Charge carrier generation and exciton quenching at M3EH-PPV/small-molecule and M3EH-PPV/oxide interfaces
- Resource Type
- Conference
- Authors
- Brown, K.E.; Breeze, A.J.; Rumbles, G.; Gregg, B.A.; Parilla, P.A.; Perkins, J.D.; Tillman, H.; Horhold, H.-H.; Ginley, D.S.
- Source
- Conference Record of the Twenty-Ninth IEEE Photovoltaic Specialists Conference, 2002. Photovoltaic specialists conference 2002 Photovoltaic Specialists Conference, 2002. Conference Record of the Twenty-Ninth IEEE. :1186-1189 2002
- Subject
- Photonics and Electrooptics
Components, Circuits, Devices and Systems
Engineered Materials, Dielectrics and Plasmas
Power, Energy and Industry Applications
Charge carriers
Excitons
Photovoltaic systems
Solar power generation
Polymer films
Conducting materials
Semiconductor materials
Luminescence
Probes
Semiconductivity
- Language
The need for efficient exciton dissociation is one of the most important factors limiting improved efficiencies in organic photovoltaic devices. Using luminescence as a probe, we studied the quenching of excitons in semiconducting polymers for a variety of quenching materials, including transparent conducting oxides (TCOs) and small molecule perylene diimide thin films. Perylene benzimidazole (PBI) is shown to be the best quencher of those studied. This result is consistent with the improved conversion efficiencies demonstrated when this material is used in a polymer bilayer photovoltaic device.