Abstract
Polymer blend photovoltaic devices (see Figure) are investigated and the characteristic electron and hole lengths estimated. It is found that for a polymer film exhibiting fine-scale phase separation, only charges generated close to the electrode can be collected. The open-circuit voltage for polymer blend devices is found to be lower than that for bilayer devices, a result of the direct paths from cathode to anode within each blend component.
Keywords
Materials sciencePolyfluoreneAnodeOpen-circuit voltagePolymerCathodePhotovoltaic systemOptoelectronicsElectrodeBilayerPolymer blendVoltageCopolymerComposite materialMembraneElectrical engineering
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Publication Info
- Year
- 2004
- Type
- article
- Volume
- 16
- Issue
- 18
- Pages
- 1640-1645
- Citations
- 123
- Access
- Closed
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Cite This
Henry J. Snaith,
Neil C. Greenham,
Richard H. Friend
(2004).
The Origin of Collected Charge and Open‐Circuit Voltage in Blended Polyfluorene Photovoltaic Devices.
Advanced Materials
, 16
(18)
, 1640-1645.
https://doi.org/10.1002/adma.200305766
Identifiers
- DOI
- 10.1002/adma.200305766