• 제목/요약/키워드: electronic materials

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Progress In Commercialization Of Light Emitting Polymers: Dow Polyfluorenes

  • Wu, W.;Inbasekaran, M.;Hudack, M.;Welsh, D.;Yu, W.;Chen, Y.;Wang, C.;Kram, S.;Tacey, M.;Bernius, M.;Fletcher, R.;Kiszka, K.;Munger, S.;O'Brien, J.;Hills, M.
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2002년도 International Meeting on Information Display
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    • pp.340-343
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    • 2002

  • We report here our recent progress in the development and commercialization of polyfluorenes emitting red, green and blue (ROB) colors as materials for light emitting diodes (LEDs). Our patented version of the Suzuki coupling process has been used to synthesize a variety of fluorenebased homopolymers and copolymers emitting colors across the entire visible spectrum. The optical and electronic properties of the polymers are tailored through selective incorporation of different aromatic units into the polyfluorene backbone. Our latest green emitter, reported herein, provides very efficient devices with a low turn-on voltage of 2.25 V, a peak efficiency of 10.5 Cd/A at 6,600 Cd/$m^2$ at 4.85 V. These devices maintain an efficiency of greater than 10 Cd/A up to 50,000 Cd/$m^2$ and demonstrate very good stability as exemplified by a device half-life of greater than 1,500 hours starting from 1,100 Cd/$m^2$. Considerable progress has also been made with red and blue emitters and will be the subject of this presentation.

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ANALYSIS OF SrTiO$_3$STEP-FLOW GROWTH BY RHEED

  • Shin, Dong-Suk;Lee, Ho-Nyung;Kim,Yong-Tae;Chol, In-Hoon;Kim, Chang-Jung;Kim, T.Y.;Lee, J.K.;Chung, Il-Sub
    • 한국재료학회:학술대회논문집
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    • 한국재료학회 1998년도 IUMRS-ICEM ABSTRACT BOOK
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    • pp.65.2-65
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    • 1998

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Quantum Dot Optoelectronic Devices

  • P., Lever;K., Stewart;Q., Gao;L., Fu;J., Wong-Leung;M., Buda;H.H., Tan;C., Jagadish
    • 한국광학회:학술대회논문집
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    • 한국광학회 2004년도 하계학술발표회
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    • pp.4-5
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    • 2004

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