Shengyuan Yang, Nair A Sreekumaran, Ramakrishna Seeram
J Nanosci Nanotechnol. 2015 Jan;15(1):721-5. doi: 10.1166/jnn.2015.9169.
Various TiO2 building blocks i.e., spheres (S-TiO2), rods (R-TiO2) grains (G-TiO2) were produced by electrospinning technique and sensitized by CdS via successive ionic layer adsorption and reaction (SILAR) to investigate their morphological effect on the photovoltaic properties of quantum dot-sensitized solar cells (QDSCs). It was found that QDSCs with G-TiO2 achieved the highest overall conversion efficiency of 1.74% under one-sun AM1.5G illumination, which corresponds to an increase of -100% (0.87%) compared with S-TiO2 and -35% (1.29%) with R-TiO2, respectively. Electrochemical impedance spectroscopy shows a largest recombination resistance for G-TiO2 cells amongst the three which accounts for its superior photovoltaic performance.
通过静电纺丝技术制备了各种二氧化钛结构单元，即球体（S-TiO₂）、棒体（R-TiO₂）和颗粒（G-TiO₂），并通过连续离子层吸附和反应（SILAR）用硫化镉对其进行敏化，以研究它们对量子点敏化太阳能电池（QDSC）光伏性能的形态学影响。结果发现，在一个太阳AM1.5G光照下，具有G-TiO₂的QDSC实现了1.74%的最高总转换效率，与S-TiO₂相比，分别提高了-100%（0.87%），与R-TiO₂相比提高了-35%（1.29%）。电化学阻抗谱表明，在这三种电池中，G-TiO₂电池的复合电阻最大，这说明了其优异的光伏性能。
