• Title/Summary/Keyword: facing target sputtering

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Plasma Characterization of Facing Target Sputter System for Carbon Nitride Film Deposition

  • Lee, Ji-Gong;Lee, Sung-Pil
    • Transactions on Electrical and Electronic Materials
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    • v.5 no.3
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    • pp.98-103
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    • 2004
  • The plasma properties in the facing target sputtering system during carbon nitride film deposition have been investigated. The ionized nitrogen species of the deposited films increased with increasing discharge current and were independent of the nitrogen pressure. The nitrogen content in the films did not vary significantly with the variation of nitrogen gas. The electron temperature was high close to that in the inter-cathode region, reduced as the electrons moved away from the most intense region of magnetic confinement and increased again outside this region. Calculations based on the film composition showed that the ion to carbon atom ratio at the substrate was about 50 and that the ratio between the ionized and neutral nitrogen molecules was about 0.25.

The Electrical and Optical Properties of Ga-doped ZnO Films Prepared by Using Facing Target Sputtering System (대향 타겟식 스퍼터링 방법에 의해 성막된 Ga-doped ZnO 박막의 전기 광학적 성질)

  • Choi, Myung Gyu;Bae, Kang;Seo, Sung-Bo;Kim, Dong-Young;Kim, Hwa-Min
    • Journal of the Korean Institute of Electrical and Electronic Material Engineers
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    • v.26 no.5
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    • pp.385-390
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    • 2013
  • $(Ga_2O_3)_x(ZnO)_{100-x}$ (GZO) films were prepared at room temperature by using a facing target sputtering (FTS) system and their electrical resistivites was investigated as a function of the $Ga_2O_3$ content. The GZO film with an atomic ratio of $Ga_2O_3$ of x= 7 wt.%, shows the lowest resistivity of $7.5{\times}10^{-4}{\Omega}{\cdot}cm$. The GZO films were also prepared at various substrate temperatures from room temperature to $300^{\circ}C$, and their electrical resistivity was found to be improved as the substrate temperature was increased, A very low resistivity of $2.8{\times}10^{-4}{\Omega}{\cdot}cm$ that is almost comparable with that of ITO film was obtained in the GZO films prepared at the substrate temperature of $300^{\circ}C$ by using the FTS.

Electrical and optical properties of ZnO : Al thin films deposited by Facing Targets Sputtering (대향타겟스퍼터법으로 증착된 ZnO : Al 박막의 전기적 광학적 특성)

  • Yang, J.S.;Seong, H.V.;Keum, M.J.;Park, Y.W.;Ka, C.H.;Kim, K.H.
    • Proceedings of the KIEE Conference
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    • 2001.07c
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    • pp.1478-1480
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    • 2001
  • ZnO : Al transparent conductive thin films were prepared by facing targets sputtering system with a DC power supply which can deposit a high quality thin films and control deposition condition in all range of $O_2$ gas ratio using ZnO target containing 8 at% of Al. Sputtering was carried out at a substrate temperature of R T with a DC current of 0.6 A and $O_2$ flow rate of 0 $\sim$ 0.9. The characteristics of ZnO : Al thin films was investigated by $\alpha$-step, four point probe, X-ray diffraction and UV/VIS spectrometer.

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Characterization of AZO thin films grown on various substrates by using facing target sputtering system

  • Lee, Chang-Hyeon;Son, Seon-Yeong;Bae, Gang;Lee, Chang-Gyu;Kim, Hwa-Min
    • Proceedings of the Korean Vacuum Society Conference
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    • 2015.08a
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    • pp.123-123
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    • 2015
  • Al doped ZnO(AZO) films as a transparent conductive oxide (TCO) electrode were deposited on glass, polyethylene naphthalate (PEN) and polyethylene terephthalate (PET) at room temperature by a conventional rf-magneton sputtering (CMS) and a facing target sputtering (FTS) using Al2O3 and ZnO targets. In order to investigation of AZO properties, the structural, surface morphology, electrical, and optical characteristics of AZO films were respectively analyzed. The resistivities of AZO films using FTS system were $6.50{\times}10-4{\Omega}{\cdot}cm$ on glass, $7.0{\times}10-4{\Omega}{\cdot}cm$ on PEN, and $7.4{\times}10-4{\Omega}{\cdot}cm$ on PET substrates, while the values of AZO films using CMS system were $7.6{\times}10-4{\Omega}{\cdot}cm$ on glass, $1.20{\times}10-3{\Omega}{\cdot}cm$ on PEN, and $1.58{\times}10-3{\Omega}{\cdot}cm$ on PET substrates. The AZO-films deposited by FTS system showed uniform surface compared to those of the films by CMS system. We thought that the films deposited by FTS system had low stress due to bombardment of high energetic particles during CMS process, resulted in enhanced electrical conductivity and crystalline quality by highly c-axis preferred orientation and closely packed nano-crystalline of AZO films using FTS system.

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Preparation of Transparent conductive oxide cathode for Top-Emission Organic Light-Emitting Device by FTS system and RF system

  • Hong, Jeong-Soo;Park, Yong-Seo;Kim, Kyung-Hwan
    • Journal of the Semiconductor & Display Technology
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    • v.9 no.3
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    • pp.23-27
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    • 2010
  • We prepared Al doped ZnO thin film as a top electrode on a glass substrate with a deposited $Alq_3$ for the top emission organic Light emitting device (TEOLED) with facing target sputtering (FTS) method and radio-frequency (RF) sputtering method, respectively. Before the deposition of AZO thin film, we evaporated the $Alq_3$ on glass substrate by thermal evaporation. And we evaluated the damage of organic layer. As a result, PL intensity of $Alq_3$ on grown by FTS method showed higher than that of grown by RF sputtering method, so we found that the FTS showed the lower damage sputtering than RF sputtering. Therefore, we can expect the FTS method is promising the low-damage sputtering system that can be used as a direct sputtering on the organic layer.

A study on the properties of AZO(ZnO:Al) thin film with a variety of targets (타겟 종류에 따른 AZO(ZnO:Al) 박막 특성에 관한 연구)

  • Kim, Hyun-Woong;Keum, Min-Jong;Son, In-Hwan;Kim, Kyung-Hwan
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2004.05a
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    • pp.98-101
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    • 2004
  • AZO(ZnO:Al) thin film were prepared by FTS(Facing Target Sputtering) system. Change the sputtering conditions, AZO thin film deposited the lower resistivity(<$10-4{\Omega}cm$) so it can use to be a display application electrode. In this study, the electrical and crystallographic effects of target type have been investigated. The crystal structure was studied by XRD and the resistivity of AZO thin film was obtained by the four-point probe.

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TOLED 용 ITO 음전극 제작 특성

  • Kim Hyeon-Ung;Geum Min-Jong;Seo Hwa-Il;Kim Gwang-Seon;Kim Gyeong-Hwan
    • Proceedings of the Korean Society Of Semiconductor Equipment Technology
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    • 2005.09a
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    • pp.106-109
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    • 2005
  • The ITO thin films for Top-Emitting Organic Light Emitting Devices (TOLEDs) were prepared on cell(LiF/Organic Layer/Bottom Electrode : ITO ) by FTS (Facing Targets Sputtering) system under different sputtering conditions which were varying gas pressure, input current and distance of target to target($D_{T-T}$). As a function of sputtering conditions, I-V characteristics of prepared ITO thin films on cell were measured by 4156A (HP). In the results, when the In thin films were deposited at $D_{T-T}$ 70mm and working pressure 1mTorr, the leakage current of ITO/cell was about 11[V] and 5E-6[$mA/cm^2$].

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A Study on the Glow Discharge Characteristics of Facing Target Plasma Process (대향 음극형 플라즈마 프로세스의 글로우 방전특성에 관한 연구)

  • Park, Chung-Hoo;Cho, Jung-Soo;Kim, Kwang-Hwa;Sung, Youl-Mool
    • The Transactions of the Korean Institute of Electrical Engineers
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    • v.43 no.3
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    • pp.478-484
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    • 1994
  • Facing target dc sputtering system developed by Hoshi et al. has simple configuration and high deposition rate under moderate substrate temperature in the range of pressure 5x10S0-4T - 1x10S0-2T torr. In this system, magnetic field should be applied perpendicular to the target surface in order to confine high energy secondary electrons between two targets. Because of this magnetic field, the glow discharge characteristics are very different from dc planar diode system showing some unstable discharge region. In this paper, the glow discharge characteristics of this system have been studied under the condition of Ti targets with Ar-NS12T(10%) as working gas. It is found that this system has stable discharge region under the discharge current density of 15-30(mA/cmS02T). The plasma density and electron temperature are in the range of 10S010Y - 10S011T(CMS0-3T) and 2.5-5(eV), respectively.