Kim Kyu Nam, Lee Sang Kyu, Lee Hye-Young, Kim Dong-Ha, Lee Jong-Cheol, Moon Sang-Jin
Energy Materials Research Center Korea Research Institute of Chemical Technology, Sinseongno 19, Yuseong, Daejeon, 305-600, Korea.
J Nanosci Nanotechnol. 2012 May;12(5):4228-32. doi: 10.1166/jnn.2012.5894.
A series of novel photoactive conjugated terpolymers based on N-alkyl carbazole, 9,9-didecylfluorene, and bis(thienyl)benzothiadiazole were synthesized by the Pd-catalyzed Suzuki polymerization method with various molar ratios of the carbazole derivatives. Electron-deficient benzothiadiazole and electron-rich carbazole moieties were incorporated into the polymer backbone to obtain the broad absorption spectrum and to improve the hole-transporting characteristics, respectively. The polymer solar cell (PSC) was fabricated with a layered structure of ITO/PEDOT: PSS/polymer:C71-PCBM (1:3)/LiF/Al. The best performance of PSC was obtained at P1:C71-PCBM whose reaches a power conversion efficiency (PCE) of 2.62%, with a short circuit current density (J(SC)) of 8.61 mA/cm2, an open circuit voltage (V(OC)) of 0.82 V, and a fill factor (FF) of 0.37 under AM 1.5 G irradiation (100 mW/cm2).
通过钯催化的铃木聚合方法，以不同摩尔比的咔唑衍生物合成了一系列基于N-烷基咔唑、9,9-二癸基芴和双（噻吩基）苯并噻二唑的新型光活性共轭三元共聚物。缺电子的苯并噻二唑和富电子的咔唑部分分别被引入聚合物主链，以获得宽吸收光谱并改善空穴传输特性。聚合物太阳能电池（PSC）采用ITO/PEDOT:PSS/聚合物:C71-PCBM（1:3）/LiF/Al的层状结构制备。在P1:C71-PCBM时获得了PSC的最佳性能，在AM 1.5 G光照（100 mW/cm2）下，其功率转换效率（PCE）达到2.62%，短路电流密度（J(SC)）为8.61 mA/cm2，开路电压（V(OC)）为0.82 V，填充因子（FF）为0.37。
