Effect of Miscibility and Percolation on Electron Transport in Amorphous Poly(3-Hexylthiophene)/Phenyl-C61-Butyric Acid Methyl Ester Blends

被引：103

作者：

Vakhshouri, Kiarash ^{[1
]}

Kozub, Derek R. ^{[1
]}

Wang, Chenchen ^{[2
]}

Salleo, Alberto ^{[2
]}

Gomez, Enrique D. ^{[1
,3
]}

机构：

[1] Penn State Univ, Dept Chem Engn, University Pk, PA 16802 USA

[2] Stanford Univ, Stanford, CA 94305 USA

[3] Penn State Univ, Mat Res Inst, University Pk, PA 16802 USA

来源：

PHYSICAL REVIEW LETTERS | 2012年 / 108卷 / 02期

基金：

美国国家科学基金会;

关键词：

HETEROJUNCTION SOLAR-CELLS; THIN-FILM TRANSISTORS; POLYMER-FULLERENE BLENDS; FIELD-EFFECT TRANSISTORS; CHARGE-TRANSPORT; DEVICE PHYSICS; HOLE MOBILITY; PERFORMANCE; GENERATION; MORPHOLOGY;

D O I：

10.1103/PhysRevLett.108.026601

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Recent evidence has demonstrated that amorphous mixed phases are ubiquitous within mesostructured polythiophene-fullerene mixtures. Nevertheless, the role of mixing within nanophases on charge transport of organic semiconductor mixtures is not fully understood. To this end, we have examined the electron mobility in amorphous blends of poly(3-hexylthiophene) and phenyl-C-61-butyric acid methyl ester. Our studies reveal that the miscibility of the components strongly affects electron transport within blends. Immiscibility promotes efficient electron transport by promoting percolating pathways within organic semiconductor mixtures. As a consequence, partial miscibility may be important for efficient charge transport in polythiophene-fullerene mixtures and organic solar cell performance.

引用

页数：5

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