| 초록 |
Polymer solar cells (PSCs) have attracted great attention due to their advantages of flexibility, lightweight, low costs of materials, and low fabrication costs. Recently, the series of poly(thieno[3,4-b]thiophene)benzothiophene (PTB) copolymers comprised of thieno[3,4-b]thiophene (TT) and benzo[1,2-b:4,5-b']dithiophene (BDT) segments have been developed for high-efficiency PSCs. Although the PTB copolymers possess excellent physical properties, they possess intrinsically a structural drawback, negatively influencing the photovoltaic performance of solar cell devices. However, in spite of intensive research for the PTB copolymers, little is known about the effect of the structural regioregularity of the PTB copolymers on the physical properties and photovoltaic performance because of synthetic difficulty of the regioregular PTB copolymers. In this talk, I will present synthesis and characterization of a regioregular p-type copolymer PBDTTT-C-T comprised of TT-BDT-TT-BDT repeating units and perfectly controlled TT orientation for high-efficiency PSCs. |
