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.

引用

页数：4

共 27 条

[1] Tracing photoinduced electron transfer process in conjugated polymer/fullerene bulk heterojunctions in real time
Brabec, CJ
Zerza, G
Cerullo, G
De Silvestri, S
Luzzati, S
Hummelen, JC
Sariciftci, S
[J]. CHEMICAL PHYSICS LETTERS, 2001, 340 (3-4) : 232 - 236
[2] Distance-dependent electronic coupling at molecule-metal interfaces:: C60/Cu(111)
Dutton, G
Zhu, XY
[J]. JOURNAL OF PHYSICAL CHEMISTRY B, 2004, 108 (23) : 7788 - 7793
[3] Relative Photon-to-Carrier Efficiencies of Alternating Nanolayers of Zinc Phthalocyanine and C60 Films Assessed by Time-Resolved Terahertz Spectroscopy
Esenturk, Okan
Melinger, Joseph S.
Lane, Paul A.
Heilweil, Edwin J.
[J]. JOURNAL OF PHYSICAL CHEMISTRY C, 2009, 113 (43) : 18842 - 18850
[4] Enhanced triplet exciton generation in polyfluorene blends
Ford, TA
Avilov, I
Beljonne, D
Greenham, NC
[J]. PHYSICAL REVIEW B, 2005, 71 (12)
[5] SINGLET-EXCITON FUSION IN MOLECULAR-SOLIDS - A DIRECT SUBPICOSECOND DETERMINATION OF TIME-DEPENDENT ANNIHILATION RATES
GREENE, BI
MILLARD, RR
[J]. PHYSICAL REVIEW LETTERS, 1985, 55 (12) : 1331 - 1334
[6] Excitonic solar cells
Gregg, BA
[J]. JOURNAL OF PHYSICAL CHEMISTRY B, 2003, 107 (20) : 4688 - 4698
[7] Ultrafast interfacial electron transfer from the excited state of anchored molecules into a semiconductor
Gundlach, L.
Ernstorfer, R.
Willig, F.
[J]. PROGRESS IN SURFACE SCIENCE, 2007, 82 (4-6) : 355 - 377
[8] Strongly reduced band gap in a correlated insulator in close proximity to a metal
Hesper, R
Tjeng, LH
Sawatzky, GA
[J]. EUROPHYSICS LETTERS, 1997, 40 (02): : 177 - 182
[9] Molecular orientation of CuPc thin films on C60/Ag(111)
Huang, Han
Chen, Wei
Chen, Shi
Qi, Dong Chen
Gao, Xing Yu
Wee, Andrew Thye Shen
[J]. APPLIED PHYSICS LETTERS, 2009, 94 (16)
[10] Photoinduced carrier generation in P3HT/PCBM bulk heterojunction materials
Hwang, In-Wook
Moses, Daniel
Heeger, Alan J.
[J]. JOURNAL OF PHYSICAL CHEMISTRY C, 2008, 112 (11) : 4350 - 4354

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