The effect of five-membered heterocyclic bridges and ethoxyphenyl substitution on the performance of phenoxazine-based dye-sensitized solar cells
作者:Woosung Lee、Jun Choi、Jin Woong Namgoong、Se Hun Kim、Kyung Chul Sun、Sung Hoon Jeong、Kicheon Yoo、Min Jae Ko、Jae Pil Kim
DOI:10.1016/j.dyepig.2013.12.022
日期:2014.5
due to the red-shifted absorption spectra of the dyes. The ethoxyphenyl ring introduced to the phenoxazine moiety as an additional donor broadened the spectrum of the dye, while the reduced adsorption of the dye caused by its non-planar structure limited the enhancement of the short-circuit current. Among the synthesized dyes, the one with furan as a bridge unit showed the best overall conversion efficiency
合成了具有杂环桥单元和附加供体的苯恶嗪衍生物,并将其应用于染料敏化太阳能电池。为了研究这些取代基对DSSC性能的影响,研究了染料的光物理,电化学和光伏特性。引入的杂环桥单元呋喃和噻吩由于染料的红移吸收光谱而改善了短路电流。作为额外的供体引入到苯恶嗪部分中的乙氧基苯环扩大了染料的光谱,而由染料的非平面结构引起的染料吸附减少则限制了短路电流的增加。在合成染料中,以呋喃为桥单元的染料的最佳总转化效率为5.26%。