Browsing by Author "Chiang, Mei-Chao"

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Effects of Hydrogen Plasma Treatment on Field-Emission Characteristics of Palladium Nanogap Emitters
(2008)
Tsai, Chih-Hao
;
Chen, Kuan-Jung
;
Pan, Fu-Ming
;
Lo, Hsiang-Yu
;
Li, Yiming
Nanogaps were prepared on the Pd line electrode by focused ion beam, and electron field-emission characteristics of the Pd nanogap emitter subject to hydrogen plasma treatment were studied. The as-prepared nanogap had smooth and uniform gap edges, and thus field-emission characteristics of the nanogap emitter were primarily dependent on the gap separation. After the hydrogen plasma treatment, the field-emission property of the Pd nanogap emitter was significantly enhanced. The improvement in the field-emission property was mainly attributed to formation of a ragged morphology on the nanogap emitter during the hydrogen plasma treatment. The ragged morphology provided more emitting sites with a high field enhancement factor. The Fowler-Nordheim plot was used to elucidate the dependence of field-emission characteristics of the Pd nanogap emitter on the plasma-induced ragged morphology. (C) 2008 The Electrochemical Society. [DOI: 10.1149/1.2988646] All rights reserved.
Numerical simulation of field emission in the surface conduction electron-emitter display
(2007)
Lo, Hsiang-Yu
;
Li, Yiming
;
Chao, Hsueh-Yung
;
Tsai, Chih-Hao
;
Pan, Fu-Ming
We employ a three-dimensional (3D) particle-in-cell method coupling with finite-difference time domain scheme to simulate the electron emission in surface conduction electron-emitter displays (SEDs). This computational technique includes the space charge effects automatically. We thus explore the conducting mechanism, the emission efficiency, and the current density distribution on the anode plate with one field emission emitter.