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    National Tsing Hua University Institutional Repository > 理學院 > 化學系 > 期刊論文 >  Phosphorescence of red Os(fptz)(2)(PPh2Me)(2) doped organic light-emitting devices with n and p hosts


    Please use this identifier to cite or link to this item: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/56596


    Title: Phosphorescence of red Os(fptz)(2)(PPh2Me)(2) doped organic light-emitting devices with n and p hosts
    Authors: Liu TH;Hsu SF;Ho MH;Liao CH;Wu YS;Chen CH;Tung YL;Wu PC;Chi Y
    教師: 季昀
    Date: 2006
    Publisher: American Institute of Physics
    Relation: APPLIED PHYSICS LETTERS, American Institute of Physics, Volume 88, Issue 6, FEB 6 2006
    Keywords: ENERGY-TRANSFER
    ELECTROPHOSPHORESCENCE
    EFFICIENCY
    EMISSION
    Abstract: We have applied a stericly-hindered red phosphorescent dopant Os(fptz)(2)(PPh2Me)(2) [fptz=3-trifluoromethyl-5-(2-pyridyl)-1,2,4-triazole, PPh2Me=phosphine ligand] in p-type 4,4(')-N,N-'-dicarbazole-biphenyl or n-type bis(2-methyl-8-quinolinolato)(p-phenylphenolato) aluminum host and found that the latter produced higher luminance efficiency at lower doping concentration. We present a model to rationalize this phenomenon in which the n-type host impedes hole transport, which leads to narrower recombination zone near the hole transport layer/emission layer interface than the p-type host, hence, more effective recombination.
    URI: http://www.aip.org/
    http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/56596
    Appears in Collections:[化學系] 期刊論文

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