Fabrication of solid-state dye-sensitized TiO2 solar cells combined with polypyrrole

摘要

A solid-state solar cell was fabricated by photoelectrochemical polymerization of pyrrole on porous nanocrystalline TiO2 electrode sensitized by the Gratzel dye, cis-di(thiocyanato)-N,N'-bis(2,2'-bipyridyl-4,4'-dicarboxylic acid)-ruthenium (II) dihydrate, RuL2(NCS)(2)), or a newly synthesized cis-Ru(dcb)(2)(pmp)(2) (pmp = 3-(pyrrole-1-ylmethyl)-pyridine). Polypyrrole successfully worked as a hole-transport layer with improvement of the cell characteristics when the TiO2 cell with cis-Ru(dcb)(2)(pmp)(2) was compared with the similarly fabricated cells using RuL2(NCS)(2). The improvement by using Ru(dcb)(2)(pmp)(2) can be explained as due to direct molecular wiring of the polymer-chain to the excited metal center of the complex. (C) 1998 Elsevier Science B.V. All rights reserved. References: 19