Multilayer heterojunction photovoltaic cells were fabricated using a solution processable pentacene derivative as the donor layer. Upon annealing of these devices, the open circuit voltage was found to gradually increase with temperature up to 265 °C. Further improvement in the photovoltaic performance was achieved with the incorporation of mobile ions into the donor material for concentrations of lithium triflate up to 1.4 mg/ml. Finally, after introducing an exciton blocking layer, an optimized white-light (100 mW/cm2) power conversion efficiency of 0.52% was achieved.
|Number of pages||6|
|State||Published - Oct 2006|
Bibliographical noteFunding Information:
This work was made possible by funding from the Office of Naval Research. Additional thanks are due to the Cornell Center of Materials Research, as well as Christopher Umbach, Anthony Condon, and Maura Weathers for assistance with AFM, TGA, and XRD measurements.
- Functionalized pentacene
- Mobile ions
- Organic photovoltaics
- Pentacene derivatives
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Chemistry (all)
- Condensed Matter Physics
- Materials Chemistry
- Electrical and Electronic Engineering