Precisely positioning functionalized gold nanoparticles assemblies at planar donor-acceptor interfaces results in 14-fold enhancement of power conversion efficiency in P3HT/PCBM organic solar cells on plastic (ITO/PET) substrates. This result has been achieved by employing naphthalenethiol-capped gold nanoparticles (NT-Au-NPs) produced by laser ablation in liquid and size varied in the 10-30 nm range. Upon surface functionalization with the aromatic thiol, these particles self-assemble in submicrometer aggregates, which give increased light scattering. When these aggregates are deposited in the planar heterojunction between the donor and the acceptor systems, the localized scattering leads to a larger exciton formation just in the region of interest for charge transfer. (Graph Presented).
|Numero di pagine||12|
|Rivista||JOURNAL OF PHYSICAL CHEMISTRY. C|
|Stato di pubblicazione||Published - 2016|
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Physical and Theoretical Chemistry
- Surfaces, Coatings and Films
Pignataro, B. G., Vetri, V., Leone, M., Scopelliti, M., Cataldo, S., Sartorio, C., Scaramuzza, S., Scopelliti, M., & Amendola, V. (2016). Donor-Acceptor Interfaces by Engineered Nanoparticles Assemblies for Enhanced Efficiency in Plastic Planar Heterojunction Solar Cells. JOURNAL OF PHYSICAL CHEMISTRY. C, 120, 26588-26599.