Exciton band structure of pentacene molecular solids: Breakdown of the frenkel exciton model

被引：108

作者：

Schuster, R.

Knupfer, M.

Berger, H.

机构：

[1] IFW Dresden, D-01171 Dresden, Germany

[2] Tech Univ Chemnitz, Inst Phys, D-09107 Chemnitz, Germany

[3] Ecole Polytech Fed Lausanne, Inst Phys Complex Matter, CH-1015 Lausanne, Switzerland

来源：

PHYSICAL REVIEW LETTERS | 2007年 / 98卷 / 03期

关键词：

D O I：

10.1103/PhysRevLett.98.037402

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Employing inelastic electron scattering we demonstrate here the determination of the exciton dispersion in a molecular solid. The failure of the applied tight-binding description provides strong evidence for a necessary reconsideration of the traditional, Frenkel-exciton based, understanding of the lowest-lying electronic transitions in organic semiconductors.

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页数：4

相关论文

共 19 条

[1] Polarization at the gold/pentacene interface [J].

Amy, F ;

Chan, C ;

Kahn, A .

ORGANIC ELECTRONICS, 2005, 6 (02) :85-91

[2] Electronic structure of organic films in the first excited states determined using scanning tunneling spectroscopy: An experimental and theoretical study [J].

Arima, V ;

Della Sala, F ;

Matino, F ;

Blyth, RIR ;

Barbarella, G ;

Melucci, M ;

Cingolani, R ;

Rinaldi, R .

PHYSICAL REVIEW B, 2005, 72 (08)

[3]

Davydov A.S., 1971, THEORY MOL EXCITONS

[4] Organic single-crystal field-effect transistors [J].

de Boer, RWI ;

Gershenson, ME ;

Morpurgo, AF ;

Podzorov, V .

PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE, 2004, 201 (06) :1302-1331

[5]

FINK J, 1989, ADV ELECTRON EL PHYS, V75, P121

[6] On the transformation of light into heat in solids. II [J].

Frenkel, J .

PHYSICAL REVIEW, 1931, 37 (10) :1276-1294

[7] Analysis of the anisotropy of excitons in pentacene single crystals using reflectivity measurements and electron energy-loss spectroscopy [J].

Grobosch, M. ;

Schuster, R. ;

Pichler, T. ;

Knupfer, M. ;

Berger, H. .

PHYSICAL REVIEW B, 2006, 74 (15)

[8] Organic thin film transistors: From theory to real devices [J].

Horowitz, G .

JOURNAL OF MATERIALS RESEARCH, 2004, 19 (07) :1946-1962

[9] Oligoacene exciton binding energies: Their dependence on molecular size [J].

Hummer, K ;

Ambrosch-Draxl, C .

PHYSICAL REVIEW B, 2005, 71 (08)

[10]

Karl N., 2001, Organic electronic materials: conjugated polymers and low molecular weight organic solids, Eds