• Title/Summary/Keyword: 나노복합체

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Improvement of Organic-Inorganic Hybrid Solar Cells' Property using ZnO based nanostructure surface treatment (ZnO 나노구조물 표면 처리를 통한 유무기 복합체 태양전지의 특성 향상)

  • Jin, Mi-Jin;Lee, Jyung-Hwan;Ban, Tae-Ho;Kim, Sang-Woo;Jeong, Soon-Wook;Kim, Sung-Jin
    • 한국신재생에너지학회:학술대회논문집
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    • 2009.11a
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    • pp.393-393
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    • 2009
  • 유기물 기반 태양전지의 낮은 전하수송 효율 문제(전하이동거리 약 ~20nm)를 개선하기 위해서는 생성된 전자-홀 쌍이 빠르게 전극 층으로 이동하도록 태양전지 의 층 구조 및 특성을 제어하는 것이 중요하다. 그 방안으로 무기물 반도체인 산화아연을 나노구조물 형태로 제어하여 전자 이동층(Electron Conductive Layer) 으로 도입, 생성된 전자의 이동 가능한 면적을 넓히고 전자수송효율을 높여 유무기 복합체 태양전지의 Fill Factor를 향상시켰다. 또한 제조된 산화아연 나노구조물의 산소플라즈마 처리와 같은 표면 처리를 통하여 유기물 층과의 흡착성을 높이고 나노구조물 표면에 oxygen을 침투시켜 전자 이동도를 향상시켰다.

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Electrospun Metal Oxide/Carbon Nanofiber Composite Electrode for Supercapacitor Application (전기방사를 이용한 슈퍼캐퍼시터용 금속산화물/탄소나노섬유 복합체)

  • Yang, Kap Seung;Kim, Bo Hye
    • Applied Chemistry for Engineering
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    • v.26 no.3
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    • pp.239-246
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    • 2015
  • The hybridization of carbon nano-materials enhances the efficiency of each function of the resulting structure or composites. Also, the addition of non-carbon elements to nanomaterials modifies the electrochemical properties. Electrodes combining porous carbon nanofibers (CNFs) and metal oxides benefit from the combination of the double-layer capacitance of the CNFs and the pseudocapacitive character associated with the surface redox-type reactions. Consequently, they demonstrate superior supercapacitor performance in terms of high capacitance, high energy/power efficiency and high rate capability. This paper presents a comprehensive review of the latest advances made in the development and application of various metal oxide/CNF composites (CNFCs) to supercapacitor electrodes.

Study of Antimicrobial Properties for Silver/Celite Composites (은/셀라이트 복합체의 항균특성에 관한 연구)

  • Lee, Chul-Jae;Kim, Byung-So
    • Applied Chemistry for Engineering
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    • v.20 no.6
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    • pp.696-699
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    • 2009
  • In present work, the antimicrobial effect of silver-nanoparticles/celite (SN/C) and silver carbonate/celite (SC/C) composites on Escherichia coli (E. coli) by use of silver nanoparticles and silver carbonate has been studied. Characteristics of the SN/C and SC/C composites were identified by scanning electron microscopy (SEM), X-ray diffraction (XRD) and atomic absorption spectroscopy (AAS). SN/C and SC/C composites showed antimicrobial activity and the minimum inhibitory concentration of E. coli were 0.541, 0.344 ppm and the complete sterilizing concentration for the test organism were 1.427, 1.623 ppm. From the results we identified that SN/C and SC/C composites have antimicrobial activity to E. coli.