Exciton diffusion and charge transfer dynamics in nano phase-separated P3HT/PCBM blend films
- 13 April 2011
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Nanoscale
- Vol. 3 (5) , 2280-2285
- https://doi.org/10.1039/c0nr01002b
Abstract
Exciton quenching dynamics has been systematically studied in pristine P3HT and nano phase separated P3HT/PCBM blend films under various excitation intensities by femtosecond fluorescence up-conversion technique. The behaviors of excitons in the films can be well described by a three-dimensional diffusion model. The small diffusion length and large charge transfer radius indicate that excitons reach the interface most likely by the delocalization of the excitons in P3HT fibrillar at a range of 4.8–9 nm so that the excitons can quickly delocalize in the P3HT domain to reach the interface (instead of by diffusion).This publication has 37 references indexed in Scilit:
- For the Bright Future—Bulk Heterojunction Polymer Solar Cells with Power Conversion Efficiency of 7.4%Advanced Materials, 2010
- High‐Efficiency Polymer Tandem Solar Cells with Three‐Terminal StructureAdvanced Materials, 2010
- Polymer solar cells with enhanced open-circuit voltage and efficiencyNature Photonics, 2009
- Recent Progress in Polymer Solar Cells: Manipulation of Polymer:Fullerene Morphology and the Formation of Efficient Inverted Polymer Solar CellsAdvanced Materials, 2009
- Nanoparticle–polymer photovoltaic cellsAdvances in Colloid and Interface Science, 2007
- A strong regioregularity effect in self-organizing conjugated polymer films and high-efficiency polythiophene:fullerene solar cellsNature Materials, 2006
- Morphology of polymer/fullerene bulk heterojunction solar cellsJournal of Materials Chemistry, 2005
- High-efficiency solution processable polymer photovoltaic cells by self-organization of polymer blendsNature Materials, 2005
- Nanoscale Morphology of High-Performance Polymer Solar CellsNano Letters, 2005
- Water/Methanol‐Soluble Conjugated Copolymer as an Electron‐Transport Layer in Polymer Light‐Emitting DiodesAdvanced Materials, 2005