• 제목/요약/키워드: Silicon thin

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펜타센을 활성층으로 사용하는 유기 TFT 제작 (Fabrication of Pentacene-Based Organic Thin Film Transistor)

  • 정민경;김도현;구본원;송정근
    • 대한전자공학회:학술대회논문집
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    • 대한전자공학회 2000년도 하계종합학술대회 논문집(2)
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    • pp.44-47
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    • 2000
  • 본 연구는 α-Si:H TFT(Amorphous Silicon Thin Film Transistor)를 대체 할 펜타센을 활성층으로 사용하는 박막 트랜지스터를 제작에 관한 것이다. 유기 박막 트랜지스터는 유기발광소자와 함께 유연한 디스플레이에 응용된다. 펜타센 박막 트랜지스터의 제작은 채널 길이 25㎛, 70㎛, 소스, 드레인, 게이트 전극으로 Au을 lift off 공정으로 제작하였으며, 펜타센은 OMBD(Organic Molecular Beam Deposition)로 기판온도를 80℃로 유지하여 증착하였다. 제작된 소자로부터 트랜지스터 전류-전압 특성곡선을 측정하였고, 게이트에 의한 채널의 전도도가 조절됨을 확인하였다. 그리고, 전달특성곡선으로부터 문턱전압과 전계효과 이동도를 추출하였다.

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Atomic layer deposition으로 증착된 Ta2O5 박막의 전도기구에 대한 UV ozone annealing 효과 (Effects of UV ozone annealing on conduction mechanism in Ta2O5 thin films deposited by atomic layer deposition)

  • 엄다일;전인상;노상용;황철성;김형준
    • 한국재료학회:학술대회논문집
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    • 한국재료학회 2003년도 추계학술발표강연 및 논문개요집
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    • pp.57-57
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    • 2003
  • High dielectric constant materials (high K) have attracted a great deal of interest because of the dramatic scaling down of DRAM capacitor reaching its physical limit in terms of reduction of thickness. Among high-K materials that can replace silicon dioxide, tantalum pentoxide (Ta2O5) thin film, with their high dielectric constant (∼25) and good step coverage, is the candidate of choice.

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안티몬 박막을 도우핑소스로 찬 다결정실리콘 도우핑 (Polycrystalline silicon doping using antimony thin film as doping source)

  • 이인찬;마대영;김상현;김영진;김기완
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 1993년도 추계학술대회 논문집
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    • pp.55-59
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    • 1993
  • In this study, we developed new process for doping poly-Si film. Sb(antimony) thin film was used as doping source. Sb was evaporated on poly-Si film deposited by LPCVD fallowed by annealing. We investigate sheet resistance variation with annealing temperature and time. Finally we adapted this process to poly-Si TFT fabrication.

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Advances in Materials for Printed Transistors

  • Ong, Beng S.
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2008년도 International Meeting on Information Display
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    • pp.1065-1066
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    • 2008
  • Printed thin-film transistors (TFTs) have received profound interests as an alternative to their silicon counterparts for use in fabricating next-Gen microelectronics by virtue of projected low manufacturing cost and certain salient features (e.g., thin and lightweight characteristics, structural flexibility, etc.) that printed TFTs bring to device architecture. The economic advantages stem from engaging low-cost printing techniques (e.g., screen printing, gravure, flexography, etc.) for deposition and patterning in place of traditionally costly high-vacuum, high-temperature photolithographic processes. To render printing TFTs possible, solution processable materials are necessary.

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RF플라즈마 CVD법에 의한 Diamond합성 (Synthesis of diamond thin films by R.F plasma CVD)

  • 박상현;이덕출
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 1989년도 추계학술대회 논문집 학회본부
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    • pp.149-150
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    • 1989
  • Diamond thin films were synthesised from the mixed gases of $CH_4$ and $H_2$ on silicon substrate by R.F plasma CVD and films deposited were investigated by SEM. XRD and Raman spectroscope. From these result, cubo-octahedral diamond particles were synthesised under the following condition: methane concentration. 1.0vol% ; pressure of reactor, 0.3torr ; R.F power, 500W ; reaction time, 20hr.

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Effects of Hot Rolling on Microstructures and Magnetic Properties

  • Hong, Byung-Deug;Kim, Jae-Kwan;Cho, Kyung-Mox
    • Journal of Magnetics
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    • 제11권3호
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    • pp.111-114
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    • 2006
  • We electroplated copper-cobalt thin films on a silicon substrate, which had 150 nm thick copper seed layer. The adhesion between the two metallic layers could be increased by utilizing a proper organic additive, pulse plating technique, and high temperature annealing. The thin films exhibited columnar growth of the deposits and enhanced adhesion. This is attributed to the grain growth mechanism introduced by the additive and annealing.

An Offset-Compensated LVDS Receiver with Low-Temperature Poly-Si Thin Film Transistor

  • Min, Kyung-Youl;Yoo, Chang-Sik
    • ETRI Journal
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    • 제29권1호
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    • pp.45-49
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    • 2007
  • The poly-Si thin film transistor (TFT) shows large variations in its characteristics due to the grain boundary of poly-crystalline silicon. This results in unacceptably large input offset of low-voltage differential signaling (LVDS) receivers. To cancel the large input offset of poly-Si TFT LVDS receivers, a full-digital offset compensation scheme has been developed and verified to be able to keep the input offset under 15 mV which is sufficiently small for LVDS signal receiving.

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Formation of Buffer Layer on Mica for Application to Flexible Thin Film Transistors

  • Oh, Joon-Seok;Lee, Seung-Ryul;Lee, Jin-Ho;Ahn, Byung-Tae
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2007년도 7th International Meeting on Information Display 제7권1호
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    • pp.749-751
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    • 2007
  • A buffer layer consisting of $SiO_x/Ta/Ti$ has been developed in order to overcome the adhesion and stress problems between poly-Si film and mica. Polycrystalline silicon thin film transistor was successfully fabricated on the mica and transferred to a flexible plastic substrate.

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초박막 산화막 MOS 캐패시터에서 전자파 간섭의 극성 효과 (The polarity effect of electronic waves interference in the ultra thin oxide MOS capacitor)

  • 강정진
    • E2M - 전기 전자와 첨단 소재
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    • 제8권5호
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    • pp.601-605
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    • 1995
  • This study was concerned, after the oxide films(50 [.angs.]) were grown in a furnace and the MOS capacitor fabricated, with experimental comparison and verification about the Interference Effect of Electronic Waves in the ultra thin oxide/silicon interface. The average error was about 0.8404[%] in n'gate/p-sub and about 0.2991[%] in p$^{+}$gate/p-sub. Therefore, it was predicted that the Interference Effect of Electronic Waves can overcome somewhat according to the gate polarity.

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마그네트론 스퍼터에 의한 Carbon Nitride 박막의 합성 및 특성에 관한 연구 (A Study on the Synthesis and Characterization of Carbon Nitride Thin Films by Magnetron Sputter)

  • 박구범
    • 전기학회논문지P
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    • 제52권3호
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    • pp.107-112
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    • 2003
  • Amorphous carbon nitride thin films have been deposited on silicon (100) by reactive magnetron sputtering method. The basic depositon parameters varied were the r.f. power(up to 250 W), the deposition pressure in the reactor(up to 100 mtorr) and Ar:$N_2$ gas ratio. FT-IR and X-ray photoelectron spectra showed the presence of different carbon-nitrogen bonds in the films. The surface topography of the films was studied by scanning electron microscopy(SEM) and atomic force microscopy(AFM).