染料敏化纳米薄膜太阳电池的新型对电极研究

STUDY ON NOVEL COUNTER ELECTRODES FOR DYE-SENSITIZED CRYSTALLINE SOLAR CELLS

研究了用金属基板和塑料薄膜制作的4种新型对电极和由这些对电极构成的染料敏化纳米薄膜太阳电池的性能。由不锈钢、镍片和导电聚合物膜为基材的对电极构成的太阳电池的光电转换效率近5％；不锈钢对电极可以通过降低内阻来改善大面积染料敏化纳米薄膜太阳电池的光电转换效率。此外,测试了这些金属基板和塑料薄膜在电解质溶液中的耐腐蚀性和稳定性；考察了由不锈钢和导电聚合物膜对电极构成的染料敏化纳米薄膜太阳电池的长期性能稳定性,并提出了改善这些新型对电极的长期性能稳定性的途径。

Four types of novel counter electrodes based on flexible metal and plastic substrates have been fabricated and performance characteristics of the dye-sensitized solar cells （DSCs） composed of these counter electrodes have been investigated. The DSCs composed of the counter electrodes based on a stainless steel substrate, a nickel sheet and a conducting plastic film, respectively. The solar conversion efficiencies of 5 % have obtained. The counter electrode based on the stainless steel substrate has the merit of improving the conversion efficiency of the DSCs by reducing its internal resistance. The stabilities of the metal and plastic substrates in the electrolyte solution were tested. The long-term stabilities of the DSCs based on these novel counter electrodes were examined, and the routes to improve the long-term stabilities of the DSCs were presented.