Film Morphology of High Efficiency Solution-Processed Small-Molecule Solar Cells
| Autor: | John A. Love, Thuc-Quyen Nguyen, Guillermo C. Bazan, Christopher J. Takacs, Christopher M. Proctor, Alexander Sharenko, Jianhua Liu, Thomas S. van der Poll, Alan J. Heeger |
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| Rok vydání: | 2013 |
| Předmět: |
Diffraction
Materials science business.industry Thermal treatment Condensed Matter Physics Microstructure Small molecule Polymer solar cell Electronic Optical and Magnetic Materials Biomaterials Transmission electron microscopy Electrochemistry Optoelectronics Quantum efficiency business Single crystal |
| Zdroj: | Advanced Functional Materials. 23:5019-5026 |
| ISSN: | 1616-301X |
| DOI: | 10.1002/adfm.201300099 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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