Effects of aromatic π-conjugated bridges on optical and photovoltaic properties of N,N-diphenylhydrazone-based metal-free organic dyes
作者:Ping Shen、Xinping Liu、Shenghui Jiang、Yuanshuai Huang、Ling Yi、Bin Zhao、Songting Tan
DOI:10.1016/j.orgel.2011.08.010
日期:2011.12
spectroscopy, cyclic voltammetry, density functional theory calculations, electrochemical impedance spectra, and photovoltaic measurements were employed to support our proposal. With the addition of 1 mM chenodeoxycholic acid (CDCA) as the coadsorbent, a maximum power conversion efficiency of a DSSC based on HP was 7.74% (Jsc = 16.17 mA/cm2, Voc = 0.69 V, FF = 0.694) under simulated AM 1.5 G solar irradiation
一系列新颖的D-π-Adye染料(HB,HP,HF和HT),包含N,N-二苯基hydr供体和通过不同的芳族桥(苯,吡咯,呋喃和噻吩)连接的2-氰基乙酸受体已设计并合成了芳烃桥,以评估敏化的TiO 2太阳能电池的光物理,电化学和光伏特性。每种-基染料都表现出不同的吸附行为,前沿的分子轨道和光伏性能,具体取决于芳族π共轭桥的身份。特别是HP增感TiO2个太阳能电池的光电流,光电压和功率转换效率明显高于其他三种染料。我们解释说,这些结果源于光捕获能力,不同芳族桥的电荷复合率和电子寿命。光谱学,循环伏安法,密度泛函理论计算,电化学阻抗谱和光伏测量被用来支持我们的建议。通过添加1 mM鹅去氧胆酸(CDCA)作为共吸附剂,基于HP的DSSC的最大功率转换效率为7.74%(J sc = 16.17 mA / cm 2,V oc 在模拟的AM 1.5 G太阳辐射下(100 mW / cm 2)= 0.69