• Title/Summary/Keyword: Lee O-Young

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A study on discharge characteristics of protective layer MgO with $SiO_2$ doped (AC PDP에서 $SiO_2$가 첨가된 MgO 보호막의 방전 특성 연구)

  • Lee, Young-Kwon;Park, Mi-Young;Park, Cha-Soo;Kim, Dong-Hyun;Lee, Ho-Jun;Park, Chung-Hoo
    • Proceedings of the KIEE Conference
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    • 2003.07c
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    • pp.1683-1685
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    • 2003
  • MgO is making an important role not only as a protective layer but also improves the discharge characteristics at AC PDP. Until now, the substitute of protective layer, MgO has been studied in many ways, but it's too difficult to get a new substitute as stable as MgO. But some problems has been advanced at the discharge characteristics of MgO on high temperature. So we studied the discharge characteristics of impure MgO with $SiO_2$ doped.

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A study on the Characteristics of MgO Thin Films Deposited by Bipolar pulse power (Bipolar pulse power를 사용하여 증착한 MgO 박막의 특성에 관한 연구)

  • Kim, Young-Su;Kim, Seung-Chan;Song, Geun-Yeoung;Choi, Hoon-Young;Jung, Hai-Young;Seo, Jung-Hyun;Lee, Seok-Hyun
    • Proceedings of the KIEE Conference
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    • 2003.10a
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    • pp.167-169
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    • 2003
  • AC PDP(Plasma Display panel)에서 MgO 보호막은 방전공간에 직접 노출되어 있기 때문에, AC PDP의 수명과 방전 특성이 직접적인 영향을 미친다. 그동안 보다 좋은 특성의 MgO 보호막을 증착하기 위한 연구가 Magnetron-sputtering, E-beam, ion-plating 등 여러 가지 방법에 의해 진행되어 왔다. 본 논문에서는 Bipolar pulse power를 사용하여 sputtering 방법으로 MgO 보호막을 증착하여, 그 전기적, 광학적 특성을 기존의 magnetron-sputtering 방법으로 증착한 MgO 보호막과 비교하였다. 그 결과 Bipo1ar pulse power를 이용한 MgO 보호막의 결정립이 더 크게 나타났으며 그것으로부터 AC PDP의 수명향상에 효과가 있을 것으로 사료된다.

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Characterization of Dielectric Relaxation and Reliability of High-k MIM Capacitor Under Constant Voltage Stress

  • Kwak, Ho-Young;Kwon, Sung-Kyu;Kwon, Hyuk-Min;Sung, Seung-Yong;Lim, Su;Kim, Choul-Young;Lee, Ga-Won;Lee, Hi-Deok
    • JSTS:Journal of Semiconductor Technology and Science
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    • v.14 no.5
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    • pp.543-548
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    • 2014
  • In this paper, the dielectric relaxation and reliability of high capacitance density metal-insulator-metal (MIM) capacitors using $Al_2O_3-HfO_2-Al_2O_3$ and $SiO_2-HfO_2-SiO_2$ sandwiched structure under constant voltage stress (CVS) are characterized. These results indicate that although the multilayer MIM capacitor provides high capacitance density and low dissipation factor at room temperature, it induces greater dielectric relaxation level (in ppm). It is also shown that dielectric relaxation increases and leakage current decreases as functions of stress time under CVS, because of the charge trapping effect in the high-k dielectric.

The Outgasing characteristics of MgO film for protecting layer of plasma display panel

  • Song, Byoung-Kwan;Lee, Young-Joon;Lee, Chang-Heon;Hwang, Hyun-Ki;Yeom, Guen-Young
    • 한국정보디스플레이학회:학술대회논문집
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    • 2002.08a
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    • pp.621-624
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    • 2002
  • In this study, outgassing characteristics of MgO films, and the plasma cleaning effects of the deposited MgO films by atmospheric pressure plasma on outgassing rate were compared. The MgO layer was heated up to 350 $^{\circ}C$ and the outgassing characteristics were observed for the heated conditions. As the main impurity species $H_2,\;H_2O,\;N_2,\;CO_2,\;and\;H_2O$ were released from this panel. Impurity species of plasma treatment panel were lower than non-treated panels for the heating temperature

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Preparation and Properties of $CuSb_2O_6$-doped $SnO_2$ Thin Films by Pulsed Laser Deposition (PLD법으로 제조된 $CuSb_2O_6-SnO_2$ 박막의 전기.광학적 특성)

  • Lee, Chae-Jong;Byun, Seung-Hyun;Lee, Hee-Young;Heo, Young-Woo;Lee, Joon-Hyung;Kim, Jeong-Joo
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2007.11a
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    • pp.262-263
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    • 2007
  • Effect of co-doping on optical and electrical properties of $SnO_2$ based thin films were studied. $SnO_2$ ceramic targets with up to 50mol% $CuSb_2O_6$ were prepared by sintering mixed-oxide compact in the temperature range of $1100^{\circ}C{\sim}1300^{\circ}C$ in air. Thin films were then deposited onto glass substrates by pulsed laser deposition where substrate temperature was maintained in the range of $500{\sim}650^{\circ}C$ with oxygen pressure of 3m~7.5mTorr and energy density of $1Jcm^{-2}$. It was found that with the increase amount of dopant, the electrical properties of thin films tended to improve with the smallest resistivity value obtained at about 8mol% doping, further increase, however, usually impaired the optical transmission in the visible range.

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Electrochemical Characteristics of $LiMn_2O_4$+Activated Carbon Electrode for Supercapacitor (Supercapacitor용 $LiMn_2O_4$+Activated Carbon 전극의 전기화학적 특성)

  • Jeon, Min-Je;Lee, Sun-Young;Kim, Ick-Jun;Moon, Seong-In;Im, Young-Tek;Lee, Sang-Hyun;Lee, Moon-Bae
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2005.07a
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    • pp.595-596
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    • 2005
  • This research which it sees adds $LiMn_2O_4$ in the activated carbon electrode the test against the effect which it follows is. Test cells, which were $LiMn_2O_4$fabricated with active mass composite consisted of (100-X)% of MSP-20 and (X)% of $LiMn_2O_4$ (X=20,40,60,80,100), exhibits the better specific capacitance than those of the cells fabricated with single active mass that is MSP-20. The enhanced properties of composite active mass could be caused by capability of $LiMn_2O_4$ powders. But the resistance was increase by proportionate in $LiMn_2O_4$ addition and when mixture ratio of the activated carbon and the $LiMn_2O_4$ being similar, to be low rather to the after where had become the maximum it came.

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