| 초록 |
In the presentation, we report the syntheses and electrical properties of the selenophene based polymers. These polymers, poly(3,3-alkylterselenophene) (PS3), poly(3,3-alkylquaterselenophene) (PS4), poly(3,3-alkylterselenophene-co-biselenophene) (PS5) and poly(3,3-alkylquaterselenophene-co-biselenophene) (PS6), were synthesized via Yamamoto and Stille coupling reaction. The synthesized polymers were well dissolved in common organic solvents, such as chloroform, THF and chlorobenzene due to the incorporation of the long alkyl side chains in the polymer backbones. Thin solid films of PS3, PS4, PS5 and PS6 exhibited the UV-visble absorption maxima at 571, 546, 496, and 518 nm, respectively. And the optical band gap (eV) of the PS3, PS4, PS5 and PS6 showed 1.74, 1.77, 2.02, and 1.95 eV, respectively. The power conversion efficiencies of organic photovoltaic devices fabricated with these polymers as the donor materials and PCBM as the acceptor materials were ranged from 0.95 to 2.0 %. |
