Article

High efficiency surface-conducted field emission from a ZnO nanotetrapod and MgO nanoparticle composite emitter

Display R&D Center, School of Electronic Science and Engineering, Southeast University, Nanjing 210096, People’s Republic of China
Applied Physics Letters (Impact Factor: 3.52). 01/2009; 93(25):253501 - 253501-3. DOI: 10.1063/1.3046785
Source: IEEE Xplore

ABSTRACT We report a surface-conducted field emitter made of a ZnO nanotetrapod and MgO nanoparticle composites with a high emission efficiency (∼100%) and current (3.77 mA at a gate voltage of 100 V and anode voltage of 1800 V). The fabrications of the triode structure with a 10×10 pixel array and corresponding driving method have been proposed. The electron trajectories are simulated according to the structure. Individual pixel addressing can be achieved by a sequential scanning mode. Display of moving images employing this triode structure was demonstrated. The results are of significance to the development of ZnO based triode field emitters.

0 Followers
 · 
62 Views
 · 
0 Downloads
  • [Show abstract] [Hide abstract]
    ABSTRACT: In this letter, we report a new kind of hybrid field emitters with a mixture of ZnO nano-tetrapods and MgO particles by a spin-coating method. Due to the excellent field-emission properties of hybrid field emitters, the turn-on electric field (at a current density of 1 ??A/cm<sup>2</sup>) and the threshold electric field (at a current density of 1 mA/cm<sup>2</sup>) have been reduced to 0.6 and 0.92 V/??m, respectively. The turn-on and the threshold electric fields have been decreased by about 67% and 74% compared with the data reported previously. With these hybrid field emitters, a cathodoluminescent lamp is investigated. As the experimental results show, the operation voltage of the cathodoluminescent lamp is low, and the ratio between the anode and the cathode currents is quite high. Apart from this, the brightness uniformity of the lamp is also improved.
    IEEE Electron Device Letters 10/2009; DOI:10.1109/LED.2009.2027138 · 3.02 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: To utilize high-performance nanoemitter cold cathode prepared by high-temperature direct-growth process, 4.5 in. field emission display based on double-gate driving principle has been fabricated. A stacked-metalized-aperture structure has been introduced to improve stability. This structure composes of two gate-plates and is different in terms of addressing behavior from previously reported single gate-plate structure. Device characteristics have been investigated in details and are found to comply in trend with simulated results. The upper gate is found having native focusing feature. The result is encouraging as the current structure is possible to achieve high-performance large-area display.
    Journal of vacuum science & technology. B, Microelectronics and nanometer structures: processing, measurement, and phenomena: an official journal of the American Vacuum Society 03/2010; 28(2). DOI:10.1116/1.3275745 · 1.36 Impact Factor
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: Vertical zinc oxide nanowires, used as electron emitters, were synthesized on ZnO:Ga/glass substrate by a vapor–liquid–solid process without a catalyst. The nanowires, 5μm long and 50–250nm in diameter, were grown with a preferred (002) orientation and a small XRD full-width at half-maximum intensity. Illumination of ZnO nanowires by UV improved their field emission attributes, reducing their turn-on electric field to 2.1V/μm at a current density of lμA/cm2. This phenomenon is attributed to the generation of a large number of hole–electron pairs by UV illumination.
    Chemical Physics Letters 04/2010; 490(4-6):176-179. DOI:10.1016/j.cplett.2010.03.033 · 1.99 Impact Factor
Show more