• 제목/요약/키워드: film crystallinity

검색결과 643건 처리시간 0.026초

화학증착법에 의해 제조된 Sb-doped $SnO_2$ 박막의 전기적 및 광학적 특성 (Electrical and Optical Properties of Sb-doped SnO2 Films Prepared by Chemical Vapor Deposition)

  • 이수원;김광호
    • 한국세라믹학회지
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    • 제29권4호
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    • pp.319-327
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    • 1992
  • Sb-doped SnO2 films were formed on Corning glass 7059 substrate by chemical vapor deposition using simulataneous hydrolysis of SnCl4 and SbCl5. Fairly good transparent conducting film with a low resistivity of ~6$\times$10-4{{{{ OMEGA }}cm and high average optical transparency above ~85% in the range of visible light was obtained at the deposition condition of 50$0^{\circ}C$ and input-gas ratio, [Psbcl5/Psncl4] of 0.05. Film conductivity was improved without loosing optical transparency at light doping of Sb and found to be due to the increase of electron concentration. However, high doping of Sb into SnO2 film largely deteriorated conductivity, optical transparency and crystallinity of the film.

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화학적 용액법에 의한 에피탁샬 $LaSrCoO_3/SrTiO_3(100)$ 구조의 제조 (Preparation of Epitaxial $LaSrCoO_3/SrTiO_3(100)$ Structures by The Chemical Solution Process)

  • 이형민;황규석;송종은;류현욱;강보안;윤연흠;김병훈
    • 한국세라믹학회지
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    • 제36권10호
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    • pp.1075-1079
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    • 1999
  • LaSrCoO3 thin films were spin-coated onto the SrTiO3(100) substrates by the chemical solution process. X-ray diffraction $\theta$-2$\theta$ scans and X-ray diffraction $\beta$ scans were used to determine the crystallinity and in -plane alignment behavior of the films. The X-ray diffraction pattern showed the film obtained by annealing at 80$0^{\circ}C$ was highly oriented. The X-ray diffraction pole-figure analysis and reciprocal-space mapping (2$\theta$-$\Delta$$\omega$ scans) of the resulting film showed that the film comprising the pseduocubic phase had an epitaxial relationship with the SriO3 substrate.

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The Crystalline Quality of Si Films Prepared by Thermal- and Photo-CVD at Low Temperatures

  • Chung, Chan-Hwa;Rhee, Shi-Woo;Moon, Sang-Heup
    • 한국진공학회지
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    • 제4권S1호
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    • pp.34-39
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    • 1995
  • Various silicon films were prepared by thermal- and UV photo-CVD processes. The reactants were SiH4, Si2H6, SiH2F2, SIF4, and H2. Silicon films grown at temperatures below $500 ^{\circ}C$ were either amorphous or crystalline depending on the process conditions, and the growth rates ranged between 5 and $80\AA$min. Crystallinity of the film was improved even at $250^{\circ}C$ when the film was grown by photo-CVD using fluoro-silanes as the reactants. Analysis of the film by RBS, SIMS, XRD, and ex-situ IR indicated that substrate surface was contaminated by oxygen and other impurities when the reactants contained neither hydrogen nor fluoro-silnanes, but when fluoro-silanes were used as reactants the silicon film was highly crystalline.

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Ultra low sheet resistance on poly silicon film by Excimer laser activation

  • Lim, Hyuck;Yin, Huaxiang;Xianyu, Wenxu;Kwon, Jang-Yeon;Zhang, Xiaoxin;Cho, Hans-S;Kim, Jong-Man;Park, Kyung-Bae;Kim, Do-Young;Jung, Ji-Sim;Noguchi, Takashi
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2005년도 International Meeting on Information Displayvol.II
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    • pp.1112-1115
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    • 2005
  • In this study, we performed excimer laser activation on Phosphorus or Boron doped a-Si (amorphous silicon) film. We've got a very low sheet resistance (Rs), Rs was 60 ohm/sq. with phosphorus doping and was 65 ohm/sq. with boron doping at each optimized laser irradiation condition. We've found Rs on activated thin film showed an unprecedented behavior in both cases, because Rs had a strong dependency on the crystallinity of the activated Si film.

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열처리조건과 기판이 $ZnGa_O_4:Mn$ 박막 형광체의 발광특성에 미치는 영향 (Effects of heat treatment and substrates on luminescent characteristics of $ZnGa_O_4:Mn$ thin film phosphor)

  • 정승묵;김영진
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 2004년도 춘계학술대회 논문집 디스플레이 광소자분야
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    • pp.181-184
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    • 2004
  • The green emitting phosphor, $ZnGa_2O_4:Mn$ thin film with spinel structure were deposited by rf magnetron sputtering. Thin film phosphors were heat-treated in nitrogen, vacuum and air atmosphere, respectively. The effects of the substrates, heat-treatment conditions and the sputtering parameters were investigated. The growing behavior and luminescent properties of thin films depend on the crystallinity of the substrates. The Ga/Zn atomic ratios and luminescent characteristics were dependent on the annealing conditions.

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폴리에틸렌 필름의 광가교에 의한 옥타데칸의 고정화 (Octadecane Fixation via Photocrosslinking of Polyethylene Film)

  • 윤득원;장진호
    • 한국염색가공학회지
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    • 제22권3호
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    • pp.214-219
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    • 2010
  • Polyethylene(PE) films were photocrosslinked by continuous UV irradiation. Benzophenone addition as low as 1wt% into the PE film increased the gel fraction up to 96%. The photocrosslinking was attributed to the recombination of PE radicals generated upon UV irradiation, which was enhanced by the hydrogen abstraction of the added benzophenone. Also the crossliked PE showed higher thermal stability and decreased crystallinity with increasing UV energy as shown by TGA, XRD and DSC analysis. It was also possible to fix 5.4% octadecane into PE by the photocrosslinking. The crosslinked PE film containing octadecane showed lower tensile strength and modulus coupled with higher extension compared to that without octadecane, which can be used as a new plasticizing method for the crosslinked PE film.

Thickness Dependence of the Electrical Properties in NiCr Thin Film Resistors Annealed in a Vacuum Ambient for π - type Attenuator Applications

  • Phuong Nguyen Mai;Lee Won-Jae;Yoon Soon-Gil
    • 한국전기전자재료학회논문지
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    • 제19권8호
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    • pp.712-716
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    • 2006
  • NiCr thin films prepared on $SiO_2/Si$ substrates at room temperature by magnetron co-sputtering technique and then annealed in a vacuum ambient $(3{\times}10^{-6}\;Torr)\;at\;400^{\circ}C$. The grain size and crystallinity of the films increased with film thickness. The resistivity of the films slightly decreases as the film thickness increases, Temperature coefficient resistance (TCR) exhibits positive values irrespective of film thickness and TCR in the range of 50 to 400 nm thickness shows suitable values for the application of 10 dB in ${\pi}-type$ attenuators.

기판온도 및 후 열처리에 따른 AZO(ZnO:Al) 박막의 특징 (Characteristics of AZO(ZnO:Al) thin film with the substrate temperature and post-annealing)

  • 김경환;조범진;금민종;손인환;최형욱;최명규
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 2005년도 하계학술대회 논문집 Vol.6
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    • pp.432-433
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    • 2005
  • In this study, Al doped ZnO(AZO) thin film were prepared on glass substrates by FTS(Facing Targets Sputtering) system. We investigated electrical, optical and structural properties of AZO thin film with the substrate temperature of the R.T, $100^{\circ}C$, $200^{\circ}C$ and the post-annealing. The crystallinity of AZO thin film was increased with increasing the substrate temperature and post-annealing temperature $600^{\circ}C$. The remarkable change of the resistivity with the substrate temperature didn't found and the resistivity with post-annealing was increased slightly.

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용액공정을 이용한 열처리된 산화아연 박막의 투명한 박막 트랜지스터 구현을 위한 전사방법 개발 (Development of Transfer Method for Transparent Thin Film Transistor of Heat-treated Zinc Oxide Thin Film by Solution Process)

  • 권순열;정동건;최영찬;이재용;공성호
    • 반도체디스플레이기술학회지
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    • 제17권2호
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    • pp.57-60
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    • 2018
  • Recently, Thin-film transistors (TFTs) are fundamental building blocks for state-of-the-art microelectronics, such as flat-panel displays and system-on-glass. Zinc oxide thin films have the advantage that they can grow at low temperature and can obtain high charge movility. Also the zinc oxide thin film can be used to control the resistance according to the oxygen content, so it is very easy to obtain the desired physical properties. In this paper, we fabricated a zinc oxide thin film on a polished copper substrate through a solution process, then improved the crystallinity through a geat treatment porcess, and studied to transfer it on a flexible substrate after the heat treatment was completed.

R.F Magnetron Sputtering법으로 제조한 TiO2 박막의 특성 (Characteristics of TiO2 Thin Films Fabricated by R.E, Magnetron Sputtering)

  • 추용호;최대규
    • 한국재료학회지
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    • 제14권11호
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    • pp.821-827
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    • 2004
  • Titanium oxide thin films were prepared on Si(100) substrates by R.F. magnetron reactive sputtering at $30\sim200watt$ R.F power range, and annealed at $600^{\circ}C\sim800^{\circ}C$ for 1 hour. The properties of $TiO_2$ thin films were analyzed using x-ray, ${\alpha}-step$, ellipsometer, scanning electron microscopy, and FT-IR spectrometer. Upon in-situ depositions, the initial phase of $TiO_2$ thin film showed non-crystalline phase at R.F. power $30\sim100$ watt. The crosssection of $TiO_2$ thin films were sbserved to be the columnar structure. With the increasing R.F power and annealing temperature, the grain size, crystallinity, refractive index, and void size of titanium oxides showed a tended to increase. The FT-IR transmittance spectra of titanium oxide thin films have the obsorption band of Ti-O bond, Si-O bond, Si-O-Ti bond and O-H bond. With the increase of R.F. power and annealing temperature, these films have the stronger bond structures. It is considered that such a phenomena is due to phase transition and good crystallinity