Effects of functional groups at perylene diimide derivatives on organic photovoltaic device application
作者:Won Suk Shin、Hwan-Hee Jeong、Mi-Kyoung Kim、Sung-Ho Jin、Mi-Ra Kim、Jin-Kook Lee、Jae Wook Lee、Yeong-Soon Gal
DOI:10.1039/b512983d
日期:——
Four soluble perylene diimide derivatives (PDIs) have been prepared and their UV–visible and photoluminescence (PL) spectroscopy, cyclic voltammetry (CV) and thermal properties were studied. ITO/PEDOT∶PSS/poly(3-hexylthiophene) (P3HT)∶PDIs/LiF/Al photovoltaic devices were fabricated with PDIs as electron accepting and transporting materials. The highest incident photon-to-current conversion efficiency (IPCE) of 19% at 495 nm and the power conversion efficiency (PCE) of 0.18% under AM 1.5 (100 mW cm−2) with a short-circuit current density (JSC) of 1.32 mA cm−2, an open circuit voltage (VOC) of 0.36 V, and a fill factor (FF) of 0.38 have been achieved with 1 ∶ 4 ratio of P3HT
∶
N,N′-di(1-nonadecyl)perylene-3,4,9,10-bis(dicarboximide) (PDI-C9) after annealing at 80 °C for 1 h. 1,7-Bis(N-pyrrolidinyl)-N,N′-dicyclohexyl-3,4,9,10-perylenebis(dicarboximide) (5-PDI), which has the electron donating pyrrolidinyl group, absorbed the long wavelength region to give IPCE onset higher than 750 nm and the pyrrolidinyl group also raised the LUMO level of 5-PDI to render the high VOC (up to 0.71 V) in photovoltaic device.
制备了四种可溶性过二亚胺衍生物 (PDI),并研究了它们的紫外可见光和光致发光 (PL) 光谱、循环伏安 (CV) 和热性能。以 PDIs 为电子接受和传输材料,制备了 ITO/PEDOT∶PSS/poly(3-hexylthiophene) (P3HT)∶PDIs/LiF/Al 光伏器件。在 AM 1.5(100 mW cm-2)、短路电流密度(JSC)为 1.在 80 °C 下退火 1 小时后,1 ∶ 4 比率的 P3HT ∶ N,N′-二(1-壬癸基)过烯-3,4,9,10-双(二甲酰亚胺)(PDI-C9)实现了 0.32 mA cm-2、0.36 V 的开路电压(VOC)和 0.38 的填充因子(FF)。1,7-双(N-吡咯烷基)-N,N′-二环己基-3,4,9,10-过烯双(二甲酰亚胺)(5-PDI)具有电子捐赠的吡咯烷基团,可吸收长波长区域,使 IPCE 的起始波长高于 750 nm,吡咯烷基团还提高了 5-PDI 的 LUMO 水平,使光伏器件具有高 VOC(高达 0.71 V)。