Molecular Fingerprints in the Electronic Properties of Crystalline Organic Semiconductors: From Experiment to Theory

被引:58
作者
Ciuchi, S. [1 ,2 ]
Hatch, R. C. [3 ]
Hoechst, H. [4 ]
Faber, C. [5 ,6 ]
Blase, X. [5 ,6 ]
Fratini, S. [5 ,6 ]
机构
[1] Univ Aquila, Ist Sistemi Complessi CNR, CNISM, I-67100 Coppito, Italy
[2] Univ Aquila, Dipartimento Fis, I-67100 Coppito, Italy
[3] Aarhus Univ, Dept Phys & Astron, DK-8000 Aarhus C, Denmark
[4] Univ Wisconsin Madison, Ctr Synchrotron Radiat, Stoughton, WI 53589 USA
[5] Inst Neel CNRS, F-38042 Grenoble 9, France
[6] Univ Grenoble 1, F-38042 Grenoble 9, France
基金
美国国家科学基金会;
关键词
MEAN-FIELD THEORY; SMALL POLARON; TRANSPORT; TRANSISTORS;
D O I
10.1103/PhysRevLett.108.256401
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
By comparing photoemission spectroscopy with a nonperturbative dynamical mean field theory extension to many-body ab initio calculations, we show in the prominent case of pentacene crystals that an excellent agreement with experiment for the bandwidth, dispersion, and lifetime of the hole carrier bands can be achieved in organic semiconductors, provided that one properly accounts for the coupling to molecular vibrational modes and the presence of disorder. Our findings rationalize the growing experimental evidence that even the best band structure theories based on a many-body treatment of electronic interactions cannot reproduce the experimental photoemission data in this important class of materials.
引用
收藏
页数:5
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