Singlet energy transfer and singlet-singlet annihilation in light-emitting blends of organic semiconductors

A. Ruseckas, J. C. Ribierre, P. E. Shaw, S. V. Staton, P. L. Burn, I. D.W. Samuel

研究成果: ジャーナルへの寄稿学術誌査読

19 被引用数 (Scopus)

抄録

Excitation energy transfer from host to guest is studied in spin-cast blends of 4, 4′ -bis(N -carbazolyl)biphenyl (CBP) and a phosphorescent fac -tris(2-phenylpyridyl)iridium(III)-cored dendrimer using time resolved fluorescence. The kinetics of energy transfer are consistent with homogeneous dispersion of the dendrimers in the CBP host. Diffusion-controlled singlet-singlet exciton annihilation is observed in the CBP host at moderate excitation densities, similar to those encountered in high brightness light-emitting devices and organic lasers. The results are important for organic lighting and the understanding of exciton diffusion in guest-host systems for electrophosphorescence.

本文言語英語
論文番号183305
ジャーナルApplied Physics Letters
95
18
DOI
出版ステータス出版済み - 2009

!!!All Science Journal Classification (ASJC) codes

  • 物理学および天文学(その他)

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