• 제목/요약/키워드: Nano Science

검색결과 4,151건 처리시간 0.035초

Memory characteristics of MOSFET with silicon nanocluster double layers

  • Kim, Eun-Kyeom;Kim, Kyoung-Min;Son, Dae-Ho;Kim, Jeong-Ho;Ko, Chang-Hoon;Koo, Hyun-Mo;Cho, Won-Ju;Han, Moon-Sup;Won, Sung-Hwan;Hong, Wan-Shick;Sok, Jung-Hyun;Park, Kyoung-Wan
    • 한국진공학회:학술대회논문집
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    • 한국진공학회 2007년도 제33회 하계학술대회 초록집
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    • pp.310-310
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    • 2007
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Nonvolatile memory with phosphorous doped Si NCs

  • Kim, Jeong-Ho;Kim, Kyong-Min;Kim, Eun-Kyeom;Son, Dae-Ho;Lee, Kyung-Su;Won, Sung-Hwan;Han, Moon-Sup;Hong, Wan-Shick;Sok, Jung-Hyun;Park, Kyoung-Wan
    • 한국진공학회:학술대회논문집
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    • 한국진공학회 2008년도 제34회 동계학술대회 초록집
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    • pp.316-316
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    • 2008
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Electric and Magnetic Properties of Precipitated GaMnAs

  • Yu, Fucheng;Gao, Cunxu;P.V., Chandra sekar;Kim, Do-Jin;Kim, Hyo-Jin;Ihm, Young-Eon;Kim, Chang-Soo
    • 한국자기학회:학술대회 개요집
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    • 한국자기학회 2007년도 The 1st International Symposium on Advanced Magnetic Materials
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    • pp.46.2-46.2
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    • 2007
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ITO/CNT 나노 복합체의 염료감응형 태양전지의 이용 (ITO/CNT Nano Composites as a Counter Electrode for the Dye-Sensitized Solar Cell Applications)

  • 박종현;;정현준;조태연;윤순길
    • 한국전기전자재료학회논문지
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    • 제24권1호
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    • pp.76-80
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    • 2011
  • The ITO/Cabon Nano Tube (CNT) nano composites were deposited by nano cluster deposition (ITO) and arc discharge deposition (CNT) on glass substrates. The structural, optical and photovoltaic performance of ITO/CNT nano composites as a counter electrode of dye-sensitized solar-cells (DSSCs) such films were investigated. At low temperature below $250^{\circ}C$, the ITO films deposited on CNT. The ITO/CNT nano composit showed a good optical and electrical property for the counter electrode of DSSCs. When the as-prepared ITO/CNT nano composites are used for the counter electrodes, the photovoltaic parameters are $V_{OC}$ = 0.69 V, $J_{SC}$ = 5.69 mA/$cm^2$, FF = 0.32, and $\eta$ = 0.53 %. The ITO/CNT nano composites showed the possibility for the counter electrode applications of DSSCs.

Tailoring Porosity of Colloidal Boehmite Sol by Controlling Crystallite Size

  • Park, Myung-Chul;Lee, Sung-Reol;Kim, Hark;Park, In;Choy, Jin-Ho
    • Bulletin of the Korean Chemical Society
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    • 제33권6호
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    • pp.1962-1966
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    • 2012
  • Boehmite sols have been prepared by crystallization of amorphous aluminum hydroxide gel obtained by hydrolysis and peptization of aluminum using acetic acid. The size of the boehmite crystallites could be controlled by Al molar concentration in amorphous gel by means of controlling grain growth at nucleation stage. The size of boehmite increases as a function of Al molar concentration. With increasing boehmite crystallite size, the $d_{(020)}$ spacing and the specific surface area decreases, whereas the pore volume increases along with pore size. Especially, the pore size of the boehmite sol particles is comparable to the crystallite size along the b axis, suggesting that the fibril thickness along the b axis among the crystallite dimensions of the boehmite contributes to the pore size. Therefore, the physical properties of boehmite sols can be determined by the crystallite size controlled as a function of initial Al concentration.