Photoinduced transient stark spectroscopy in organic semiconductors: A method for charge mobility determination in the picosecond regime

被引:70
作者
Cabanillas-Gonzalez, J [1 ]
Virgili, T
Gambetta, A
Lanzani, G
Anthopoulos, TD
de Leeuw, DM
机构
[1] Politecn Milan, IFN, CNR, Dipartimento Fis,ULTRAS,INFM, I-20133 Milan, Italy
[2] Univ London Imperial Coll Sci & Technol, Dept Phys, Blackett Lab, London SW7 2BW, England
[3] Philips Res Labs, NL-5656 AA Eindhoven, Netherlands
关键词
D O I
10.1103/PhysRevLett.96.106601
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Subpicosecond photoinduced Stark spectroscopy experiments are carried out for measuring charge carrier mobility in organic semiconductors. The technique is demonstrated in state-of-art devices based on methanofullerene. The transient mobility of photogenerated charge carriers is measured in the picosecond time domain. Electric field dependent mobility is observed from the earliest time scales. In addition, two distinct transport regimes are revealed: a short-lived state, approximately 10 ps, of high mobility and a transient towards the trap limited transport, associated with the mesoscopic structure of the medium.
引用
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页码:1 / 4
页数:4
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