Electrostatic Self-Assembly Conjugated Polyelectrolyte-Surfactant Complex as an Interlayer for High Performance Polymer Solar Cells

被引：104

作者：

Chang, Yi-Ming ^{[1
,2
]}

Zhu, Rui ^{[1
]}

Richard, Eric ^{[1
]}

Chen, Chun-Chao ^{[1
]}

Li, Gang ^{[1
]}

Yang, Yang ^{[1
]}

机构：

[1] Univ Calif Los Angeles, Dept Mat Sci & Engn, Los Angeles, CA 90095 USA

[2] Ind Technol Res Inst, Elect & Optoelect Res Labs, Hsinchu 31040, Taiwan

来源：

ADVANCED FUNCTIONAL MATERIALS | 2012年 / 22卷 / 15期

关键词：

polymer solar cells; conjugated polyelectrolyte; interlayer; electrostatic self-assembly; OPEN-CIRCUIT VOLTAGE; HIGH-EFFICIENCY; PHOTOVOLTAIC CELLS; CATIONIC POLYTHIOPHENE; ORGANIC PHOTOVOLTAICS; INTERFACIAL LAYER; BILAYER CATHODE; TITANIUM-OXIDE; METAL; DONOR;

D O I：

10.1002/adfm.201200738

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A simple method is demonstrated to improve the film-forming properties and air stability of a conjugated polyelectrolyte (CPE) without complicated synthesis of new chemical structures. An anionic surfactant, sodium dodecybenzenesulfonate (SDS), is mixed with cationic CPEs. The electrostatic attraction between these two oppositely-charged materials provides the driving force to form a stable CPE-surfactant complex. Compared with a pure CPE, this electrostatic complex is not only compatible with highly hydrophobic bulk-heterojunction (BHJ) films, e.g. poly(3-hexylthiophene):[6,6]-phenyl C61 butyric acid methyl ester (P3HT:PCBM), but also works well with other low bandgap polymer-based BHJ films. Using this complex as a cathode interface layer, a high power conversion efficiency of 4% can be obtained in P3HT:PCBM solar cells together with improved stability in air. Moreover, 20% performance enhancement can also be achieved when the complex is used as an interlayer to replace calcium metal for low bandgap polymer-based BHJ systems.

引用

页码：3284 / 3289

页数：6

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