Real-Time Observation of Poly(3-alkylthiophene) Crystallization and Correlation with Transient Optoelectronic Properties

被引：96

作者：

Boudouris, Bryan W. ^{[1
,2
]}

Ho, Victor ^{[1
,2
]}

Jimison, Leslie H. ^{[3
]}

Toney, Michael F. ^{[4
]}

Salleo, Alberto ^{[3
]}

Segalman, Rachel A. ^{[1
,2
]}

机构：

[1] Univ Calif Berkeley, Dept Chem & Biomol Engn, Berkeley, CA 94720 USA

[2] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA

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

[4] Stanford Synchrotron Radiat Lightsource, Menlo Pk, CA 94025 USA

来源：

MACROMOLECULES | 2011年 / 44卷 / 17期

基金：

美国国家科学基金会;

关键词：

FIELD-EFFECT MOBILITY; REGIOREGULAR POLY(3-HEXYLTHIOPHENE); CHARGE-TRANSPORT; SEMICONDUCTING POLYMERS; SOLAR-CELLS; THIN-FILMS; LUMINESCENCE; COPOLYMERS; DEPENDENCE; MORPHOLOGY;

D O I：

10.1021/ma201316a

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A study was conducted to correlate the physics of semicrystalline ordering of a poly(3-hexylthiophene) (P3HT) thin film to the polymer's optoelectronic properties utilizing in situ measurements on an experimentally convenient time scale when quenching from the melt to room temperature. It was demonstrated that the field-effect transistor (FET) hole mobilities suddenly increased 60-fold at a threshold time, while the polymer crystallinity continually increased over time. The mobility onset was attributed to the formation of a thin film crystalline network in an amorphous matrix. It was also shown that the evolution of ultraviolet-visible (UV-vis) absorption and photoluminescence (PL) profiles in the thin film correlated well with the polymer crystallization. The polymer solidification process was readily observed as the crystal structure of the P3EHT thin film was monitored as a function of time after quenching to room temperature with grazing-incidence X-ray diffraction (GI-XRD).

引用

页码：6653 / 6658

页数：6

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