Abstract

Three types of Pt counter electrodes were prepared on FTO conductive glass respectively by magnetron sputtering, thermal decompositing the precursor of H 2 PtCl 6 ·6H 2 O solution at high temperature and chemical reduction of H 2 PtCl 6 ·6H 2 O solution at low temperature. The Pt loading on FTO glass was adjusted by changing the magnetron sputtering time or the cycles of spin coating and annealing treatment. The crystal structure, surface morphology and light transmittance of Pt counter electrodes prepared by different methods are analyzed. Based on these Pt counter electrodes, a set of dye-sensitized solar cells were assembled with TiO 2 nanotube arrays. The photovoltaic performance of assembled dye-sensitized solar cells under front-side illumination and back-side illumination were measured. The influence of prepared method on the microstructure and morphology of Pt counter electrode, as well as the corresponding photovoltaic performance of assembled cells are investigated. The applicability, advantages and disadvantages of Pt counter electrodes prepared by different methods are also compared and analyzed in this paper.

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