| 초록 |
Dye-Sensitized Solar Cells have attracted much attention in recent years due to their potential advantages of low cost, ease of production, flexibility, and transparency compared with the conventional crystalline silicon solar cells. Many metal-free organic dyes have been used in DSSCs such as coumarin, merocyamine, indoline or polyene which possesses the molecular structure of the electron donor and the acceptor bridged by the conjugated chain (D- π-A). In this article, we have developed novel organic dyes in which the ullazine core was used as the π –bridge and various donor groups were added for the application of DSSCs. An aromatic, 14 π – electron annulene resonance structure consisting of a centralized electron density from the inplane nitrogen provides the potential donating strength as well as electron stabilizing properties of this nitrogen-containing heterocycle. |
