New 2,3-diphenylquinoxaline containing organic D-A-π-A dyes with nickel oxide photocathode prepared by surfactant-mediated synthesis for high performance p-type dye-sensitized solar cells
作者:Hulugirgesh Degefu Weldekirstos、Ming-Chung Kuo、Sie-Rong Li、Wei-Lin Su、Mekonnen Abebayehu Desta、Wen-Ti Wu、Chun-Hong Kuo、Shih-Sheng Sun
DOI:10.1016/j.dyepig.2018.12.042
日期:2019.4
diphenylquinoxaline incorporated within the molecular structure were prepared for p-type dye-sensitized solar cells with the newly prepared NiO as the photocathode. The new organic dyes consist of carboxylic acid as the anchoring group, triphenylamine as the electron donor, 2,3-diphenylquinoxaline as the auxiliary acceptor moiety, 2-methylenemalononitrile as electron acceptor, connected with thiophene, 3,4-ethylenedioxythiophene
染料敏化太阳能电池(DSSC)是最有前途的有机光伏电池之一。从理论上预测,结合n型和p型DSSC的串联电池的优化效率为43%。p型半电池限制了达到最佳性能的瓶颈,特别是缺少合适的半导体材料作为光电阴极。在这方面,我们报道了使用化学共沉淀法的表面活性剂介导的氧化镍纳米材料的合成。XRD,SEM,XPS,EDS和BET对新材料进行了全面表征。BET结果表明用表面活性剂合成的氧化镍纳米颗粒比常规的具有更高的表面积。此外,以新制备的NiO为光电阴极,制备了用于p型染料敏化太阳能电池的分子结构内结合有缺电子二苯基喹喔啉的新型有机染料。新的有机染料由羧酸作为锚定基团,三苯胺作为电子供体,2,3-二苯基喹喔啉作为辅助受体部分,2-亚甲基丙二腈作为电子受体并与噻吩,3,4-亚乙基二氧噻吩连接,并且2, 2'-联噻吩作为π-间隔基。具有单锚组的敏化剂(2-亚甲基丙二腈作为电子受体,与噻吩,3,4-乙撑二氧噻吩和2