Film Morphology of High Efficiency Solution-Processed Small-Molecule Solar Cells

被引：193

作者：

Love, John A. ^{[1
]}

Proctor, Christopher M. ^{[1
]}

Liu, Jianhua ^{[1
]}

Takacs, Christopher J. ^{[1
]}

Sharenko, Alexander ^{[1
]}

van der Poll, Thomas S. ^{[1
]}

Heeger, Alan J. ^{[1
]}

Bazan, Guillermo C. ^{[1
]}

Thuc-Quyen Nguyen ^{[1
]}

机构：

[1] Univ Calif Santa Barbara, Ctr Polymers & Organ Solids, Santa Barbara, CA 93106 USA

来源：

ADVANCED FUNCTIONAL MATERIALS | 2013年 / 23卷 / 40期

基金：

美国国家科学基金会;

关键词：

bulk heterojunction solar cells; small molecules; film morphology; ELECTRON-MICROSCOPY; ORGANIC SEMICONDUCTORS; CRYSTAL-STRUCTURES; PHASE-SEPARATION; ENERGY-LEVELS; PERFORMANCE; DONOR;

D O I：

10.1002/adfm.201300099

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Morphological control over the bulk heterojunction (BHJ) microstructure of a high-efficiency small molecule photovoltaic system is demonstrated using both thermal treatment and solvent additive processing. Single crystal X-ray diffraction is utilized to understand molecular interactions in the solid state and the BHJ morphology is examined using bright field, high-resolution, and cross-section transmission electron microscopy techniques. Controlling the domain size, while maintaining good molecular order within the semiconducting donor material, is found to be crucial in achieving high performance and over 90% internal quantum efficiency exhibited under the optimized conditions.

引用

页码：5019 / 5026

页数：8

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