Layer-by-Layer Graphene/TCNQ Stacked Films as Conducting Anodes for Organic Solar Cells

被引：174

作者：

Hsu, Chang-Lung ^{[1
]}

Lin, Cheng-Te ^{[2
]}

Huang, Jen-Hsien ^{[3
]}

Chu, Chih-Wei ^{[3
]}

Wei, Kung-Hwa ^{[1
]}

Li, Lain-Jong ^{[2
]}

机构：

[1] Natl Chiao Tung Univ, Dept Mat Sci & Engn, Hsinchu 300, Taiwan

[2] Acad Sinica, Inst Atom & Mol Sci, Taipei 11529, Taiwan

[3] Acad Sinica, Res Ctr Appl Sci, Taipei 11529, Taiwan

来源：

ACS NANO | 2012年 / 6卷 / 06期

关键词：

graphene anodes; transparent conducting electrodes; organic solar cell; organic photovoltaic cell; layer-by-layer; doping; TCNQ; CHEMICAL-VAPOR-DEPOSITION; NANOTUBE NETWORK ELECTRODES; LARGE-AREA; OXIDE-FILMS; TRANSPARENT ELECTRODES; CARBON NANOTUBES; PHOTOVOLTAICS; TRANSISTORS; SHEETS; OPTOELECTRONICS;

D O I：

10.1021/nn301721q

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Large-area graphene grown by chemical vapor deposition (CVD) is a promising candidate for transparent conducting electrode applications in flexible optoelectronic devices such as light-emitting diodes or organic solar cells. However, the power conversion efficiency (PCE) of the polymer photovoltaic devices using a pristine CVD graphene anode is still not appealing due to its much lower conductivity than that of conventional indium tin oxide. We report a layer-by-layer molecular doping process on graphene for forming sandwiched graphene/tetracyanoquinodimethane (TCNQ)/graphene stacked films for polymer solar cell anodes, where the TCNQ molecules (as p-dopants) were securely embedded between two graphene layers. Poly(3-hexylthiophene)/phenyl-C61-butyric acid methyl ester (P3HT/PCBM) bulk heterojunction polymer solar cells based on these multilayered graphene/TCNQ anodes are fabricated and characterized. The P3HT/PCBM device with an anode structure composed of two TCNQ layers sandwiched by three CVD graphene layers shows optimum PCE (similar to 2.58%), which makes the proposed anode film quite attractive for next-generation flexible devices demanding high conductivity and transparency.

引用

页码：5031 / 5039

页数：9

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