the areas of near UV white-light-emitting diodes and Field Emission Display devices.

  • single composition trichromatic white emitting ca9mgna po4 7 ce3 tb3 mn2 phosphors soft chemical synthesis luminescence and energy transfer properties
    European Journal of Inorganic Chemistry, 2013
    Co-Authors: Yang Zhang, Ziyong Cheng, Dongling Geng, Mengmeng Shang, Hongzhou Lian, Jun Lin
    Abstract:

    Ce3+-, Tb3+-, and Mn2+-activated Ca9MgNa(PO4)(7) (CMNP) phosphors have been prepared by a Pechini-type sol-gel method. X-ray diffraction (XRD), Field-Emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), and photoluminescence (PL) and cathodoluminescence (CL) spectroscopy were used to characterize the samples. The energy transfer from Ce3+ to Tb3+ in CMNP phosphors has been demonstrated to be a resonant type by a dipole-quadrupole mechanism, and the Ce3+ to Tb3+ critical distances (R-C) calculated by the concentration-quenching method and the spectral-overlap method are 12.21 and 12.11 angstrom, respectively. A color-tunable Emission in CMNP phosphors can be realized by Ce3+Tb3+ or Ce3+Mn2+ energy transfer. White cathodoluminescence has been realized in a single-phase Ca9MgNa(PO4)(7) host by codoping with Ce3+, Tb3+, and Mn2+ for the first time with International Commission on Illumination (CIE) chromaticity coordinates (0.319, 0.327). Furthermore, the cathodoluminescence (CL) properties of CMNP:Ce3+/Tb3+/Mn2+ phosphors, including the dependence of the CL intensity on accelerating voltage and filament current, the decay behavior of CL intensity under electron bombardment, and the stability of the CIE chromaticity coordinates, have been investigated in detail. Owing to their good CL properties and good CIE chromaticity coordinates, the as-prepared phosphors have potential application in Field Emission Display (FED) devices.

  • Soft-chemical synthesis and tunable luminescence of Tb3+, Tm3+/Dy3+-doped SrY2O4 phosphors for Field Emission Displays
    Dalton transactions (Cambridge England : 2003), 2013
    Co-Authors: Yang Zhang, Ziyong Cheng, Dongling Geng, Mengmeng Shang, Xiao Zhang, Hongzhou Lian, Jun Lin
    Abstract:

    Tb3+, Tm3+, and Dy3+-activated SrY2O4 phosphors have been prepared via Pechini-type sol–gel method. X-Ray diffraction (XRD), Field-Emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), photoluminescence (PL) and lifetimes, as well as cathodoluminescence (CL) spectra were used to characterize the samples. Under low-voltage electron beam excitation, the Tb3+-doped samples show a green luminescence, with a better CIE coordinates and higher Emission intensity than the commercial product ZnO: Zn. Blue and yellow Emissions could be obtained by doping with Tm3+ and Dy3+, respectively. A color-tunable Emission in SrY2O4 phosphors can be realized by co-doping with Tm3+ and Dy3+. White cathodoluminescence (CL) has been realized in a single-phase SrY2O4 host by co-doping with Tm3+ and Dy3+ for the first time with CIE (0.315, 0.333). Furthermore, the cathodoluminescence (CL) properties of SrY2O4: Tb3+/Tm3+/Dy3+ phosphors including the dependence of CL intensity on accelerating voltage and filament current, the decay behaviour of CL intensity under electron bombardment, and the stability of CIE chromaticity coordinate have been investigated in detail. The as-prepared phosphors might be promising for use in Field-Emission Display (FED) devices.

  • color tunable Emission and energy transfer in ca3gd7 po4 sio4 5o2 ce3 tb3 mn2 phosphors
    Inorganic Chemistry, 2012
    Co-Authors: Yang Zhang, Mengmeng Shang, Dongling Geng, Chong Peng, Jun Lin
    Abstract:

    Ce(3+)-, Tb(3+)-, and Mn(2+)-activated Ca(3)Gd(7)(PO(4))(SiO(4))(5)O(2) (CGPS) silicate-phosphate oxyapatite phosphors have been prepared via conventional solid-state reaction processes. The Ce(3+) Emission at different lattice sites has been identified and discussed. The dual energy transfer of Ce(3+) → Tb(3+) and Ce(3+) → Mn(2+) has been investigated. The energy transfer from Ce(3+) to Mn(2+) in CGPS phosphors has been demonstrated to be a resonant type via a dipole-quadrupole mechanism, and the critical distances (R(C)) for Ce(3+) to Mn(2+) calculated by the concentration quenching and spectral overlap methods are 9.71 and 9.15 A, respectively. A color-tunable Emission in CGPS phosphors can be realized by Ce(3+) → Tb(3+) or Ce(3+) → Mn(2+) energy transfer. CGPS:0.05Ce(3+)/ 0.15Tb(3+) shows the optimum green Emission. Meanwhile, white cathodoluminescence (CL) has been realized in a single-phased Ca(3)Gd(7)(PO(4))(SiO(4))(5)O(2) host by codoping with Ce(3+) and Mn(2+) with CIE (0.322, 0.326). Furthermore, the CL properties of CGPS:Ce(3+)/Tb(3+)/Mn(2+) phosphors, including the dependence of the CL intensity on the accelerating voltage and filament current, the decay behavior of the CL intensity under electron bombardment, and the stability of the CIE chromaticity coordinates, have been investigated in detail. Because of the good CL properties and good CIE chromaticity coordinates, the as-prepared phosphors have potential application in Field Emission Display devices.

Jun Chen - One of the best experts on this subject based on the ideXlab platform.

  • integration of zno nanowires in gated Field emitter arrays for large area vacuum microelectronics applications
    Current Applied Physics, 2017
    Co-Authors: Long Zhao, Shao Zhi Deng, Yuxiang Chen, Yuanming Liu, Guofu Zhang, Juncong She, Jun Chen
    Abstract:

    Abstract Addressable Field emitter arrays (FEAs) have important applications in vacuum electronic devices. However, it is important to integrate nanowire emitters into a gated structure without influencing the device structure and maintain the excellent Field Emission properties of nanowire emitters in the FEAs after the fabrication process. In this study, gate-structure ZnO nanowire FEAs were fabricated by a microfabrication process. The structure combines a planar gate and an under-gate, which is compatible with the preparation of ZnO nanowire emitters. The effect of electrode materials on the Field Emission properties of ZnO nanowires was studied using a diode structure, and it was found that ZnO nanowire pads on indium-tin-oxide (ITO) electrode showed better Field Emission performance compared with chromium (Cr) electrode. In addition, effective Emission current modulation by the gate voltage was achieved and the addressing capability was demonstrated by integrating the ZnO nanowire FEAs in a vacuum-encapsulated Field Emission Display. The reported technique could be a promising route to achieve large area addressable FEAs.

  • high luminescent li2casio4 eu2 cyan phosphor film for wide color gamut Field Emission Display
    Optics Express, 2012
    Co-Authors: Jun Chen, Shao Zhi Deng, Hongbin Liang, Jun Lin
    Abstract:

    Li2CaSiO4:Eu2+ cyan phosphor screen for enlarging the color gamut of Field Emission Display has been prepared and characterized. The luminance of Li2CaSiO4:Eu2+ phosphor film can reach as high as about 12000 cd/m2 under the conditions of Va = 7 kV and Ja = 2.8 mA/cm2. The cathodoluminescent spectrum, luminance, saturation current density and degradation property are compared with another cyan phosphor Mg2SnO4:Ti4+,Mn2+. It is found that Li2CaSiO4:Eu2+ phosphor exhibits narrower Emission band, higher luminance, higher saturation current density, higher resistance to electron bombardment, higher thermal stability and conductivity as well as purer color. Thus, Li2CaSiO4:Eu2+ has great potential in application in Field Emission Display as well as light emitting diode.

  • Improvement of Field Emission uniformity of tungsten oxide nanowire arrays via in-situ plasma treatment
    2011 24th International Vacuum Nanoelectronics Conference, 2011
    Co-Authors: Fuyao Mo, Shao Zhi Deng, Jun Chen, Lifang Li, Ning Sheng Xu
    Abstract:

    W18O49 nanowires have demonstrated good Field Emission properties, such as low turn-on filed and high current density. However, their Emission uniformity still needs improvement, which is an important issue for large area application such as Field Emission Display. In present study, we reported an in-situ plasma treatment method using Ar and H2 to improve the Emission uniformity of tungsten oxide nanowires. Increase of Emission site was observed and the method has proved to be an effective method.

  • fabrication of gated cuo nanowire Field emitter arrays for application in Field Emission Display
    Journal of Vacuum Science & Technology. B. Nanotechnology and Microelectronics: Materials Processing Measurement and Phenomena, 2010
    Co-Authors: R. Z. Zhan, Jun Chen, S. Z. Deng
    Abstract:

    Using nanowire Field emitters can be a way to overcome the high cost of Field Emission Display using Spindt-type tip arrays. How to integrate nanowire emitters into the Field Emission Display device structure without influencing the device structure is an important issue. In this study, a gated CuO nanowire Field emitter arrays were fabricated by a microfabrication process. By using a thermal oxidation process, the CuO nanowire Field emitter arrays are prepared from copper thin film pads defined in a planar-gate structure. Effective Emission current modulation by the gate voltage is achieved. Using a green phosphor screen as anode, a brightness of 92 cd/m2 was obtained at an anode voltage of 4.5 kV and a gate voltage of 120 V when operating under direct current mode. A vacuum-packaged Field Emission Display using CuO nanowire Field emitter arrays was also fabricated and Display of moving images was demonstrated. The reported technique could be a promising route to achieved large area Field Emission displa...

  • cathodoluminescent properties of nanocrystalline lu3ga5o12 tb3 phosphor for Field Emission Display applicationa
    Journal of Vacuum Science & Technology. B. Nanotechnology and Microelectronics: Materials Processing Measurement and Phenomena, 2010
    Co-Authors: Jun Chen, S. Z. Deng, J Lin
    Abstract:

    The cathodoluminescent properties of nanocrystalline Lu3Ga5O12:Tb3+ phosphor films were investigated. Phosphor films were prepared on indium tin oxide coated glass by a screen printing method. The Lu3Ga5O12:Tb3+ phosphor is mixed with In2O3 nanoparticles to improve the luminescence and degradation properties of phosphor films under electron excitation. Cathodoluminescent spectra and luminance degradation behavior of the Lu3Ga5O12:Tb3+ phosphor films under electron bombardment were studied. Enhancement of the luminescence was observed after being mixed with In2O3 nanoparticles. Also, the In2O3 mixed Lu3Ga5O12:Tb3+ phosphor shows improvement of the resistance to the electron bombardment. The results show that the Lu3Ga5O12:Tb3+ phosphor is stable under electron bombardment and has potential for application in Field Emission Display devices.

Jong Min Kim - One of the best experts on this subject based on the ideXlab platform.

  • a simple structure and fabrication of carbon nanotube Field Emission Display
    Applied Surface Science, 2004
    Co-Authors: Yongsoo Choi, Chun Gyoo Lee, J H Kang, Yong Wan Jin, J E Jung, Haesung Kim, Byonggon Lee, Sungwook Kang, Ji Whan Kim, Jong Min Kim
    Abstract:

    Abstract A triode structure of Field Emission Displays based upon carbon-nanotube emitters is studied. In this structure, gate electrodes are located underneath cathode electrodes with an in-between insulating layer, so called an under-gate-type triode structure. The modulation of electron Emission by changing gate voltages is confirmed. Charging on the insulating layer by Emission electrons could be reduced by pattering the insulating layer. Results of our experiment show that Emission properties are improved in the triode structure with the patterned insulator. The simple structure and fabrication process may lead the under-gate-type triode structure to the practical applications.

  • an under gate triode structure Field Emission Display with carbon nanotube emitters
    Diamond and Related Materials, 2001
    Co-Authors: Younsuk Choi, Chun Gyoo Lee, Naesung Lee, J H Kang, J E Jung, Wonbong Choi, Yonggook Park, Cheol Jin Lee, J H You, Jong Min Kim
    Abstract:

    A new triode structure for Field Emission Displays based on carbon nanotube emitters is demonstrated. In this structure, gate electrodes are located underneath the cathode electrodes with an in-between insulating layer, a so-called under-gate type triode structure. Although the gate is on the opposite side of the anode with respect to the cathode electrodes, modulation of electron Emission from the carbon nanotube emitters by the gate voltage is confirmed. The simple structure and fabrication process may lead to practical applications for the under-gate triode type structure.

  • electrophoresis deposition of carbon nanotubes for triode type Field Emission Display
    Applied Physics Letters, 2001
    Co-Authors: Wonbong Choi, Naesung Lee, Yongsoo Choi, Heekyung Kim, Yong Wan Jin, M J Yun, Sang Joon Lee, Jihoon Kang, N S Park, Jong Min Kim
    Abstract:

    A triode-type Field Emission Display has been fabricated using carbon nanotube emitters. Purified single walled carbon nanotubes were selectively deposited onto a cathode electrode in a triode-type structure by an electrophoresis. Emission current was modulated with gate potentials of 100–300 V. A high brightness of 1000 cd/m2 with uniform Emission was obtained at 900 V at the anode and 200 V at the gate. The fluctuation of Emission current was found to be less than 5% in a fully sealed Field Emission Display. Selective deposition of carbon nanotubes by electrophoresis shows high feasibility for triode-type Field Emission Displays.

  • carbon nanotubes for full color Field Emission Displays
    Japanese Journal of Applied Physics, 2000
    Co-Authors: Wonbong Choi, Naesung Lee, Deukseok Chung, J H Kang, Young Hee Lee, Sang Hyeun Park, Hoon Kim, Seung Mi Lee, So Youn Chung, Jong Min Kim
    Abstract:

    A 4.5-inch fully sealed carbon-nanotube Field-Emission Display with a 200-µm narrow gap was fabricated on glass using paste squeezing and surface rubbing techniques. The fabricated Displays were fully scalable at low temperatures below 415°C and showed very high luminance of 1800 cd/m2 at 4 V/µm. The degradation of Emission currents for single-wall carbon nanotubes was less than 10% in electrical aging tests. Large Field-enhancement factors and low turn-on voltages (1.5–3 V/µm) were attributed to well-aligned carbon nanotubes on substrates and a large number density of carbon nanotubes of 5–10/µm2, which was confirmed by high-resolution electron microscopy. Although localized states exist for various tip morphologies, which was calculated by density-functional tight-binding calculations, the contribution from such states was found to be negligible.

Roland Hischier - One of the best experts on this subject based on the ideXlab platform.

  • Life cycle assessment study of a Field Emission Display television device
    International Journal of Life Cycle Assessment, 2015
    Co-Authors: Roland Hischier
    Abstract:

    An life cycle assessment (LCA) study of a Field Emission Display (FED)\ntelevision device was established. The first objective of this study was\nto get an up-to-date and comprehensive picture by applying the latest\ndevelopments in the area of LCA, especially concerning the use of\nnanoparticles. In its second part, the study shows a comparison with\ntoday's Display technologies (i.e. CRT, LCD, plasma) and the timely\ndevelopment of the assessment of a FED television device.\nThis LCA study covers the complete life cycle of a FED television device\nin accordance with the ISO 14040 standard, from the extraction of raw\nmaterials until the final end-of-life treatment in a European WEEE\nrecycling system. Two different functional units were applied in this\nstudy: For the in-depth analysis of the FED television device, an entire\ndevice along its complete life cycle was considered as functional\nunit-for the subsequent comparison with today's Display technologies,\n``one square-inch of Display during 1 h of active use{''} was used as an\nappropriate functional unit. Main data source for the FED device was\npatent information; ecoinvent was used as default background database.\nThe in-depth analysis of this FED television device shows a clear\ndominance of the production phase (independently of the impact\ncategory). Within the production of such a device, the electronics part\n(i.e. the printed wiring boards) shows the highest contribution-while,\neven when focussing on the glass and its various coating layers only,\nthe carbon nanotubes (CNTs) production has a very minor influence. The\nreleases of CNTs during the End-of-Life treatment do not contribute in a\nrelevant manner to the overall impact neither-even when focussing on the\n``ecotoxicity potential{''} by using conservative CFs reported for this\ntype of releases. Last but not least, the comparison with the existing\ntelevision Display technologies shows that an FED device has an\nenvironmental advantage over all three other technologies using the\nabove stated functional unit of ``one square-inch of Display during 1 h\nof active use{''}.\nTraditional impact categories as well as the ecotoxicity factor results\nin clear environmental advantages for an FED television device when\ncomparing it to the three Display technologies used today. Concerning\nthe general issue of evaluating applications of manufactured\nnanomaterials in LCA studies, this case study shows the high relevance\nof an adequate integration of nanoparticle releases into LCA studies in\norder to achieve an actually comprehensive evaluation.

  • Life cycle assessment study of a Field Emission Display television device
    The International Journal of Life Cycle Assessment, 2015
    Co-Authors: Roland Hischier
    Abstract:

    Purpose An life cycle assessment (LCA) study of a Field Emission Display (FED) television device was established. The first objective of this study was to get an up-to-date and comprehensive picture by applying the latest developments in the area of LCA, especially concerning the use of nanoparticles. In its second part, the study shows a comparison with today’s Display technologies (i.e. CRT, LCD, plasma) and the timely development of the assessment of a FED television device. Methods This LCA study covers the complete life cycle of a FED television device in accordance with the ISO 14040 standard, from the extraction of raw materials until the final end-of-life treatment in a European WEEE recycling system. Two different functional units were applied in this study: For the in-depth analysis of the FED television device, an entire device along its complete life cycle was considered as functional unit—for the subsequent comparison with today’s Display technologies, “one square-inch of Display during 1 h of active use” was used as an appropriate functional unit. Main data source for the FED device was patent information; ecoinvent was used as default background database. Results and discussion The in-depth analysis of this FED television device shows a clear dominance of the production phase (independently of the impact category). Within the production of such a device, the electronics part (i.e. the printed wiring boards) shows the highest contribution—while, even when focussing on the glass and its various coating layers only, the carbon nanotubes (CNTs) production has a very minor influence. The releases of CNTs during the End-of-Life treatment do not contribute in a relevant manner to the overall impact neither—even when focussing on the “ecotoxicity potential” by using conservative CFs reported for this type of releases. Last but not least, the comparison with the existing television Display technologies shows that an FED device has an environmental advantage over all three other technologies using the above stated functional unit of “one square-inch of Display during 1 h of active use”. Conclusions Traditional impact categories as well as the ecotoxicity factor results in clear environmental advantages for an FED television device when comparing it to the three Display technologies used today. Concerning the general issue of evaluating applications of manufactured nanomaterials in LCA studies, this case study shows the high relevance of an adequate integration of nanoparticle releases into LCA studies in order to achieve an actually comprehensive evaluation.

Naesung Lee - One of the best experts on this subject based on the ideXlab platform.

  • an under gate triode structure Field Emission Display with carbon nanotube emitters
    Diamond and Related Materials, 2001
    Co-Authors: Younsuk Choi, Chun Gyoo Lee, Naesung Lee, J H Kang, J E Jung, Wonbong Choi, Yonggook Park, Cheol Jin Lee, J H You, Jong Min Kim
    Abstract:

    A new triode structure for Field Emission Displays based on carbon nanotube emitters is demonstrated. In this structure, gate electrodes are located underneath the cathode electrodes with an in-between insulating layer, a so-called under-gate type triode structure. Although the gate is on the opposite side of the anode with respect to the cathode electrodes, modulation of electron Emission from the carbon nanotube emitters by the gate voltage is confirmed. The simple structure and fabrication process may lead to practical applications for the under-gate triode type structure.

  • electrophoresis deposition of carbon nanotubes for triode type Field Emission Display
    Applied Physics Letters, 2001
    Co-Authors: Wonbong Choi, Naesung Lee, Yongsoo Choi, Heekyung Kim, Yong Wan Jin, M J Yun, Sang Joon Lee, Jihoon Kang, N S Park, Jong Min Kim
    Abstract:

    A triode-type Field Emission Display has been fabricated using carbon nanotube emitters. Purified single walled carbon nanotubes were selectively deposited onto a cathode electrode in a triode-type structure by an electrophoresis. Emission current was modulated with gate potentials of 100–300 V. A high brightness of 1000 cd/m2 with uniform Emission was obtained at 900 V at the anode and 200 V at the gate. The fluctuation of Emission current was found to be less than 5% in a fully sealed Field Emission Display. Selective deposition of carbon nanotubes by electrophoresis shows high feasibility for triode-type Field Emission Displays.

  • application of carbon nanotubes to Field Emission Displays
    Diamond and Related Materials, 2001
    Co-Authors: Naesung Lee, Deukseok Chung, In Taek Han, J H Kang, Yongsoo Choi, Heekyung Kim, Sang Hyun Park, Yong Wan Jin, M J Yun, J E Jung
    Abstract:

    Abstract Large-area Field Emission Displays were fabricated with single-wall carbon nanotube emitters. A carbon nanotube paste was prepared and screen-printed to form an electron Emission layer on a glass-based substrate. Carbon nanotube-based Field Emission Displays fabricated by thick film processing were successfully integrated to demonstrate moving color images. They revealed excellent Field Emission characteristics of a threshold electric Field of approximately 2 V/μm. We have also investigated triode-type Field Emission Display structures to achieve high-gray scale and high brightness. In the triode structure, it was observed that electron Emission from carbon nanotube emitters was controlled by modulation of gate voltages.

  • carbon nanotubes for full color Field Emission Displays
    Japanese Journal of Applied Physics, 2000
    Co-Authors: Wonbong Choi, Naesung Lee, Deukseok Chung, J H Kang, Young Hee Lee, Sang Hyeun Park, Hoon Kim, Seung Mi Lee, So Youn Chung, Jong Min Kim
    Abstract:

    A 4.5-inch fully sealed carbon-nanotube Field-Emission Display with a 200-µm narrow gap was fabricated on glass using paste squeezing and surface rubbing techniques. The fabricated Displays were fully scalable at low temperatures below 415°C and showed very high luminance of 1800 cd/m2 at 4 V/µm. The degradation of Emission currents for single-wall carbon nanotubes was less than 10% in electrical aging tests. Large Field-enhancement factors and low turn-on voltages (1.5–3 V/µm) were attributed to well-aligned carbon nanotubes on substrates and a large number density of carbon nanotubes of 5–10/µm2, which was confirmed by high-resolution electron microscopy. Although localized states exist for various tip morphologies, which was calculated by density-functional tight-binding calculations, the contribution from such states was found to be negligible.

  • fully sealed high brightness carbon nanotube Field Emission Display
    Applied Physics Letters, 1999
    Co-Authors: Wonbong Choi, Naesung Lee, Deukseok Chung, In Taek Han, Heekyung Kim, Yong Wan Jin, J E Jung, Jihoon Kang, Young Hee Lee, Gyeongsu Park
    Abstract:

    A fully sealed Field-Emission Display 4.5 in. in size has been fabricated using single-wall carbon nanotube (CNT)-organic binders. The fabricated Displays were fully scalable at low temperature, below 415 °C, and CNTs were vertically aligned using paste squeeze and surface rubbing techniques. The turn-on Fields of 1 V/μm and Field Emission current of 1.5 mA at 3 V/μm (J=90 μA/cm2) were observed. Brightness of 1800 cd/m2 at 3.7 V/μm was observed on the entire area of a 4.5 in. panel from the green phosphor-indium–tin–oxide glass. The fluctuation of the current was found to be about 7% over a 4.5 in. cathode area.