基于三维ZnO/TiO_2复合纳米结构的钙钛矿太阳能电池增效研究

Enhanced Device Performance of Perovskite Solar Cells with 3D ZnO/TiO_2 Electron Transport Layers

利用电化学沉积和原子力沉积方法(ALD)制备了三维ZnO/TiO_2复合纳米结构,利用SEM和TEM对其复合纳米结构进行了分析。利用三维ZnO/TiO_2复合纳米结构作为电子传输层构建了钙钛矿太阳能电池(PSCs)。研究表明:复合纳米结构所对应太阳能电池的短路电流、开路电压、填充因子相比只用ZnO作为电子传输层的太阳能电池分别提高了39%、10%和9%,光电转换效率也从6.66%提高到了11.13%。分析表明三维ZnO/TiO_2复合纳米结构很好地抑制了光生载流子的复合,进而提高了钙钛矿太阳能电池的光电效率。

Three-dimensional ZnO/TiO2 composite nanostructures were prepared by electrochemical deposition and atomic force deposition（ALD）.The nanostructures were analyzed by SEM and TEM.Perovskite solar cells（PSCs）were prepared by using three-dimensional ZnO/TiO2 nanostructures as electron transport layer.The results show that the short-circuit current,opencircuit voltage and filling factor of the solar cells increase 39%,10% and 9% than those of the ZnO-based solar cells,respectively.The conversion efficiency of the solar cells increases from 6.66% to 11.13%.The results show that the threedimensional ZnO/TiO2 composite nanostructures can effectively suppress the recombination of photogenerated carriers and improve the photoelectric conversion efficiency of perovskite solar cells.