semiconductor based on benzotriazole and selenophene was designed and synthesized. The benzotriazole-selenophene copolymer (P(BTz-Se)) showed a highly crystalline lamellar packing structure with a lamellar interchain distance of 1.77 nm and large mean crystalline domain size of 17.26 nm. The average field-effect hole mobility of an as-cast P(BTz-Se) film was 2.93×10−4 cm2 V−1 s−1. After annealing the polymer
设计并合成了一种基于苯并三唑和
硒烯的新型供体(D)-受体(A)型共聚物半导体。苯并三唑-
硒烯共聚物(P(BTz-Se))显示出高度结晶的层状堆积结构,层状链间距离为1.77 nm,平均晶体畴尺寸较大,为17.26 nm。铸态P(BTz-Se)薄膜的平均场效应空穴迁移率是2.93×10 -4 cm 2 V -1 s -1。在150°C下对聚合物膜进行退火后,平均空穴迁移率提高了55倍(1.61×10 -2 cm 2 V -1 s -1)具有高的开/关电流比(1.7×10 6)被观察到。P(BTz-Se)除了具有高的电荷载流子迁移率外,还显示出窄的能带隙(1.69 eV)和宽的光吸收范围以及出色的吸收系数,表明该共聚物半导体在有机光伏器件中也可能是良好的电子供体。