National Tsing Hua University Institutional Repository:Large enhancement of inter-system crossing rate in polyfluorene by iridium-complex doping
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    National Tsing Hua University Institutional Repository > 電機資訊學院 > 電機工程學系 > 期刊論文 >  Large enhancement of inter-system crossing rate in polyfluorene by iridium-complex doping


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    題名: Large enhancement of inter-system crossing rate in polyfluorene by iridium-complex doping
    作者: Hua-Hsien Liao;Chia-Ming Yang;Chi-Hua Wu;Sheng-Fu Horng;Wei-Shan Lee;Hsin-Fei Meng;Jow-Tsong Shy;Chain-Shu Hsu
    教師: 洪勝富
    日期: 2007
    出版者: American Institute of Physics
    關聯: APPLIED PHYSICS LETTERS, American Institute of Physics, Volume 90, Issue 1, JAN 1 2007, Pages 013504
    關鍵詞: iridium compounds
    organometallic compounds
    polymers
    doping
    triplet state
    excitons
    spin-orbit interactions
    摘要: Photoinduced absorption is used to study the intersystem crossing (ISC) rate of two polyfluorenes doped with iridium (III) tris[2-(4-totyl)pyridinato-N,C2]. It is found that the triplet exciton lifetime of polyfluorene is reduced by the dopants. But instead of decreasing, the population density of polyfluorene triplet exciton increases by almost one order of magnitude. The finding shows that the ISC rate can increase over 100 times due to the spin-orbital interaction with the Ir ion even though it is covered by the ligands. Specifically, the ISC lifetime changes from the intrinsic value of 62 ns to as short as 0.28 ns upon 10% doping.
    相關連結: http://www.aip.org/
    URI: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/71633
    顯示於類別:[電機工程學系] 期刊論文

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