Organic semiconductor core-shell nanoparticles designed through successive solvent displacements
SCHATZ, Christophe
Laboratoire de Chimie des Polymères Organiques [LCPO]
Team 3 LCPO : Polymer Self-Assembly & Life Sciences
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Laboratoire de Chimie des Polymères Organiques [LCPO]
Team 3 LCPO : Polymer Self-Assembly & Life Sciences
SCHATZ, Christophe
Laboratoire de Chimie des Polymères Organiques [LCPO]
Team 3 LCPO : Polymer Self-Assembly & Life Sciences
< Réduire
Laboratoire de Chimie des Polymères Organiques [LCPO]
Team 3 LCPO : Polymer Self-Assembly & Life Sciences
Langue
en
Article de revue
Ce document a été publié dans
Materials Horizons. 2014, vol. 1, n° 4, p. 431-438
cRoyal Society of Chemistry
Résumé en anglais
This study reports for the first time the elaboration of core-shell organic nanoparticles through successive solvent displacements. The concept has been applied to generate donor-acceptor nanoparticles with the commonly ...Lire la suite >
This study reports for the first time the elaboration of core-shell organic nanoparticles through successive solvent displacements. The concept has been applied to generate donor-acceptor nanoparticles with the commonly used organic semiconductors P3HT and PCBM. The strategy is based on the sequential nanoprecipitation of P3HT and PCBM. Starting from a P3HT:PCBM solution in THF, the first solvent displacement with DMSO triggers the formation of the P3HT core while the second displacement with water generates the PCBM shell. The core-shell morphology is evidenced by both DLS and TEM. Efficient quenching of the P3HT photoluminescence is observed after the second solvent displacement procedure, confirming the formation of a well-defined PCBM shell around the P3HT core. Studying the emission of such core-shell nanoparticles leads to an estimation of the diffusion length of photogenerated excitons in P3HT of around [similar]14 nm.< Réduire
Mots clés en anglais
WATER
PHASE-SEPARATION
POLY(3-HEXYLTHIOPHENE)
COMPOSITE P3HT/PCBM NANOPARTICLES
DONOR-ACCEPTOR HETEROJUNCTIONS
PHOTOINDUCED ELECTRON-TRANSFER
PHOTOVOLTAIC DEVICES
SOLAR-CELLS
POLYMER NANOPARTICLES
EXCITON DIFFUSION
Origine
Importé de halUnités de recherche