• 제목/요약/키워드: ICBD

검색결과 16건 처리시간 0.023초

PROPERTIES OF THE CRYSTALLINE POLYIMIDE FILM DEPOSITED BY IONIZED CLUSTER BEAM

  • Whang, Chung-Nam
    • 한국재료학회:학술대회논문집
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    • 한국재료학회 1992년도 추계학술발표강연 및 논문개요집
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    • pp.6-6
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    • 1992
  • Ionized cluster beam deposition (ICBD) technique has been employed to fabricate high-purity crystalline polyimide (PI) film. The pyromellitic dianhydride (PMDA) and oxydianiline (ODA) were deposited using dual ICB sources, Fourier trans forminfraredspectroscopy (FT-IR), X-ray photoemission spectroscopy (XPS), and Transmission electron microscopy (TEM)study show that the bulk and surface chemical properties and the crystalline structure are very sensitive to the ICBD conditions such as cluster ion acceleration voltage and ionization voltage, At optimum ICBD conditions, the PI films have a maximum imidization, negligible impurities(∼1% isoimide), and a good crystalline structure probably due to the high surface migration energy and surface cleaning effect. These characteristics are superior to those of films deposited by other techniques such as colvent cast, vapowr deposition, or sputtering techniques.

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촉매금속(Ni-Cu)의 적층 증착법에 의한 탄소나노튜브의 성장 (Growth of Carbon Nanotubes on Different Catalytic Substrates)

  • 배성규;이세종;조성진;이득용
    • 한국세라믹학회지
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    • 제41권3호
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    • pp.247-252
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    • 2004
  • 노튜브의 길이는 급격히 증가하였지만 촉매금속의 적층방법에 따른 탄소나노튜브의 성장 형태는 큰 차이가 없었다. 특히, ICBD 방법에 의해 Ni 촉매금속을 증착한 경우 다른 방법에 비하여 직선적인 탄소나노튜브가 관찰되었다. ^x Carbon nanotubes were grown on SiO$_2$/Si substrates by applying $C_2$H$_2$ gas through chemical vapor deposition process. It was found that carbon nanotubes were grown successfully on the substrates with catalytic films under 20 $\AA$ total thickness. The increase in reaction temperature from 50$0^{\circ}C$ to 80$0^{\circ}C$ resulted in longer carbon nanotube, but there was no clear tendencies with different types of catalytic layers. It was evident that carbon nanotubes became more straight on the substrate with Ni catalytic film produced by ICBD method.

ICBD 법에 의한 $ Y_2O_3$박막특성에 관한 연구 (Properties of $ Y_2O_3$ Thin Films Prepared by ICBD Method)

  • 전정식;문종;이상인;심태언;황정남
    • 한국진공학회지
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    • 제5권3호
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    • pp.245-250
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    • 1996
  • $Y_2O_3$ thin film on si(100) was successfully grown by ionized cluster beam(ICBD) technique at substrate temperature of around $500^{\circ}C$ and pressure of ~$10^{-5}$Torr.To prevent the oxidation of Si substrae, a very thin yttrium layer was deposited on Si before reactive depositing of oxygen and yttrium source. In asdeposited stage, b.c.c and h.c.p strucutres of $Y_2O_3$ were observed from S-ary analysis. From the observation of spots and ring patterns in selected area diffractin(SAD) patterns. crystallane formation and growth could be proceeded during the deposition. $Y_2O_3$/mixed layer/$SiO_2=170\AA/50\AA/10\AA$ structure were verified by high resolution transmition electron imcroscopy(HRTEM) image, and the formation of amorphous layer of SiO2 was discussed . Electricla charateristics of the film were also investigated . In as-deposited Pt/$Y_2O_3$/Si sturcuture, leakage current was less than $10^{-6}$A/$\textrm{cm}^2$ at 7MV/cm strength.

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ICBD법으로 증착된 Al 박막의 증착특성 연구 (A study on the deposition characteristics of the hi thin films deposited ionized cluster beam deposition)

  • 안성덕;김동원;천성순;강상원
    • 한국결정성장학회지
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    • 제7권2호
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    • pp.207-215
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    • 1997
  • Ionized Cluster Beam Deposition(ICBD)방법을 이용하여 Si(100)기판과 TiN(60 nm)/Si(100)기판위에 Al 박막을 증착하였다. 증착된 Al 박막의 증착특성은 $\alpha$-step, four-point-probe, XRD, SEM, AES 측정장치를 가지고 조사해 보았다. 도가니 온도가 증가함에 따라 Al 박막의 증착속도는 증가하였고 비저항 값은 감소하였다. 도가니 온도가 $1800^{\circ}C$인 경우 가속전압이 증가함에 따라 연속적이며 평평한 박막이 형성되고 비저항이 감소되었다. 최소의 비저항 값은 Si 기판에서는 가속전압이 4 kV일 때 3.4 $\mu \Omega \textrm {cm}$, TiN 기판에서는 가속전압이 2kV일 때 3.6 $\mu \Omega \textrm {cm}$. AES 분석결과 형성된 박막내에서는 불순물이 존재하지 않는 것을 알 수 있었다. 따라서 Al 박막의 비저항은 박막충의 미세구조에 의해 영향을 받는다.

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Ionizied Cluster Beam 방법으로 제작된 Polyimide 박막의 화학적 성질과 결정성 (Chemical and Crystalline Properties of Polyimide Film Deposited by Ionized Cluster Beam)

  • K.W. Kim;S.C. Choi;S.S. Kim;S.J. Cho;S.Y. Hong;K.H. Jeong;J.N. Whang
    • 한국진공학회지
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    • 제1권1호
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    • pp.139-144
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    • 1992
  • Ionized Cluster Beam(ICB) 방법을 이용하여 Polyimide(PI) 박막을 증착시켰다. 증 착된 PI 박막의 결정성과 이미드화의 정도를 투과전자현미경(TEM)과 적외선 분광 스펙트럼 (FT-IR)을 이용하여 분석하였다. 최적의 조건에서 증착된 PI 박막은 이미드화가 최대로 증 가하였고 결정구조를 가짐을 관찰할 수 있었다. 이것은 다른 방법으로 제작된 PI 박막과 비 교할 때 훨씬 우수한 것이다.

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