• 제목/요약/키워드: GeTe

검색결과 238건 처리시간 0.037초

PRAM용 상변화 소재인 AgInSbTe의 전기적 특성에 대한 연구

  • 홍성훈;배병주;황재연;이헌
    • 한국재료학회:학술대회논문집
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    • 한국재료학회 2009년도 춘계학술발표대회
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    • pp.19.1-19.1
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    • 2009
  • Phase change random access memory (PRAM)은 large sensing signal margin, fast programming speed, low operation voltage, high speed operation, good data retention, high scalability등을 가지는 가장 유망한 차세대 비휘발성 메모리이다. 현재 PRAM용 상변화 재료로는 주로 Ge2Sb2Te5가 사용되고 있지만 reset 전류가 높고 reliability 가 좋지 않아서 새로운 상변화 물질 연구가 필요하다. AgInSbTe (AIST)는 GST와 더불어 열에 의한 가역적 상변화를 하는 소재로 광기록 매체에서는 기록 속도가 빠르고 동작 특성이 우수하다는 특징이 있다. 본 연구에서는 XRD, 비저항측정등을 통해 온도에 따른 AIST의 물성 및 결정화 특성을 분석하고 나노 소자제작을 통해 그 전기적 특성을 평가하였다.

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칼코게나이드 박막에서의 conductivity 변화에 관한 연구 (The study of conductivity transition on chalcogenide thin films)

  • 양성준;신경;박정일;정홍배
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 2003년도 추계학술대회 논문집 Vol.16
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    • pp.112-115
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    • 2003
  • There is a growing need for a nonvolatile memory technology with faster speed than existing nonvolatile memories. $T_c$(crystallization temperature) is confirmed by measuring the conductivity with the varying temperature. The sample is heated on the hotplate and slow down to the room-temperature. We prepared Te based alloy bulk. The materials can be used for nonvolatile random access memory.

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GaAs를 이용한 MIS형 다이오드의 제작 및 전기적 특성 (Fabrication of MIS Type GaAs Diode and Its Electrical Characteristics)

  • 鄭期太;鄭鎬宣
    • 대한전자공학회논문지
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    • 제23권1호
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    • pp.50-57
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    • 1986
  • The fabricatoin sequence of GaAs MIS type diode and its electrical characteristics are presented. Used wafers were undoped GaAS wafer adn Te-doped GaAs wafer. Au and AuGe/Ni was used as schottky contact metal and ohmic contact metal respectively. Oxide layer on GaAs surface was formed by water vapor saturated oxide growth technique and dry oxidation technique. In Te-doped GaAs wafer, cutin voltage of MIS type diode was enhanced about 3V comparing with non-oxide layer diode. From light I-V characteristics fill factor of MIS type Te-doped GaAs diode was about 64%, Voc(open circuit voltage) was 0.67V.

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NEXAFS study on $Ge_2Sb_2Te_5$ films

  • 장문형;박승종;임동혁;이연진;조만호;황정남
    • 한국진공학회:학술대회논문집
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    • 한국진공학회 2008년도 제34회 동계학술대회 초록집
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    • pp.338-338
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    • 2008
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PRAM 기록막용 Sb2Te3 박막의 질소 첨가에 대한 영향 (The Effect of N2 Gas Doping on Sb2Te3Thin Film for PRAM Recording Layer)

  • 배준현;차준호;김경호;김병근;이홍림
    • 한국세라믹학회지
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    • 제45권5호
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    • pp.276-279
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    • 2008
  • In this research, properties of $N_2$-doped $Sb_2Te_3$ thin film were evaluated using 4-point probe, XRD and AFM. $Sb_2Te_3$ material has faster crystallization rate than $Ge_2Sb_2Te_5$, but sheet resistance difference between amorphous and crystallization state is very low. This low sheet resistance difference decreases sensing margin in reading operation at PRAM device operation. Therefore, in order to overcome this weak point, $N_2$ gas was doped on $Sb_2Te_3$ thin film. Sheet resistance difference between amorphous and crystallized state of $N_2$-doped $Sb_2Te_3$ thin film showed about $10^4$ times higher than Un-doped $Sb_2Te_3$ thin film because of the grain boundary scattering.