Three-Dimensional Nanoscale Organization of Bulk Heterojunction Polymer Solar Cells

被引：399

作者：

van Bavel, Svetlana S. ^{[1
,2
]}

Sourty, Erwan ^{[1
,3
]}

de With, Gijsbertus ^{[1
]}

Loos, Joachim ^{[1
,2
]}

机构：

[1] Eindhoven Univ Technol, Lab Polymer Technol, Soft Matter CryoTEM Res Unit, Lab Mat & Interface Chem, NL-5600 MB Eindhoven, Netherlands

[2] Dutch Polymer Inst, NL-5600 AX Eindhoven, Netherlands

[3] FEI Co, NL-5651 GG Eindhoven, Netherlands

来源：

NANO LETTERS | 2009年 / 9卷 / 02期

关键词：

CHARGE-TRANSPORT; MORPHOLOGY; BLENDS; METHANOFULLERENE; NETWORK;

D O I：

10.1021/nl8014022

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In this study, the three-dimensional (3D) nanoscale organization in the photoactive layers of poly(3-hexylthiophene) (P3HT) and a methanofullerene derivative (PCBM) is revealed by electron tomography. Morphologies suggested by previous experimental evidence were, for the first time, observed directly with a nanometer resolution and studied in detail. After annealing treatment, either at elevated temperature or during slow solvent evaporation, genuine 3D nanoscale networks are formed with high crystalline order and favorable concentration gradients of both P3HT and PCBM through the thickness of the photoactive layer. These favorable morphological changes account for a considerable increase of the power conversion efficiency in corresponding solar cell devices.

引用

页码：507 / 513

页数：7

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