• 제목/요약/키워드: Chemical characterization

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Synthesis and Characterization of Nanostructured Titania Films for Dye-Sensitized Solar Cells

  • Hwang, Kyung-Jun;Yoo, Seung-Joon;Jung, Sung-Hoon;Park, Dong-Won;Kim, Sun-Il;Lee, Jae-Wook
    • Bulletin of the Korean Chemical Society
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    • 제30권1호
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    • pp.172-176
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    • 2009

  • The nature and morphology of titanium dioxide films play a significant role in determining the overall efficiency of dye-sensitized solar cell (DSSCs). In this work, the preparation of nanostructured titania particles by sol-gel method (SG-$TiO_2$) and its characterization were investigated for the application of DSSCs. The samples were characterized by XRD, XPS, FE-SEM, BET and FT-IR analysis. The energy conversion efficiency of SG-$TiO_2$ was approximately 8.3 % under illumination with AM 1.5 (100 mW/$cm^2$) simulated sunlight. DSSCs made of SG-$TiO_2$ nanocrystalline films as photoanodes achieved better energy conversion efficiency compared to those prepared using commercially available Degussa P25.

  • https://doi.org/10.5012/bkcs.2009.30.1.172 인용 PDF KSCI

Poly(p-phenylenevinylene) (PPV) LB 막의 제작 및 특성 연구 (Study on preparation and characterization of PPV LB films.)

  • 김재환;김경수;강우형;손미화;김영찬;김영관;손병청
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 1994년도 추계학술대회 논문집 학회본부
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    • pp.219-221
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    • 1994

  • Oil-soluble poly(p-phenylene(1-methoxyethylene)), as a precursor of poly(p-phenylenevinylene) (PPV), was synthesized add identified with NMR and FT-IR spectroscopy. The PPV films were prepared by PPV precursor films with a thermal treatment at $250^{\circ}C$ under vacuum, where the PPV precursor films wets formed on various substrates by using Langmuir-Blodgett(LB) method. The characterization of these films was carried out by FT-IR spectroscopy, UV-VIS absorption spectroscopym, and photoluminescence (PL). Atomic Force Microscopy (AFM) has been used to investigate He surface morphology of PPV films.

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