• 제목/요약/키워드: annealing ambient

검색결과 319건 처리시간 0.034초

PLD로 제작한 Si 박막에서의 광학적 특성분석 (Optical properties of Si thin films grown by PLD)

  • 배상혁;이상렬
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 2000년도 추계학술대회 논문집
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    • pp.532-534
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    • 2000
  • Si thin films on p-type (100) Si substrate have been fabricated by pulsed laser deposition technique using a Nd:YAG laser. The pressure of the environmental gas during deposition was varied from 1 to 3 Torr. After deposition, Si thin film has been annealed again at nitrogen ambient. Strong violet-indigo photoluminescence have been observed from Si thin film annealed in nitrogen ambient gas. As increasing environmental gas pressure, weak green and red emissions from annealed Si thin films also observed by photoluminescence.

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PLD로 증착한 ZnO 박막의 후열처리 효과 연구 (Effect of post-annealing treatment on the properties of ZnO thin films grown by PLD)

  • 배상혁;이상렬
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 2000년도 춘계학술대회 논문집 디스플레이 광소자 분야
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    • pp.125-128
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    • 2000
  • ZnO thin films on silicon substrates have been deposited by pulsed laser deposition technique(PLD). A Nd:YAG laser was used with the wavelength of 355 nm. In order to investigate the effect of oxygen post-annealing treatment on the property of ZnO thin films, deposited film has been annealed at the substrate temperature of $440^{\circ}C$. After post-annealing treatment in the oxygen ambient, the stoichiometry of ZnO film has been characterized be improved which results in higher UV emission intensity of photoluminescence.

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Forming Gas Post Metallization Annealing of Recessed AlGaN/GaN-on-Si MOSHFET

  • Lee, Jung-Yeon;Park, Bong-Ryeol;Lee, Jae-Gil;Lim, Jongtae;Cha, Ho-Young
    • JSTS:Journal of Semiconductor Technology and Science
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    • 제15권1호
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    • pp.16-21
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    • 2015
  • In this study, the effects of forming gas post metallization annealing (PMA) on recessed AlGaN/GaN-on-Si MOSHFET were investigated. The device employed an ICPCVD $SiO_2$ film as a gate oxide layer on which a Ni/Au gate was evaporated. The PMA process was carried out at $350^{\circ}C$ in forming gas ambient. It was found that the device instability was improved with significant reduction in interface trap density by forming gas PMA.

사파이어 기판 위에 증착된 ZnO 박막의 후열처리에 따른 발광특성 연구 (Effects of post-annealing treatment at various temperature on the light emission properties of ZnO thin films on sapphire)

  • 강홍성;심은섭;강정석;김종훈;이상렬
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 2001년도 하계학술대회 논문집
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    • pp.119-122
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    • 2001
  • ZnO thin films on (001) sapphire substrates have been deposited by pulsed laser deposition(PLD) technique at the oxygen pressure of 350 mTorr. In order to investigate the effect of post-annealing treatment with oxygenn pressure of 350 mTorr on the optical property of ZnO thin films, films have been annealed at various substrate temperatures after deposition. After post-annealing treatment in the oxygen ambient, the optical properties of the ZnO thin films were characterized by PL(Photoluminescence) and structural properties of the ZnO were characterized by XRD, and have investigated structural property and optical property for application of light emission device.

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Annealing effects on the characteristics of Sputtered ZnO films for ZnO-based thin-film transistors

  • Park, Yong-Seob;Kim, Han-Ki
    • 한국진공학회:학술대회논문집
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    • 한국진공학회 2010년도 제39회 하계학술대회 초록집
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    • pp.112-112
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    • 2010
  • Zinc Oxide (ZnO) thin-films were deposited according to the magnetron sputtering method. The deposited ZnO films were annealed with RTA equipment at various annealing temperatures in an vacuum ambient. The influence of the annealing temperature on the structural, electrical, and optical properties of the ZnO films was experimentally investigated, and the effect of conductivity of the ZnO active layer on the device performance of the oxide-TFT was tested. As a result, an increase of the annealing temperature was attributed to improvements of crystallinity in ZnO films. The grain size was found to lead to an increase of conductivity in the ZnO films. Fabricated ZnO TFTs with annealed ZnO active layer provided good performance in the TFT devices. Consequently, the performance of the TFT was determined by the conductivity of the ZnO film, which was related to the structural properties of the ZnO film.

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The Effect of Thermal Annealing Process on Fermi-level Pinning Phenomenon in Metal-Pentacene Junctions

  • Cho, Hang-Il;Park, Jin-Hong
    • 한국진공학회:학술대회논문집
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    • 한국진공학회 2016년도 제50회 동계 정기학술대회 초록집
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    • pp.290.2-290.2
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    • 2016
  • Recently, organic thin-film transistors have been widely researched for organic light-emitting diode panels, memory devices, logic circuits for flexible display because of its virtue of mechanical flexibility, low fabrication cost, low process temperature, and large area production. In order to achieve high performance OTFTs, increase in accumulation carrier mobility is a critical factor. Post-fabrication thermal annealing process has been known as one of the methods to achieve this by improving the crystal quality of organic semiconductor materials In this paper, we researched the properties of pentacene films with X-Ray Diffraction (XRD) and Atomic Force Microscope (AFM) analyses as different annealing temperature in N2 ambient. Electrical characterization of the pentacene based thin film transistor was also conducted by transfer length method (TLM) with different annealing temperature in Al- and Ti-pentacene junctions to confirm the Fermi level pinning phenomenon. For Al- and Ti-pentacene junctions, is was found that as the surface quality of the pentacene films changed as annealing temperature increased, the hole-barrier height (h-BH) that were controlled by Fermi level pinning were effectively reduced.

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80nm DRAM의 고압중수소 열처리에 따른 전기적 신뢰성 특성 영향 (Effect of High Pressure Deuterium post-annealing Annealing on the Electrical and Reliability properties of 80nm DRAM)

  • 장효식;최균;서재범;홍성주;장만;황현상
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 2008년도 추계학술대회 논문집 Vol.21
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    • pp.117-118
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    • 2008
  • High-pressure deuterium annealing process is proposed and investigated for enhanced electrical and reliability properties of 512Mb DDR2 DRAM without increase in process complexity. High pressure deuterium annealing (HPDA) introduced during post metal anneal (PMA) improves not only DRAM performance but also reliability characteristics of MOSFET. Compared with a control sample annealed in a conventional forming gas, additional annealing in a high pressure deuterium ambient at $400^{\circ}C$ for 30 min decreased G1DL current and junction leakage. The improvements can be explained by deuterium incorporation at $SiO_2$/Si substrate interface near isolation trench edge.

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Temperature Dependence on Structural, Tribological, and Electrical Properties of Sputtered Conductive Carbon Thin Films

  • Park, Yong-Seob;Hong, Byung-You;Cho, Sang-Jin;Boo, Jin-Hyo
    • Bulletin of the Korean Chemical Society
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    • 제32권3호
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    • pp.939-942
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    • 2011
  • Conductive carbon films were prepared at room temperature by unbalanced magnetron sputtering (UBMS) on silicon substrates using argon (Ar) gas, and the effects of post-annealing temperature on the structural, tribological, and electrical properties of carbon films were investigated. Films were annealed at temperatures ranging from $400^{\circ}C$ to $700^{\circ}C$ in increments of $100^{\circ}C$ using a rapid thermal annealing method by vacuum furnace in vacuum ambient. The increase of annealing temperature contributed to the increase of the ordering and formation of aromatic rings in the carbon film. Consequently, with increasing annealing temperature the tribological properties of sputtered carbon films are deteriorated while the resistivity of carbon films significantly decreased from $4.5{\times}10^{-3}$ to $1.0{\times}10^{-6}\;{\Omega}-cm$ and carrier concentration as well as mobility increased, respectively. This behavior can be explained by the increase of sp2 bonding fraction and ordering $sp^2$ clusters in the carbon networks caused by increasing annealing temperature.

급속 후 열처리 및 실리콘기판 배향에 따른 MOCVD-TiO2박막의 구조적.전기적 특성 (Effect of Rapid Thermal Annealing and Orientation of Si Substrate on Structural and Electrical Properties of MOCVD-grown TiO2 Thin Films)

  • 왕채현;최두진
    • 한국세라믹학회지
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    • 제35권1호
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    • pp.88-96
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    • 1998
  • The structural and electrical properties of titanium dioxide(TiO2) thin films deposited on p-type (100) si and 4$^{\circ}$off(100) Si substartes by metalorganic chemical vapor deposition (MOCVD) have been studied with post rapid thermal annealing. TiO2 thin films of anatase phase were grown at 300-500$^{\circ}C$ using titanium post rapid thermal annealing at a temperature of 800$^{\circ}C$ for 30sec. rutile phase was observed in the condition of the deposition temperature over 350$^{\circ}C$ in the ambient air atmosphere and at 500$^{\circ}C$ in cacuu,. SEM and AFM study show-ed surface roughness were increased slightly from 40${\AA}$to 55${\AA}$ after annealing due to grain growth and phase transformation. From capacitane-voltage measurement of Al/TiO2./p-Si structure after annealing we obtained ideal capacitance-voltage characteristics of MOS structure with dielectric constant of 16-22 in case of (100) Si and about 30- in case of 4$^{\circ}$off(100) Si but showed the higher leakage current.

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Effect of Vacuum Annealing on Thin Film Nickel Silicide for Nano Scale CMOSFETs

  • Zhang, Ying-Ying;Oh, Soon-Young;Kim, Yong-Jin;Lee, Won-Jae;Zhong, Zhun;Jung, Soon-Yen;Li, Shi-Guang;Kim, Yeong-Cheol;Wang, Jin-Suk;Lee, Hi-Deok
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 2006년도 하계학술대회 논문집 Vol.7
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    • pp.10-11
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    • 2006
  • In this study, the Ni/Co/TiN (6/2/25 nm) structure was deposited for thermal stability estimation. Vacuum (30 mTorrs) annealing was carried out to compare with furnace annealing in nitrogen ambient. The proposed Ni/Co/TiN structure exhibited low temperature silicidation and wide range of rapid thermal process (RTP) windows. The sheet resistance was too high to measure after furnace annealing at $600^{\circ}C$ due to the thin thickness (15 nm) of the nickel silicide. However, the sheet resistance maintained stable characteristics up to $600^{\circ}C$ for 30 min after vacuum annealing. Therefore, the low resistance of thin film nickel silicide was obtained by vacuum annealing at $600^{\circ}C$.

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