Molecular Engineering of Simple Phenothiazine‐Based Dyes To Modulate Dye Aggregation, Charge Recombination, and Dye Regeneration in Highly Efficient Dye‐Sensitized Solar Cells
作者:Yong Hua、Shuai Chang、Jian He、Caishun Zhang、Jianzhang Zhao、Tao Chen、Wai‐Yeung Wong、Wai‐Kwok Wong、Xunjin Zhu
DOI:10.1002/chem.201304897
日期:2014.5.19
A series of simple phenothiazine‐based dyes, namely, TP, EP, TTP, ETP, and EEP have been developed, in which the thiophene (T), ethylenedioxythiophene (E), their dimers, and mixtures are present to modulate dye aggregation, charge recombination, and dye regeneration for highly efficient dye‐sensitized solar cell (DSSC) applications. Devices sensitized by the dyes TP and TTP display high power conversion
已经开发了一系列简单的基于吩噻嗪的染料,即TP,EP,TTP,ETP和EEP,其中存在噻吩(T),乙二氧基噻吩(E),它们的二聚体和混合物来调节染料的聚集,用于高效染料敏化太阳能电池(DSSC)应用的电荷重组和染料再生。被染料TP和TTP敏化的器件显示出8.07(J sc = 15.2 mA cm -2,V oc = 0.783 V,填充系数(FF)= 0.679)和7.87%(J sc = 16.1 )的高功率转换效率(PCE)毫安厘米-2,V oc= 0.717V,FF = 0.681);这些进行了模拟AM 1.5太阳光下测定结合的I - / I 3 -氧化还原电对。通过用E单元代替T组,基于EP的DSSC的PCE略低,为7.98%,而短路光电流(J sc)更高,为16.7 mA cm -2。具有E和T的混合物的染料ETP的PCE甚至更低,为5.62%。具体而言,基于染料EEP(具有二聚体E)的细胞的J