Spiro-Shaped cis-Stilbene/Fluorene Hybrid Template for the Fabrication of Small-Molecule Bulk Heterojunction Solar Cells
| Autor: | Chun-Ying Chiang, Fang-Yuan Tsai, Chih-Ping Chen, Chien-Tien Chen |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Fabrication Nanotechnology 02 engineering and technology Fluorene 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Small molecule Polymer solar cell 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials law.invention Solvent chemistry.chemical_compound General Energy Microcrystalline Chemical engineering chemistry law Solar cell Physical and Theoretical Chemistry 0210 nano-technology Current density |
| Zdroj: | The Journal of Physical Chemistry C. 121:15943-15948 |
| ISSN: | 1932-7455 1932-7447 |
| DOI: | 10.1021/acs.jpcc.7b05528 |
| Popis: | A spiro core appended with trithiophene arms and α-cyanoacrylate end groups was used for the first time in bulk heterojunction solar cell applications. The resulting device performance was evaluated by its blending with PC61BM, leading to a short-circuit current density (Jsc) of 3.55 mA cm–2 which was 2.4 and 6.6 times better than those of the open form and nonspiro core analogs. The 1,8-diiodooctane solvent additive suppressed its microcrystalline self-aggregation, leading to a well-defined blend film morphology with reduced domain size and thus enhanced Jsc to 6.14 mA cm–2 and fill factor to 67.2% by 70% and 135% increase, respectively. The film domain size can be further reduced to 50 nm by its blending with PC71BM, leading to a PCE of 4.87% with an improved Jsc of 7.93 mA cm–2, a Voc of 0.97 V, and a fill factor of 64.1%. |
| Databáze: | OpenAIRE |
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