Cai Hongyuan, Tang Qunwei, He Benlin, Li Ru, Yu Liangmin
Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, P.R. China.
Nanoscale. 2014 Dec 21;6(24):15127-33. doi: 10.1039/c4nr04911j. Epub 2014 Nov 5.
Pursuing a high power conversion efficiency with no sacrifice of cost-effectiveness has been a persistent objective for dye-sensitized solar cells (DSSCs). One promising solution to this impasse is increased light harvesting. Previous efforts in light harvesting have been made on setting blocking layers or reflecting layers, or adding a light harvester, resulting in tedious procedures without reducing the expenses. We present a mild solution strategy for synthesizing transparent Ru-Se alloy counter electrodes (CEs) for bifacial DSSC applications, displaying optimal front and rear efficiencies of 8.76% and 5.90%, respectively. In comparison with pristine Pt-based solar cells, the maximum power output has also been markedly enhanced. Moreover, fast start-up, high multiple start capability, and good stability are observed in the bifacial DSSCs with transparent Ru-Se binary alloy electrodes. The impressive efficiencies along with simple preparation of the cost-effective Ru-Se alloy CEs demonstrates their potential application in robust DSSCs.
在不牺牲成本效益的前提下追求高功率转换效率一直是染料敏化太阳能电池（DSSC）的一个长期目标。解决这一僵局的一个有前景的办法是增强光捕获。此前在光捕获方面的努力包括设置阻挡层或反射层，或添加光捕获剂，导致过程繁琐且成本并未降低。我们提出了一种温和的解决方案策略，用于合成用于双面DSSC应用的透明Ru-Se合金对电极（CE），其正面和背面的最佳效率分别为8.76%和5.90%。与原始的基于Pt的太阳能电池相比，最大功率输出也有显著提高。此外，在具有透明Ru-Se二元合金电极的双面DSSC中观察到了快速启动、高多次启动能力和良好的稳定性。具有成本效益的Ru-Se合金CE的制备简单且效率令人印象深刻，这证明了它们在坚固的DSSC中的潜在应用。
