MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, KLGHEI of Environment and Energy Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry and Chemical Engineering, Sun Yat-sen University , Guangzhou 510275, P. R. China.
ACS Appl Mater Interfaces. 2013 Nov 27;5(22):11865-71. doi: 10.1021/am4035653. Epub 2013 Nov 14.
A hierarchical macroporous Zn2SnO4-ZnO nanorod composite film is prepared through a drop-casting process of PS@Zn2SnO4 and subsequent hydrothermal growth of ZnO nanorod. CdS/CdSe co-sensitized solar cells based on the macroporous Zn2SnO4-ZnO nanorod composite photoelectrode exhibits an enhancement of 34.4% in power conversion efficiency (1.68%) compared to the pristine macroporous Zn2SnO4 photoelectrode (1.25%). Especially worth noting is that the growth of ZnO nanorods contributes greatly to the enlargement of surface area and improvement of light scattering ability of the composite film, which dominates the increase of Jsc values and eventual power conversion efficiency. QDSSCs based on the optimized 9 μm thick composite photoanode film exhibits a power conversion efficiency of 2.08%, which is the highest value for the reported QDs sensitized solar cells based on the Zn2SnO4 photoelectrode.
一种分级的多孔 Zn2SnO4-ZnO 纳米棒复合薄膜通过 PS@Zn2SnO4 的滴铸过程和 ZnO 纳米棒的随后水热生长制备而成。基于多孔 Zn2SnO4-ZnO 纳米棒复合光电阴极的 CdS/CdSe 共敏化太阳能电池的功率转换效率(1.68%)相比于原始多孔 Zn2SnO4 光电阴极(1.25%)提高了 34.4%。特别值得注意的是,ZnO 纳米棒的生长极大地促进了复合薄膜的比表面积增大和光散射能力的提高,这主导了 Jsc 值的增加以及最终的功率转换效率的提高。基于优化的 9μm 厚复合光阳极薄膜的 QDSSCs 表现出 2.08%的功率转换效率,这是基于 Zn2SnO4 光电阴极报道的 QDs 敏化太阳能电池的最高值。