Photo induced charge separation between a conjugated polymer poly-3-hexyl-thiophene (P3HT) coupled with a series of light harvesting molecular dyes were systematically investigated and compared for potential optoelectronic applications. Specifically, the optical absorption and the photoluminescence emission quenching Stern-Volmer plots of P3HT with three dyes (TCPP, Hemin and protoporphyrin, see <b>Figure 1</b>) were evaluated, and the solar cell devices based on P3HT/Dye/PC<sub>60</sub>BM were fabricated and compared. Preliminary data shows the power conversion efficiencies (η) of the fabricated solar cells follow the PL quenching or the Ksv curved trend but not the absorption coefficients and the frontier orbital LUMO energy offsets (which are the key photo induced charge separation driving force). Additionally, the polymer–dye pair that exhibits biggest PL quenching was covalently linked, and its solar cell device performance is compared with corresponding physical blend.

Conjugated polymer-dye weakly coupled covalent assembly for optoelectronics

254th National Meeting (2017)

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.