| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 79471 | Solar Energy Materials and Solar Cells | 2012 | 7 Pages |
In this work composites of poly(3-hexylethiophene) (P3HT) and a thiophene derivative (7, 9-di (thiophen-2-yl)-8H-cyclopenta[a]acenaphthylen-8-one) (DTCPA) having donor acceptor architecture (DAD) were prepared. Photovoltaic properties of these hybrid composites were evaluated. DTCPA, which is a highly crystalline organic molecule with wide absorption range, was observed to improve the open circuit voltage of the solar cell. Furthermore, DTCPA crystals acts as a nucleating center and increases the molecular ordering of P3HT in the composite. Improved charge separation efficiency was observed by photoluminescence spectroscopy. Because of high built in potential in these devices, large open circuit voltage was observed.
Graphical AbstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► In this study we examine P3HT–DTCPA composite as the possible high open circuit voltage photovoltaic material. ► We observed that addition of DTCPA improves the absorption as well as crystallinity of P3HT. ► Further DTCPA improves both the exciton lifetime and charge separation.
