Center for Next Generation Dye-Sensitized Solar Cells, WCU Program Department of Energy Engineering, Hanyang University, Seoul 133-791, South Korea.
ACS Appl Mater Interfaces. 2011 Jun;3(6):1838-43. doi: 10.1021/am2003735. Epub 2011 Jun 2.
Inorganic/organic nanocomposite counter electrodes comprised of sheetlike CoS nanoparticles dispersed in polystyrenesulfonate-doped poly(3,4-ethylenedioxythiophene (CoS/PEDOT:PSS) offer a synergistic effect on catalytic performance toward the reduction of triiodide for dye-sensitized solar cells (DSSCs), yielding 5.4% power conversion efficiency, which is comparable to that of the conventional platinum counter electrode (6.1%). The electrochemical impedance spectroscopy (EIS) and cyclic voltammetry measurements revealed that the composite counter electrodes exhibited better catalytic activity, fostering rate of triiodide reduction, than that of pristine PEDOT: PSS electrode. The simple preparation of composite (CoS/PEDOT:PSS) electrode at low temperature with improved electrocatalytic properties are feasible to apply in flexible substrates, which is at most urgency for developing novel counter electrodes for lightweight flexible solar cells.
由片状 CoS 纳米粒子分散在聚苯乙烯磺酸盐掺杂的聚（3,4-乙二氧基噻吩）（CoS/PEDOT:PSS）中组成的无机/有机纳米复合材料对染料敏化太阳能电池（DSSC）中三碘化物还原的催化性能具有协同作用，产生 5.4%的功率转换效率，可与传统的铂对电极（6.1%）相媲美。电化学阻抗谱（EIS）和循环伏安法测量表明，与原始的 PEDOT:PSS 电极相比，复合对电极表现出更好的催化活性，促进了三碘化物的还原速率。低温下简单制备的复合（CoS/PEDOT:PSS）电极具有改进的电催化性能，可应用于柔性衬底，这对于开发新型轻质柔性太阳能电池的对电极至关重要。
