Singlet exciton transfer and fullerene triplet formation in polymer-fullerene blend films

被引：68
作者：
Cook, Steffan
Ohkita, Hideo
Durrant, James R. [1 ]
Kim, Youngkyoo
Benson-Smith, Jessica J.
Nelson, Jenny
Bradley, Donal D. C.
机构：
[1] Univ London Imperial Coll Sci Technol & Med, Dept Chem, London SW7 2AZ, England
[2] Univ London Imperial Coll Sci Technol & Med, Dept Phys, London SW7 2BW, England
来源：
APPLIED PHYSICS LETTERS | 2006年 / 89卷 / 10期
基金：
英国工程与自然科学研究理事会; 日本学术振兴会;
关键词：
D O I：
10.1063/1.2338528
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Photoluminescence and transient absorption measurements of poly(9,9-dioctylfluorene-alt-benzothiadiazole) (F8BT) and 1-(3-methoxycarbonyl)propyl-1-phenyl-(6,6)C-61 (PCBM) blend films reveal that optical excitation of F8BT results in formation of the singlet and triplet excited states of PCBM. These observations are assigned to rapid (> 10(11) s(-1)) singlet energy transfer from F8BT to PCBM, followed by intersystem crossing to the PCBM triplet state. (c) 2006 American Institute of Physics.
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页数：3
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