Band Dispersion and Electronic Lifetimes in Crystalline Organic Semiconductors

被引：50

作者：

Ciuchi, S. ^{[1
,2
]}

Fratini, S. ^{[3
,4
]}

机构：

[1] CNISM, Ist Sistemi Complessi CNR, I-67100 Coppito, Italy

[2] Univ Aquila, Dipartimento Fis, I-67100 Coppito, Italy

[3] Inst Neel CNRS, F-38042 Grenoble 9, France

[4] Univ Grenoble 1, F-38042 Grenoble 9, France

来源：

PHYSICAL REVIEW LETTERS | 2011年 / 106卷 / 16期

关键词：

TRANSPORT; POLARON;

D O I：

10.1103/PhysRevLett.106.166403

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The consequences of several microscopic interactions on the photoemission spectra of crystalline organic semiconductors are studied theoretically. It is argued that their relative roles can be disentangled by analyzing both their temperature and their momentum-energy dependence. Our analysis shows that the polaronic thermal band narrowing, which is the foundation of most theories of electrical transport in organic semiconductors, is inconsistent in the range of microscopic parameters appropriate for these materials. An alternative scenario is proposed to explain the experimental trends.

引用

页数：4

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