An in-situ experimental was carried out to analyze how the gap between a front and rear panel influenced on the discharging properties of an AC Plasma Display Panel (PDP). Initial firing voltages showed almost constant values except at the position of near the barrier rib as the gap increased. The fluctuations of sustain voltages became smaller dependent on the gap, and seemed to have a linear relation to the filtered IR at 828 nm. Observation on the Infra-red indicated the excited or the metastable species could be greatly affected by the rear panel regardless of the gap. Based on these results, we discussed a new method to evaluate dimensional fluctuation of an AC PDP.

An in-situ Study on Discharging Characteristics of an Alternative Current Plasma Display Panel Varied with Discharging Space

To investigate the barrier ribs effect on the discharge characteristics in the discharge cell of Alternating-Current Plasma Display Panel, three kinds of barrier ribs in the discharge cell: gas gap, dielectric gap, and metallic gap, were studied respectively. The distribution of potential and the distribution of density of charged particles were obtained by the two-dimensional particle-in-cell kinetic simulation method. The simulation results shows that, in the Ne-Xe (4%) gas mixture with the gas pressure of 300 Torr, the distribution of electric potential, in the corner of the left and right side, is very different, while the distribution in the center of cell in these three cases is almost same. And the formation process of the striation during the discharge is also discussed. The distribution of density shows that the striation phenomenon occurs along with the firing of discharge, and the existence of the dielectric ribs may reduce the charged particles density humps to some degree. (© 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)

Investigation of Discharge Characteristics Affected by Barrier Ribs in the Discharge Cell of Alternating‐Current Plasma Display Panel

A system with periodical structure of graphite, in which a Li or H atom is set in the center of the supercell, has been simulated by molecular dynamics method to study the thermal diffusion of Li and H in the bulk graphite. It is found that the rates of diffusion of both Li and H atoms increase with the increase of the simulation temperature: from 50 K to 200 K, and the specific diffusive rates and behaviors for Li and H are different according to their trajectories. The diffusive curves for Li can be classified into three types, while H has only one type of diffusive curve, which shows that the interaction between Li and carbon is weaker than that between H and carbon. The conductive band gap of graphite is also calculated by the extended Huckel method. The gap is broadened by about 0.1 eV when graphite is intercalated with H, but the gap remains unchanged when graphite is intercalated with Li. It indicates that the addition of Li does not influence the conduction characteristic of graphite while that of H does. Thus Li-GIC (Graphite Intercalated Compound) is proposed to be a favorable material for the electrode.

Study on thermal behaviors of Li/H atom in the bulk graphite by molecular dynamics method

Electronic structures of LiCo0.92M0.08O2 (M=Ni, Zn) have been studied by the first principle theory based on the density-functional theory in this paper in order to understand their electronic conductivity improvement mechanism. Their DOS (density of state) and PDOS (partial density of state) have been calculated and compared with those of LiCoO2. The calculated results show that although the total DOS maintain unchanged, the distributions of DOS and PDOS are different from those of the undoped LiCoO2. DOS of of Co-3d electrons in LiCo0.92M0.08O2 (M=Ni, Zn) increases while and t2g decrease, and O atoms have more closed-shell characteristics and become more highly ionized, which induce the conductivity enhancement of LiCoO2 after it is M-doped. A possible reason, which is the charge compensation mechanism, is adopted for explaining this improvement.

STUDY ON CONDUCTANCE IMPROVEMENT OF THE CATHODE MATERIALS OF LiCo0.92M0.08O2 (M=Ni, Zn) BY AB INITIO CALCULATIONS

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Investigation of Discharge Characteristics Affected by Barrier Ribs in the Discharge Cell of Alternating‐Current Plasma Display Panel

Study on thermal behaviors of Li/H atom in the bulk graphite by molecular dynamics method

STUDY ON CONDUCTANCE IMPROVEMENT OF THE CATHODE MATERIALS OF LiCo0.92M0.08O2 (M=Ni, Zn) BY AB INITIO CALCULATIONS