A key point of porphyrin structure affect DSSCs performance based on porphyrin sensitizers

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• 作者：Zhe Zeng ; Bao Zhang ; Chengjie Li ; Xiao Peng ; Xiujun Liu ; Shuxian Meng ; Yaqing Feng
• 关键词：Dye-sensitized solar cells ; Porphyrin structure ; Photovoltaic ; 尾 Position ; Linker ; Sonogashira coupling
• 刊名：Dyes and Pigments
• 出版年：January, 2014
• 年：2014
• 卷：100
• 期：Complete
• 页码：278-285
• 全文大小：1473 K

文摘

Two sets of meso-tetraphenylzincporphyrins have been synthesized via Sonogashira coupling and Knoevenagel condensation. The photophysical and electrochemical measurements have been performed for each dye, and the photovoltaic properties of all porphyrin-based dye-sensitized solar cells (DSSCs) have been evaluated. For different linkers on 尾 position, meso-substituents show different affections for DSSCs' performances. The matching degree of the length of linker and the size of meso-substituent could be a key point in porphyrin structure that affect the cell performance of DSSC based on porphyrin sensitizers. The highest cell performance was achieved with IId as a sensitizer and ethanol as an immersing solvent: a short-circuit photocurrent density of 9.75聽mA聽cm^鈭?, an open-circuit voltage of 0.71聽V, a fill factor of 0.73, and a light to electricity conversion efficiency of 5.08% under the AM 1.5 sunlight.