Controlled dispersion of polystyrene‐capped A u nanoparticles in P 3 HT : PC 61 BM and consequences upon active layer nanostructure
| Autor: | Laura Fabris, Christopher Bailey, Robert C. Wadams, Hilmar Koerner, Dennis P. Butcher, Christopher E. Tabor, Lawrence F. Drummy, Frank J. Scheltens, Michael F. Durstock, David W. McComb |
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| Rok vydání: | 2015 |
| Předmět: |
Materials science
Nanostructure Polymers and Plastics Nanoparticle Nanotechnology 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 7. Clean energy 01 natural sciences Polymer solar cell 0104 chemical sciences chemistry.chemical_compound Chemical engineering chemistry Phase (matter) Materials Chemistry Particle Polystyrene Physical and Theoretical Chemistry Surface plasmon resonance 0210 nano-technology Dispersion (chemistry) |
| Zdroj: | Journal of Polymer Science Part B: Polymer Physics. 54:709-720 |
| ISSN: | 1099-0488 0887-6266 |
| DOI: | 10.1002/polb.23962 |
| Popis: | Numerous recent publications detail higher absorption and photovoltaic performance within organic photovoltaic (OPV) devices which are loaded with Au or Ag nanoparticles to leverage the light management properties of the localized surface plasmon resonance (LSPR). This report details the impact upon film morphology and polymer/nanoparticle interactions caused by incorporation of polystyrene-coated Au nanoparticles (Au/PS) into the P3HT:PC61BM bulk heterojunction film. Nanostructural analysis by transmission electron microscopy and X-ray scattering reveals tunable Au/PS particle assembly that depends upon the choice of casting solvent, polymer chain length, film drying time, and Au/PS particle loading density. This Au/PS particle assembly has implications on the spectral position of the Au nanoparticle LSPR, which shifts from 535 nm for individually dispersed particles in toluene to 650 nm for particles arranged in large clusters within the P3HT:PC61BM matrix. These results suggest a critical impact from PS/P3HT phase separation, which causes controlled assembly of a separate Au/PS phase in the nanoparticle/OPV composite; controlled Au/PS phase formation provides a blueprint for designing AuNP/OPV hybrid films that impart tunable optical behavior and potentially improve photovoltaic performance. © 2015 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2016, 54, 709–720 |
| Databáze: | OpenAIRE |
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