Phenothiazine-Based D-A-π-A Dyes for Highly Efficient Dye-Sensitized Solar Cells: Effect of Internal Acceptor and Non-Conjugated π-Spacer on Device Performance
作者:Satyawan Nagane、Amol Ichake、Ishita Agrawal、Aditya Sadhanala、Richard H. Friend、Satishchandra Ogale、Prakash P. Wadgaonkar
DOI:10.1002/cplu.201600492
日期:2017.2
other two dyes. The efficiencies achieved with AI-1, AI-2, and AI-3 dyes were 8.5 % (Jsc =15.42 mA cm-2 , Voc =0.78 V, FF=68 %), 7 % (Jsc =12.8 mA cm-2 , Voc =0.78 V, FF=68 %) and 6.7 % (Jsc =11.57 mA cm-2 , Voc =0.82 V, FF=68.26 %), respectively. The incorporation of non-conjugated phenothiazine as a π-spacer in D-A-π-A dyes showed remarkable enhancement in the photovoltaic performance of dye-sensitized
设计并合成了以吩噻嗪为供体(D)和非共轭π-间隔基的三种新型DA-π-A无金属有机染料。结合不同的“内部受体”(电子陷阱),例如苯并噻二唑(BTD),苯并三唑(BTA)和吡啶,可以对能量水平和光物理性质进行系统的调节。与其他两种染料相比,AI-1染料显示出较低的电子紊乱。AI-1,AI-2和AI-3染料获得的效率分别为8.5%(Jsc = 15.42 mA cm-2,Voc = 0.78 V,FF = 68%),7%(Jsc = 12.8 mA cm-2 ,Voc = 0.78V,FF = 68%)和6.7%(Jsc = 11.57mA cm-2,Voc = 0.82V,FF = 68.26%)。非共轭吩噻嗪作为DA-π-A染料中的π-间隔基的掺入显示出染料敏化太阳能电池(DSSC)器件的光伏性能显着提高。具有基于碘化物/三碘化物(I- / I3-)的液体电解质的密封DSSC装置在环境条件下显示出令人满意的稳定性。