Prolonging Charge Separation in P3HT−SWNT Composites Using Highly Enriched Semiconducting Nanotubes
- 12 October 2010
- journal article
- Published by American Chemical Society (ACS) in Nano Letters
- Vol. 10 (11), 4627-4633
- https://doi.org/10.1021/nl102753z
Abstract
Single-walled carbon nanotubes (SWNTs) have potential as electron acceptors in organic photovoltaics (OPVs), but the currently low-power conversion efficiencies of devices remain largely unexplained. We demonstrate effective redispersion of isolated, highly enriched semiconducting and metallic SWNTs into poly(3-hexylthiophene) (P3HT). We use these enriched blends to provide the first experimental evidence of the negative impact of metallic nanotubes. Time-resolved microwave conductivity reveals that the long-lived carrier population can be significantly increased by incorporating highly enriched semiconducting SWNTs into semiconducting polymer composites.Keywords
This publication has 28 references indexed in Scilit:
- Photoinduced Energy and Charge Transfer in P3HT:SWNT CompositesThe Journal of Physical Chemistry Letters, 2010
- Solar cell efficiency tables (version 36)Progress In Photovoltaics, 2010
- Photoresponse in Self-Assembled Films of Carbon NanotubesThe Journal of Physical Chemistry C, 2008
- Role of Semiconducting and Metallic Tubes in P3HT/Carbon-Nanotube Photovoltaic Heterojunctions: Density Functional Theory CalculationsNano Letters, 2008
- Charge Carrier Formation in Polythiophene/Fullerene Blend Films Studied by Transient Absorption SpectroscopyJournal of the American Chemical Society, 2008
- Carbon nanotubes as integrative materials for organic photovoltaic devicesJournal of Materials Chemistry, 2008
- The Locus of Free Charge‐Carrier Generation in Solution‐Cast Zn1–xMgxO/Poly(3‐hexylthiophene) Bilayers for Photovoltaic ApplicationsAdvanced Functional Materials, 2007
- Signature of exciton annihilation in the photoconductance of regioregular poly(3-hexylthiophene)Physical Review B, 2005
- Electrodeless time-resolved microwave conductivity study of charge-carrier photogeneration in regioregular poly(3-hexylthiophene) thin filmsPhysical Review B, 2004
- Dependence of Optical Transition Energies on Structure for Single-Walled Carbon Nanotubes in Aqueous Suspension: An Empirical Kataura PlotNano Letters, 2003