含对硝基苯受体纯有机光敏染料的合成及性能

Synthesis of Organic Sensitizers with 4-Nitrobenzene in Electron Acceptors and Their Performance Research

摘要:

设计合成了两个以对硝基苯为受体的纯有机光敏染料（2Z,4E)-5-（4-（二苯基氨基）苯基）-4-（4-硝基苯基）-2-氰基戊-2,4-二烯酸 (S-TPNC) 和 （2Z，4E）-5-（4-（（E）-4-（二苯基氨基）苯乙烯基）苯基）-4-（4-硝基苯基）-2-氰基戊-2,4 -二烯酸 (L-TPNC)，并用HRMS 、1H–NMR 及13C–NMR对其结构进行了表征。研究了这两个染料的光物理和电化学性质，并将其应用于染料敏化太阳能电池 (DSSCs) 的制作中。在 100 mW/cm2 (AM 1.5) 模拟太阳光的照射下，由染料L-TPNC所制作的敏化太阳能电池的光电转化效率为1.59 %；开路电压(Voc)、短路电流密度(Jsc)、填充因子(FF)分别为0.65 V、3.49 mA/cm2 和0.70。而在同等条件下，由染料 S-TPNC 所制作的染料敏化电池光电转化效率为1.23 %。

Abstract:

In this paper, two novel organic dyes with 4-nitrobenzene in electron acceptor were designed and synthesized as sensitizers for dye sensitized solar cells (DSSCs). The dyes were characterized by mass spectrometry (MS), proton nuclear magnetic resonance spectrometry (1H–NMR), and carbon nuclear magnetic resonance spectrometry (13C–NMR). The photophysical and electrochemical properties of the dyes were studied. Dye L-TPNC achieved a higher light to electricity conversion efficiency (η) of 1.59% (open-circuit photovoltage Voc = 0.65 V, short-circuit photocurrent density Jsc = 3.49 mA/cm2 and fill factor FF= 0.70) under 100 mW/cm2 (AM 1.5G), and the efficiency of DSSCs based on S-TPNC reached 1.23%.