• Title/Summary/Keyword: source/drain

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Tunneling Layer의 두께 변화에 따른 유기 메모리의 특성

  • Kim, Hui-Seong;Lee, Bung-Ju;Sin, Baek-Gyun
    • Proceedings of the Korean Vacuum Society Conference
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    • 2013.02a
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    • pp.366-366
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    • 2013
  • 건식 박막증착 공정인 플라즈마 중합법을 이용하여 유기 재료인 Styrene을 절연 박막으로 제작하였다. 플라즈마 중합된 Styrene (ppS) 절연 박막의 정밀한 공정 제어를 위해 bubbler와 circulator를 이용하여 습식 공정과 비교하여도 절연 특성이 뛰어난 pps 절연 박막을 증착하고, 이를 활용하여 gate 전극으로 ITO, insulator layer로 pps, floating gate로 Au, tunneling layer로 ppMMA와 pps, semiconductor로 Pentacene, source/drain 전극으로 Au를 사용한 비휘발성 메모리 소자를 제작하였다. ppMMA와 pps의 서로 다른 tunneling layer의 두께 변화에 따른 비휘발성 메모리 특성 변화를 연구하였다.

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Improved Electrical Properties of Polysilicon TFT Using Rapid Thermal Processing (급속열처리 방식을 이용한 다결정 실리콘 소자의 형성된 전기적 특성)

  • 홍찬희;박창엽;이희국
    • Journal of the Korean Institute of Telematics and Electronics
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    • v.27 no.12
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    • pp.1865-1869
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    • 1990
  • N-Channel polysilicon MOSFETs (W/L=20/1.5, 3, 5.10\ulcorner) were fabricated using RTP (Rapid Thermal Processor) and hydrogen passivation. The N+ source, drain and gate were annealed and recrystallized using RTP at temperature of 1000\ulcorner-1100\ulcorner. But the active areas were not specially crystallized before growing the gate oxide. Without the hydrogen passivarion, excellent transistor characteristics (ON/OFF=5.10**6, S=85MV/DEC, IL=51pA/\ulcorner) were obtained for 1.5\ulcorner MOSFET. Also the transistor characteristics were improved by hydrogen passivation.

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Fabrication of Flexible Inorganic/Organic Hybrid Thin-Film Transistors by All Ink-Jet Printed Components on Plastic Substrate

  • Kim, Dong-Jo;Lee, Seong-Hui;Moon, Joo-Ho
    • 한국정보디스플레이학회:학술대회논문집
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    • 2008.10a
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    • pp.1463-1465
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    • 2008
  • We report all-ink-jet printed inorganic/organic hybrid TFTs on plastic substrates. We have investigated the optimal printing conditions to make uniform patterned layers of gate electrode, dielectrics, source/drain electrodes, and semiconductor as a coplanar type TFT in a successive manner. All ink-jet printed devices have good mechanical flexibility and current modulation characteristic even when bent.

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High Temperature Characteristics of submicron GaAs MESFETs (고온 동작 MESFET 의 온도특성 해석)

  • 원창섭;유영한;신훈범;한득영;안형근
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2002.07a
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    • pp.379-382
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    • 2002
  • GaAs has wide band gap, Therefore that malarial can used high Temperature application. in this paper explain to current-voltage characteristics of thermal effect. we experiment on thermal test of current-voltage characteristics and gate leakage current with real device. As a result, we propose a current-volatage characteristics model. that model base on gate leakage current, and gate leakage current influence gate source voltage.

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Electrical characteristics of Schottky source/drain p-MOSFET on SPC-TFT substrate

  • Oh, Jun-Seok;Cho, Won-Ju
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2010.06a
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    • pp.353-353
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    • 2010
  • 본 논문에서는 소스와 드레인의 형성에 있어서 implantation 이 아닌 silicide를 형성시켜서 최고온도 $500^{\circ}C$가 넘지않는 저온공정을 실현하였고, silicon-on-insulator (SOI) 기판이 아닌 solid phase crystallization (SPC) 결정화 방법을 이용하여 결정화 시킨 SPC-TFT 기판을 사용하였다. Silicide 의 형성은 pt를 증착하여 furnace에서 열처리를 실시하여 형성하였다.

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Co-Silicide Device Characteristics in Embedded DRAM

  • Kim, Jong-Chae;Kim, Yeong-Cheol;Kim, Byung-Kook
    • Korean Journal of Crystallography
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    • v.12 no.3
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    • pp.162-165
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    • 2001
  • The EDL (Embedded DRAM and Logic) technologies with stack cell capacitors based on NO dielectric and Co-silicided source/drain junctions using a Ti capping material, were successfully implemented. The employed Co-silicided film exhibited junction leakage characteristics comparable to those of non-silicided junctions. Improved device characteristics without degradation of I/sub off/ was also achieved.

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FinFET for Terabit Era

  • Choi, Yang-Kyu
    • JSTS:Journal of Semiconductor Technology and Science
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    • v.4 no.1
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    • pp.1-11
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    • 2004
  • A FinFET, a novel double-gate device structure is capable of scaling well into the nanoelectronics regime. High-performance CMOS FinFETs , fully depleted silicon-on-insulator (FDSOI) devices have been demonstrated down to 15 nm gate length and are relatively simple to fabricate, which can be scaled to gate length below 10 nm. In this paper, some of the key elements of these technologies are described including sub-lithographic pattering technology, raised source/drain for low series resistance, gate work-function engineering for threshold voltage adjustment as well as metal gate technology, channel roughness on carrier mobility, crystal orientation effect, reliability issues, process variation effects, and device scaling limit.

A Five Mask CMOS LTPS Process With LDD and Only One Ion Implantation Step

  • Schalberger, Patrick;Persidis, Efstathios;Fruehauf, Norbert
    • Journal of Information Display
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    • v.8 no.1
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    • pp.1-5
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    • 2007
  • We have developed a CMOS LTPS process which requires only five photolithographic masks and only one ion doping step. Drain/Source areas of NMOS TFTs were formed by PECVD deposition of a highly doped precursor layer while PMOS contact areas were defined by ion implantation. Single TFTs, inverters, ring oscillators and shift registers were fabricated. N and p-channel devices reached field effect mobilities of $173cm^2$/Vs and $47cm^2$/Vs, respectively.

Analytical Modeling for Circuit Simulation of Amorphous Silicon Thin Film Transistors (비정질 실리콘 박막 트랜지스터의 회로 분석을 위한 해석적 모델링)

  • 최홍석;박진석;오창호;한철희;최연익;한민구
    • The Transactions of the Korean Institute of Electrical Engineers
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    • v.40 no.5
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    • pp.531-539
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    • 1991
  • We develop an analytical model of the static and the dynamic characteristics of amorphous silicon thin film transistors (a-Si TFTs) in order to incorporate into a widely used circuit simulator such as SPICE. The critical parameters considered in our analytical model of a-Si TFT are the power factor (XN) of saturation source-drain current and the effective channel length (L') at saturation region. The power factor, XN must not always obey so-called

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