Xu Yang, Wang Xina, Liu Rong, Wang Hao
J Nanosci Nanotechnol. 2016 Apr;16(4):3622-7. doi: 10.1166/jnn.2016.11855.
Three-dimensional stacking of ZnO nanorods on conducting aluminum-doped ZnO (AZO) glass were studied as efficient photoanodes of dye sensitized solar cells (DSSCs). By changing hydrothermal growth time and cycle times, the thickness of ZnO nanorods stacking films varied from 30 µm to 64 µm, and its influence on the energetic conversion efficiency of the DSSCs based on the stacking films photoanodes was investigated. The loading density of N719 on the surface of ZnO nanorods was studied to increase the efficiency of the cells. Annealing experiments showed that the AZO substrates remained good conductors until heated above 350 °C. A photoelectric conversion efficiency as high as ~2.0% together with ISC of ~9.5 mA/cm2, VOC of ~0.5 V and FF of ~41.4% was achieved for the DSSC using 50 µm-thick film stacking by ZnO nanorods as photoanode and N719 as sensitizer under illumination of AM1.5G solar light (power density of 100 mW/cm2). A charge separation and transfer mechanism was proposed for the ZnO nanorods stacking electrode-based DSSCs.
研究了氧化锌纳米棒在导电掺铝氧化锌（AZO）玻璃上的三维堆叠，作为染料敏化太阳能电池（DSSC）的高效光阳极。通过改变水热生长时间和循环次数，氧化锌纳米棒堆叠薄膜的厚度从30微米变化到64微米，并研究了其对基于堆叠薄膜光阳极的DSSC能量转换效率的影响。研究了N719在氧化锌纳米棒表面的负载密度以提高电池效率。退火实验表明，AZO衬底在加热到350°C以上之前仍保持良好的导电性。在AM1.5G太阳光（功率密度为100 mW/cm2）照射下，以50微米厚的氧化锌纳米棒薄膜堆叠作为光阳极、N719作为敏化剂的DSSC实现了高达约2.0%的光电转换效率，短路电流密度（ISC）约为9.5 mA/cm2，开路电压（VOC）约为0.5 V，填充因子（FF）约为41.4%。提出了基于氧化锌纳米棒堆叠电极的DSSC的电荷分离和转移机制。
