Role of confinement and aggregation in charge transport in semicrystalline polythiophene thin films

被引：98

作者：

Duong, Duc T. ^{[1
]}

Toney, Michael F. ^{[2
]}

Salleo, Alberto ^{[1
]}

机构：

[1] Stanford Univ, Dept Mat Sci & Engn, Stanford, CA 94305 USA

[2] SLAC Natl Accelerator Lab, Stanford Synchrotron Radiat Lightsource, Menlo Pk, CA 94025 USA

来源：

PHYSICAL REVIEW B | 2012年 / 86卷 / 20期

基金：

美国国家科学基金会;

关键词：

FIELD-EFFECT TRANSISTORS; MOLECULAR-WEIGHT; SOLAR-CELLS; ABSORPTION-SPECTROSCOPY; CRYSTALLINE-STRUCTURE; EFFECT MOBILITY; HOLE MOBILITY; POLY(3-HEXYLTHIOPHENE); MICROSTRUCTURE; PERFORMANCE;

D O I：

10.1103/PhysRevB.86.205205

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Crystallite orientations, molecular packing disorder, and hole mobility of poly(3-hexylthiophene) thin films that are spin casted from different solvents are studied as a function of film thickness. Grazing incidence x-ray diffraction reveals that films consist of an ultrathin layer of ordered, edge-on oriented aggregates and a more disordered, face-on oriented bulk region. Diffraction and optical absorption spectroscopy elucidate the film-forming process. Field-effect hole mobility provides evidence for interconnecting aggregates as the mechanism for efficient charge transport.

引用

页数：5

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