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Energy-transferred photoluminescence from thiophene/phenylene oligomer thin films |
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| Authors: | T Shimada H Yanagi |
| Institution: | a Graduate School of Science and Technology, Kobe University, Rokkodai, Nada-ku, Kobe 657-8501, Japan b Graduate School of Science and Technology, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan c Graduate School of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama-cho, Ikoma, Nara 630-0192, Japan |
| Abstract: | Photoluminescence (PL) based on Förster energy transfer between p-sexiphenyl (p-6P) and 5,5′-bis(4-phenylyl)-2,2′-bithiophene (BP2T) was investigated for their coevaporated and laminated thin films. In the former films, fluorescence quenching of the p-6P was accompanied by appearance of BP2T fluorescence, which indicated existence of the energy transfer between the donors and the acceptors. The latter films were fabricated by successive depositions of p-6P, MgF2 and BP2T in which the thickness of the MgF2 spacer was varied. The energy-transferred acceptor fluorescence was suppressed by the spacer thicker than the Förster distance (∼10 nm). |
| Keywords: | 78 66 Qn 78 55 &minus m |
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