화학공학소재연구정보센터
학회 한국고분자학회
학술대회 2003년 봄 (04/11 ~ 04/12, 연세대학교)
권호 28권 1호, p.6
발표분야 특별 심포지엄
제목 Semiconductor Quantum Dots―Polymer Composites for White Light Emitting Devices
초록 The synthesis of a (CdSe)ZnS quantum dot-polymethylmethacrylate polymer composite and the fabrication of QD-polymer composite films are described. CdSe and (CdSe)ZnS quantum dots were produced by direct colloidal chemical synthesis and the surface-passivation method that involved an overcoating of the dots with a wider- bandgap material. PMMA is transparent in the visible spectral range and was chosen as an embedding matrix for the QDs. A 28%(w/w) of PMMA in MMA was the most appropriate concentration for producing a film of good quality and to maximize the solubility of quantum dots without phase separation of the QDs from the matrix. Green or red light emitting (CdSe)ZnS QDs-PMMA polymer composite films were prepared by combining the green or red light emitting (CdSe)ZnS dots with PMMA of high optical transparency in the visible region and spin-coating the composite solution. A white light emitting device can be fabricated by combining the green/red light emitting QD-polymer composites with the blue light emitting LED as an excitation source. The QD-polymer composites described here can be also used in flexible full color display applications.
저자 이성훈
소속 서울대
키워드 발광고분자; 전도성고분자; 반도체 양자점; 디스플레이
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