• Title/Summary/Keyword: hybrid film

Search Result 535, Processing Time 0.021 seconds

Life Time Characteristics of OLED Device with AlOx Passivation Film Deposited by RF Magnetron Sputtering (RF 마그네트론 스퍼터링으로 증착된 AlOx 봉지 박막을 갖는 OLED 소자의 수명 특성)

  • An, O-Jin;Ju, Sung-Hoo;Yang, Jae-Woong
    • Journal of the Korean institute of surface engineering
    • /
    • v.43 no.6
    • /
    • pp.272-277
    • /
    • 2010
  • We investigated the life time characteristics of OLED device with aluminium oxide ($AlO_x$) passivation film on glass substrate and polyethylene terephthalate (PET) substrate by RF magnetron sputtering for the transparent barrier film applied to flexible OLED device. Basic buffer layer was determined as $Alq_3$(500 nm)-LiF(300 nm)-Al(1200 nm), and the most suitable aluminium oxide ($AlO_x$) film have been formed when the partial volume ratio of oxygen was 20% and the sputtering power was 100 watt and the minimum thickness of buffer was $2\;{\mu}m$. $AlO_x$/epoxy hybrid film was also used as a effective passivation layer for the purpose of improving life time characteristics of OLED devices with the glass substrate and the plastic substrate. Besides, the simultaneous deposition of $AlO_x$/epoxy film on back side of PET could result in better improvement of life time.

Thickness dependence of grain growth orientation in MgB2 films fabricated by hybrid physical-chemical vapor deposition

  • Ranot, Mahipal;Kang, W.N.
    • Progress in Superconductivity and Cryogenics
    • /
    • v.15 no.2
    • /
    • pp.9-11
    • /
    • 2013
  • We have investigated the effect of thickness of the MgB2 film on the grain growth direction as well as on their superconducting properties. $MgB_2$ films of various thicknesses were fabricated on c-cut $Al_2O_3$ substrates at a temperature of $540^{\circ}C$ by using hybrid physical-chemical vapor deposition (HPCVD) technique. The superconducting transition temperature ($T_c$) was found to increase with increase in the thickness of the $MgB_2$ film. X-ray diffraction analysis revealed that the orientation of grains changed from c-axis to a-axis upon increasing the thickness of the $MgB_2$ film from 0.6 to 2.0 ${\mu}m$. $MgB_2$ grains of various orientations were observed in the microstructures of the films examined by scanning electron microscopy. It is observed that at high magnetic fields the 2.0-${\mu}m$-thick film exhibit considerably larger critical current density ($J_c$) as compared to 0.6-${\mu}m$-thick film. The results are discussed in terms of an intrinsic-pinning in $MgB_2$ similarly as intrinsic-pinning occurring in high-Tc cuprate superconductors with layered structure.

Microstructure and Wear Resistance of Ti-Me-N (Me=V, Nb and Si) Nanofilms Prepared by Hybrid PVD (Hybrid PVD로 제조된 Ti-Me-N (Me=V, Si 및 Nb) 나노 박막의 미세구조와 마모특성)

  • Yang, Young-Hwan;Kwak, Kil-Ho;Lee, Sung-Min;Kim, Seong-Won;Kim, Hyung-Tae;Kim, Kyung-Ja;Lim, Dae-Soon;Oh, Yoon-Suk
    • Journal of the Korean institute of surface engineering
    • /
    • v.44 no.3
    • /
    • pp.95-104
    • /
    • 2011
  • Ti based nanocomposite films including V, Si and Nb (Ti-Me-N, Me=V, Si and Nb) were fabricated by hybrid physical vapor deposition (PVD) method consisting of unbalanced magnetron (UBM) sputtering and arc ion plating (AIP). The pure Ti target was used for arc ion plating and other metal targets (V, Si and Nb) were used for sputtering process at a gas mixture of Ar/$N_2$ atmosphere. Mostly all of the films were grown with textured TiN (111) plane except the Si doped Ti-Si-N film which has strong (200) peak. The microhardness of each film was measured using the nanoindentation method. The minimum value of removal rate ($0.5{\times}10^{-15}\;m^2/N$) was found at Nb doped Ti-Nb-N film which was composed of Ti-N and Nb-N nanoparticles with small amount of amorphous phases.

Fabrication of Thin Film Dielectric by Hybrid Sol (Hybrid Sol을 이용한 박막 유전체 제작)

  • Kim, Yong-Suk;Yoo, Won-Hee;Chang, Byeung-Gyu;Oh, Yong-Soo
    • Korean Journal of Materials Research
    • /
    • v.17 no.4
    • /
    • pp.185-191
    • /
    • 2007
  • The purpose of this study is to evaluate the thin fihn dielectric made of hybrid sol, which consist of barium titanate powder, polymeric sol and other polymers. This sol will be used dielectric applied to small, thin electric passive components such as MLCC(Multi Layer Ceramic Condenser), resister, inductor. This sol is composed of mixed fine barium titanate powder and polymeric sol including Ba, Ti-precursor, solvent, chelating agent, chemical reaction catalyst, the additive sols to improve fired densification and temperature reliability. First at all, we mixed hybrid sol to be dispersed and be stabilized by ball milling for 24hrs. By spin coating method, we makes thin film dielectric on the convectional green sheet for MLCC. After heat treatments, we analyzes the structure morphology, physical, electrical properties and X5R Temperature properties.

Correlation between Leakage Current of Organic Treated Insulators and Grain Size of Pentacene Deposited film (유기물 처리 절연막의 누설전류 및 펜타센 증착 표면에 생긴 그레인 크기 사이의 상관관계)

  • Oh Teresa;Kim Hong-Bae;Son Jae-Gu
    • Journal of the Institute of Electronics Engineers of Korea SD
    • /
    • v.43 no.6 s.348
    • /
    • pp.18-22
    • /
    • 2006
  • The inspection of surface properties under n-octadecyltrichlorosilane treated $SiO_2$ film was carried out by current-voltage characteristic and the scanning electron microscope. The voltage at zero current in low electric field is the lowest at 0.3 % OTS treated $SiO_2$ film with hybrid type. $SiO_2$ films changed from inorganic to hybrid or organic properties according to the increase of OTS content. OTS treated $SiO_2$ films with hybrid properties decreased the leakage currents, and the grain size of pentacene deposited sample was also the most small at the hybrid properties. The perpendicular generation of pentacene molecular was related with the surface of insulators. The surface with hybrid properties decreased the grain size, but that with inorganic or organic properties increased the grain size.

Trend and Prospect of Thin Film Processing Technology (박막제조 기술의 동향과 전망)

  • Jeong, Jae-In;Yang, Ji-Hooon
    • Journal of the Korean Magnetics Society
    • /
    • v.21 no.5
    • /
    • pp.185-192
    • /
    • 2011
  • The technique of producing thin film plays a crucial role in modern science and technology as well as in industrial purposes. Numerous efforts have been made to get high quality thin film through surface treatment of materials. PVD (Physical Vapor Deposition) and CVD (Chemical Vapor Deposition) are two of the most popular deposition techniques used in both scientific study and industrial use. It is well known that the film deposited by PVD and CVD commonly possesses a columnar microstructure which affects many film properties. In recent years, various types of deposition sources which feature high material uses and excellent film properties have been developed. Electromagnetic levitation source appeared as an alternative deposition source to realize high deposition rate for industrial use. Complex film structures such as nano multilayer and multi-components have been prepared to achieve better film properties. Glancing angle deposition (GLAD) has also been developed as a technique to engineer the columnar structure of thin films on the micro- and nanoscale. In this paper, the trends and major issues of thin film technology based on PVD and CVD have been discussed together with the prospect of thin film technology.

A Implementation of the Linearized Channel Amplifier for Flight Model at Ku-Band (비행모델을 위한 Ku-Band 선형화 채널증폭기 구현)

  • Hong, Sang-Pyo;Lee, Kun-Joon;Jang, Jae-Woong
    • Journal of Satellite, Information and Communications
    • /
    • v.3 no.1
    • /
    • pp.1-7
    • /
    • 2008
  • This Paper studied the design and measured results of a flight model for Ku-Band Linearized Channel Amplifier (LCAMP) for communication satellite onboard system. All MMICs, i.e. Variable Gain Amplifier (VGA), Variable Voltage Attenuator (VVA) with analog/digital attenuator, Branch line Hybrid Coupler and Detector for Pre-distorter are fabricated using Thin-Film Hybrid process. The performance of the fabricated module is verified through Radio Frequency circuit simulations and electrical function test in space environment for flight model at 12.25 to 12.75 GHz.

  • PDF

The hybrid film characteristics of UV-curable organic-inorganic coating solutions (자외선 경화형 유/무기 코팅제의 복합 필름 특성)

  • Lee, Chang-Ho;Kim, Sung-Rae;Lee, Jong-Dae
    • Journal of the Korean Applied Science and Technology
    • /
    • v.28 no.2
    • /
    • pp.240-246
    • /
    • 2011
  • UV-Curable hybrid coatings were synthesized to improve the surface properties of plastic film. Organic-inorganic coating solutions were prepared by the sol-gel method using urethane-acrylate oligomer, acrylate monomer, photo initiator and tetraethoxysilane (TEOS). Methacryloyloxypropyltrimethoxysilane(MPTMS) was used as a silane coupling agent to improve chemical interaction between inorganic phases and UV curable acrylate. In this study, the surface hardness and adhesive properties were improved with the use of inorganic component. The experimental results showed that UV-Curable hybrid films containing aliphatic urethane oligomer, hexanedioldiacrylate, trimethylolpropanetriacrylate, hydroxy dimethyl acetophenone exhibited good surface properties. Also, the optimum curing conditions were investigated.

Preparation and Properties of Polyimides Having Highly Flexible Linkages and Their Nanocomposites with Organoclays

  • Cho, Young-Ho;Park, Jong-Min;Park, Yun-Heum
    • Macromolecular Research
    • /
    • v.12 no.1
    • /
    • pp.38-45
    • /
    • 2004
  • A highly flexible polyimide (PI) was synthesized successfully from ethylene glycol bis(anhydrotrimellitate) (TMEG) and 1,3-bis(4-aminophenoxy)benzene (TPER) for its application in electronics. To enhance the thermal stability and mechanical properties of this novel PI, we prepared PI nanocomposite films using nanoparticles of clays that had been treated with organic intercalating agents (organoclays). We used two types of organoclays: montmo-rillonite (MMT) treated with hexadecylamine (C$\_$16/) and MMT treated with dimethyl dihydrogenated tallow quaternary ammonium (l5A). PI/organoclay hybrid films were obtained by first preparing poly(amic acid) (PAA)/organoclay films and then converting the PAA to polyimide by thermal conversion. PAA was characterized by FT-IR and $^1$H-NMR spectroscopy and the conversion of PAA to PI was confirmed by FT-IR spectroscopy. We analyzed the dispersion of the organoclays in the PI film by X-ray diffraction. The thermal stability and mechanical properties of the hybrid films were also investigated.

Hybrid Organic-Inorganic Films Fabricated Using Atomic and Molecular Layer Deposition Techniques

  • George, Steven M.
    • Proceedings of the Korean Vacuum Society Conference
    • /
    • 2013.08a
    • /
    • pp.75.1-75.1
    • /
    • 2013
  • Atomic layer deposition (ALD) and molecular layer deposition (MLD) are based on sequential, self-limiting surface reactions that produce atomic layer controlled and conformal thin film growth. ALD can deposit inorganic films and MLD can deposit films containing organics. ALD and MLD can be used together to fabricate a wide range of hybrid organic-inorganic alloy films. The relative fraction of inorganic and organic constituents can be defined by controlling the ratio of the ALD and MLD reaction cycles used to grow the film. These hybrid films can be tuned to obtain desirable mechanical, electrical and optical properties. This talk will focus on the growth and properties of metal alkoxide films grown using metal precursors and various organic alcohols that are known as "metalcones". The talk will highlight the tunable mechanical properties of alucone alloys grown using Al2O3 ALD and alucone MLD and the tunable electrical conductivity of zincone alloys grown using ZnO ALD and zincone MLD with DEZ and hydroquinone as the reactants.

  • PDF