Effects of direct solvent exposure on the nanoscale morphologies and electrical characteristics of PCBM-based transistors and photovoltaics

被引：80

作者：

Nam, Sooji ^{[1
]}

Jang, Jaeyoung ^{[1
]}

Cha, Hyojung ^{[1
]}

Hwang, Jihun ^{[1
]}

An, Tae Kyu ^{[1
]}

Park, Seonuk ^{[1
]}

Park, Chan Eon ^{[1
]}

机构：

[1] Pohang Univ Sci & Technol, Dept Chem Engn, Polymer Res Inst, POSTECH Organ Elect Lab, Pohang 790784, South Korea

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2012年 / 22卷 / 12期

关键词：

THIN-FILM TRANSISTORS; POLYMER SOLAR-CELLS; PERFORMANCE; MOBILITY; PASSIVATION; STABILITY; TRANSPORT; NETWORK;

D O I：

10.1039/c2jm15260f

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We investigated the effects of direct solvent exposure on the properties of [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) films and poly(3-hexylthiophene) (P3HT)/PCBM blend films employed as active layers in, respectively, organic field-effect transistors (OFETs) and organic photovoltaics (OPVs). The crystallinity, morphology, and OFET characteristics of the PCBM thin films were significantly influenced by direct exposure to solvent, especially to select alcohols. Control over the nanoscale morphology of the PCBM film, achieved via direct solvent exposure, yielded highly efficient poly-(3-hexylthiophene) (P3HT)/PCBM OPVs with a short-circuit current density of 10.2 mA cm(-2), an open-circuit voltage of 0.64 V, and a power conversion efficiency of 3.25% under AM 1.5 illumination with a light intensity of 100 mW cm(-2). These results indicated that optimal phase separation in the P3HT/PCBM films could be obtained simply by exposing the active layer films for a few seconds to solvent.

引用

页码：5543 / 5549

页数：7

共 43 条

[1] New air-stable n-channel organic thin film transistors [J].