Ultrafast charge-transfer processes at an oriented phthalocyanine/C60 interface

被引：33
|
作者：
Dutton, G. J. [1 ]
Jin, W. [2 ]
Reutt-Robey, J. E. [2 ]
Robey, S. W. [1 ]
机构：
[1] NIST, Gaithersburg, MD 20899 USA
[2] Univ Maryland, Dept Chem & Biochem, College Pk, MD 20742 USA
来源：
PHYSICAL REVIEW B | 2010年 / 82卷 / 07期
基金：
美国国家科学基金会;
关键词：
PHOTOINDUCED ELECTRON-TRANSFER; SPECTRA;
D O I：
10.1103/PhysRevB.82.073407
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The ultrafast dynamics at a well-characterized CuPc/C-60 organic photovoltaic heterojunction have been directly measured with time-resolved two-photon photoemission (TR-2PPE). Phthalocyanine/C-60 donor-acceptor interfaces, characterized in detail via scanning tunneling microscopy, provide model systems for studies of critical charge separation and recombination processes that determine device performance. TR-2PPE studies of copper phthalocyanine (CuPc)/C-60 interfaces reveal ultrafast charge separation and provide evidence for recombination via low-lying CuPc triplet levels.
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页数：4
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