Synthesis and Characterization of Organic Dyes with Various Electron-Accepting Substituents for p-Type Dye-Sensitized Solar Cells
作者:Martin Weidelener、Satvasheel Powar、Hannelore Kast、Ze Yu、Pablo P. Boix、Chen Li、Klaus Müllen、Thomas Geiger、Simon Kuster、Frank Nüesch、Udo Bach、Amaresh Mishra、Peter Bäuerle
DOI:10.1002/asia.201402654
日期:2014.11
the dyes were determined from cyclic voltammetry measurements and evaluated concerning their potential use as sensitizers in p‐type dye‐sensitized solar cells (p‐DSCs). Quantum‐chemical density functional theory calculations gave further insight into the frontier orbital distributions, which are relevant for the electronic processes in p‐DSCs. In p‐DSCs using an iodide/triiodide‐based electrolyte, the
合成了四种新的受体基团不同的供体-π-受体染料,并将其用作模型系统来研究受体基团对基于NiO的p型染料敏化太阳能电池的光物理性质的影响。UV / Vis吸收光谱显示出广泛的吸收范围,最大值介于331和653 nm之间。通过循环伏安法测量确定染料的氧化还原电势以及HOMO和LUMO能量,并评估其在p型染料敏化太阳能电池(p-DSC)中作为敏化剂的潜在用途。量子化学密度泛函理论计算提供了对前沿轨道分布的进一步了解,这些前沿轨道分布与p-DSC中的电子过程有关。在使用基于碘化物/三碘化物的电解质的p-DSC中,多环9,10-二氰基‐ [1,2-b ]含喹喔啉(DCANQ)受体的染料具有0.08%的最高功率转换效率,这与含per一酰亚胺(PMI)的染料所获得的功率转换效率相当。有趣的是,包含基于DCANQ的染料的设备可实现更高的V OC163 mV,而含PMI的染料为158 mV。阻抗谱分析进一步