| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 78580 | Solar Energy Materials and Solar Cells | 2013 | 7 Pages |
Bulk heterojunction binary blends of poly(2,3-dihexylthieno(3,4-b)pyrazine) (pC6TP) and [6,6]-phenyl-C61-butyric acid methylester (PCBM) have been prepared and studied as near infra-red (NIR) organic photonic devices. Photocurrent contributions from both components are observed and show a photoresponse down to approximately 1 eV. The performance of the devices as a function of annealing time is investigated. A model for the effect of structure on the NIR response of these devices is developed and highlights the ambipolar nature of pC6TP as a charge transport material.
Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► Near-IR organic photonic devices based on pC6TP were fabricated and characterized. ► We observe a photoresponse down to approximately 1 eV. ► We study the effect of annealing and solvent on the NIR response. ► We propose a structural model for device function. ► The model is consistent with pC6TP acting as an ambipolar charge transport material.
