Organic dyes incorporating N-functionalized pyrrole as conjugated bridge for dye-sensitized solar cells: convenient synthesis, additional withdrawing group on the π- …

H Li, L Yang, R Tang, Y Hou, Y Yang, H Wang, H Han…

Index: Li, Huiyang; Yang, Luying; Tang, Runli; Hou, Yingqin; Yang, Yizhou; Wang, Heng; Han, Hongwei; Qin, Jingui; Li, Qianqian; Li, Zhen Dyes and Pigments, 2013 , vol. 99, # 3 p. 863 - 870

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Citation Number: 15

Abstract

Abstract Two new N-functionalized pyrrole-based organic dyes were designed and synthesized for dye-sensitized solar cells. In addition to the normal acceptor of cyanoacetic acid moieties, another electron-withdrawing group, pentafluorophenyl or cyanophenyl one, was linked to the nitrogen atom of the pyrrole ring, with the aim to both suppress the aggregation of the dyes on the TiO 2 surface and expand the electronic absorption spectra ...