Jung In Hwan, Kim Hoyeon, Lee Wonho, Jung Byung Jun, Woo Han Young, Yoo Seunghyup, Shim Hong-Ku
J Nanosci Nanotechnol. 2014 Aug;14(8):6422-6. doi: 10.1166/jnn.2014.8788.
We have synthesized an anthracene-based conjugated polymer, poly[(9,10-bis(oct-1-ynyl)anthracene)-alt-(5,6-bis(octyloxy)-4,7-bis(thiophen-2-yl)benzo-[c][1,2,5]-thiadiazole)] (PANTBT), for application in organic photovoltaic devices. It exhibited a number average molecular weight of 14,300 g/mol and was fairly soluble in chlorinated organic solvents due to flexible octynyl- and octyloxy side chains on the anthracene and benzothiadiazole moieties. PANTBT showed absorption covering 300-660 nm. Through the bond alternation between the electron-sufficient anthracene (and thiophene) and electron-deficient benzothiadiazole units, a band gap of PANTBT was decreased to 1.89 eV, showing a deep HOMO level of -5.31 eV. As a result, PANTBT exhibited promising photovoltaic properties with a PCE value of 1.90% (VOC = 0.77 V, JSC = -6.50 mA/cm2, FF = 0.38) upon blending with PC71, BM under AM 1.5G.
我们合成了一种基于蒽的共轭聚合物，聚[(9,10-双(辛-1-炔基)蒽)-alt-(5,6-双(辛氧基)-4,7-双(噻吩-2-基)苯并-[c][1,2,5]-噻二唑)] (PANTBT)，用于有机光伏器件。它的数均分子量为14,300 g/mol，由于蒽和苯并噻二唑部分上有柔性的辛炔基和辛氧基侧链，它在氯化有机溶剂中相当易溶。PANTBT的吸收覆盖300 - 660 nm。通过电子充足的蒽(和噻吩)与缺电子的苯并噻二唑单元之间的键交替，PANTBT的带隙降至1.89 eV，显示出-5.31 eV的深HOMO能级。结果，在AM 1.5G条件下与PC71、BM共混时，PANTBT表现出有前景的光伏性能，PCE值为1.90% (VOC = 0.77 V，JSC = -6.50 mA/cm2，FF = 0.38)。
