Solvent-vapor treatment induced performance enhancement of poly(3-hexylthiophene):methanofullerene bulk-heterojunction photovoltaic cells
- 22 January 2007
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 90 (4), 043504
- https://doi.org/10.1063/1.2434173
Abstract
The authors report enhanced poly(3-hexylthiophene) (P3HT):methanofullerene (PCBM) bulk-heterojunction photovoltaic cells via 1,2-dichlorobenzene (DCB) vapor treatment and thermal annealing. DCB vapor treatment can induce P3HT self-organizing into ordered structure leading to enhanced absorption and high hole mobility. Further annealing the device at a high temperature, PCBM molecules begin to diffuse into aggregates and together with the ordered P3HT phase form bicontinuous pathways in the entire layer for efficient charge separation and transport. Compared to the control device that is merely annealed, optical absorption, short-circuit current, and power conversion efficiency are increased for the DCB vapor-treated cell.Keywords
This publication has 13 references indexed in Scilit:
- High-efficiency solution processable polymer photovoltaic cells by self-organization of polymer blendsNature Materials, 2005
- Thermally Stable, Efficient Polymer Solar Cells with Nanoscale Control of the Interpenetrating Network MorphologyAdvanced Functional Materials, 2005
- Correlation Between Structural and Optical Properties of Composite Polymer/Fullerene Films for Organic Solar CellsAdvanced Functional Materials, 2005
- Nanoscale Morphology of High-Performance Polymer Solar CellsNano Letters, 2005
- Device annealing effect in organic solar cells with blends of regioregular poly(3-hexylthiophene) and soluble fullereneApplied Physics Letters, 2005
- Conjugated Polymer Photovoltaic CellsChemistry of Materials, 2004
- Influence of nanomorphology on the photovoltaic action of polymer–fullerene compositesNanotechnology, 2004
- Effects of Postproduction Treatment on Plastic Solar CellsAdvanced Functional Materials, 2003
- Plastic Solar CellsAdvanced Functional Materials, 2001
- Polymer Photovoltaic Cells: Enhanced Efficiencies via a Network of Internal Donor-Acceptor HeterojunctionsScience, 1995