Rubbing effects on the structural and optical properties of poly(3-hexylthiophene) films

被引：16

作者：

Abbas, M. ^{[1
]}

D'Amico, F. ^{[2
]}

Ali, M. ^{[1
]}

Mencarelli, I. ^{[3
]}

Setti, L. ^{[3
]}

Bontempi, E. ^{[4
]}

Gunnella, R. ^{[1
]}

机构：

[1] Univ Camerino, CNISM, I-62032 Camerino, MC, Italy

[2] Sincrotrone Trieste SCpA, I-34012 Trieste, Italy

[3] Univ Bologna, Dept Ind & Mat Chem, I-40136 Bologna, Italy

[4] Univ Brescia, Chem Technol Lab, I-25123 Brescia, Italy

来源：

JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2010年 / 43卷 / 03期

关键词：

FIELD-EFFECT MOBILITY; POLYMER THIN-FILM; MOLECULAR-WEIGHT; CONJUGATED POLYMERS; EFFECT TRANSISTORS; CHARGE-TRANSPORT; POLYTHIOPHENE; DEPENDENCE; MORPHOLOGY; POLY(3-ALKYLTHIOPHENES);

D O I：

10.1088/0022-3727/43/3/035103

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Steady state photoconductivity and x-ray diffraction combined with optical and electronic spectroscopies were applied to study spin coated poly(3-hexylthiophene) (P3HT) films mechanically rubbed using a teflon bar. As expected, photoconductivity evidenced a strong increase in the photo-response along the rubbing direction. But, while rubbing during annealing at a temperature of 70 degrees C resulted in a sizeable photocurrent anisotropy along the direction parallel or perpendicular to the rubbing, the samples rubbed at room temperature (RT) showed an isotropic and comparatively stronger enhancement of absorption and photoconductivity spectral features. According to these observations, rubbing at RT resulted in a significant increase in local order and macroscopic alignment of the film, while a higher degree of global order but with a relaxed local structure was obtained after rubbing at 70 degrees C.

引用

页数：7

共 34 条

[1] Structural features in aligned poly (3-alkylthiophene) films revealed by grazing incidence X-ray diffraction [J].