• Title/Summary/Keyword: secondary electron emission coefficient

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Sputtering yield and defect energy level characteristics MgO protective layer according to $O_2$ partial pressure in AC-PDPs

  • Jung, S.J.;Son, C.G.;Song, K.B.;Cho, S.H.;Oh, H.J.;Cho, G.S.;Kang, S.O.;Choi, E.H.
    • 한국정보디스플레이학회:학술대회논문집
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    • 2007.08b
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    • pp.1384-1387
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    • 2007

  • We have investigated the sputtering and secondary electron emission characteristics of MgO protective layer according to the $O_2$ partial pressure. The MgO layer have been deposited by electron beam evaporation method and have varied the $O_2$ partial pressure as 0, $5.2{\times}10^{-5}$, $1.0{\times}10^{-4}$, and $4.1{\times}10^{-4}$ Torr. It has been known that the secondary electron emission coefficient and the number of defect energy levels increased as the $O_2$ partial pressure increases. So we have investigated the property of sputtering yield according to the $O_2$ partial pressure. We have known that the sputtering yield deceases as the $O_2$ partial pressure increases by using the FIB system.

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The characteristics of AC-PDPs According to binary and ternary gas mixtures of He-Ne-Xe_

  • Lee, H.J.;Son, C.G.;Lee, S.B.;Han, Y.K.;Jeoung, S.H.;You, N.L.;Lim, J.E.;Lee, J.H.;Moon, M.W.;Oh, P.Y.;Jeoung, J.M.;Choi, E.H.
    • 한국정보디스플레이학회:학술대회논문집
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    • 2005.07b
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    • pp.1195-1198
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    • 2005

  • The improvement of efficiency is the one of the most important part in AC PDPs . To achieve high efficiency, high VUV emission efficiency and High ion induces secondary electron emission coefficient are needed. We have measured the emission spectra of vacuum ultraviolet rays and ion induced secondary electron emission coefficient of MgO protective layer in surface discharge AC-PDP with binary and ternary gas mixtures. We have investigated electro-optical characteristics of AC-PDPs to optimum gas mixture for high efficient.

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Measurement of Defect Energy Level in MgO Layer

  • Son, Chang-Gil;Song, K.B.;Jeoung, S.J.;Park, E.Y.;Kim, J.S.;Choi, E.H.;J, S.
    • 한국정보디스플레이학회:학술대회논문집
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    • 2007.08b
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    • pp.1380-1383
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    • 2007

  • The secondary electron emission coefficient (${\gamma}$) of the cathode is an important factor for improving the discharge characteristics of AC-PDP, because of its close relationship to discharge voltage. In this experiment, we have investigated the electronic structure of the energy band in the MgO layer responsible for the high ${\gamma}$. We used three kinds of MgO pellet that have another component, and each MgO layers have been deposited by electron beam evaporation method. The work-functions of MgO layer have been investigated from their ion-induced secondary electron emission coefficient (${\gamma}$), respectively, using various ions with different ionization energies in a ${\gamma}-FIB$ (Focused Ion Beam) system. We have compared work-function with ${\gamma}-FIB$ system current signal for measurement defect energy level in MgO layer. MgO-A in the three types has lowest work-function value (4.12eV) and there are two defect energy levels.

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Influence of surface geometrical structures on the secondary electron emission coefficient $({\gamma})$ of MgO protective layer

  • Park, W.B.;Lim, J.Y.;Oh, J.S.;Jeong, H.S.;Jeong, J.C.;Kim, S.B.;Cho, I.R.;Cho, J.W.;Kang, S.O.;Choi, E.H.
    • 한국정보디스플레이학회:학술대회논문집
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    • 2003.07a
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    • pp.806-809
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    • 2003

  • Ion-induced secondary electron emission coefficient $({\gamma})$. of the patterned MgO thin film with geometrical structures has been measured by ${\gamma}$ - FIB(focused ion beam) system. The patterned MgO thin film with geometrical structures has been formed by the mask (mesh of ${\sim}$ $10{\mu}m^{2})$ under electron beam evaporation method. It is found that the higher ${\gamma}$. has been achieved by the patterned MgO thin film than the normal ones without patterning.

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Electro-optical Characteristics of the Degraded Functional Layer in an Alternating- Current Plasma Display Panel

  • Lee, Kyung Ae;Min, Booki;Son, Chang Gil;Byeon, Yong S.;Yoon, Sang Ho;Choi, Eun Ha
    • Applied Science and Convergence Technology
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    • v.24 no.6
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    • pp.232-236
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    • 2015

  • The electro-optical characteristics of several functional layers over the MgO protective layer were studied during the continuous discharge of an AC-PDP. In order to observe the degradation of each functional layer on the MgO protection layer, we measured the surface morphology, cathodoluminescence (CL) spectrum, the secondary electron emission coefficient (${\gamma}$) and the discharge characteristics after 500 hours of discharge during the operation of the AC-PDP.

  • https://doi.org/10.5757/ASCT.2015.24.6.232 인용 PDF KSCI