The influnce of stainless steel substrate and thinkness of nano-TiO_2 film on dye-sensitizied solar cells

Dye-sensitized solar cells(DSCs) built on sheet metals can also be integrated as flexible cells,which is low cost,broad use and get more and more attention.In this research,DSCs were built on glass or 304 stainless steel substrates,the influence of the thickness of nanoporous titanium dioxide(TiO2) film and substrate on energy conversion efficiencies and the stability of DSCs was investigated.The result showed that glass solar cell got high energy conversion efficiencies and good stability when the thickness of TiO2 film was around 20μm,whereas,the stability of stainless steel solar cell was poor comparatively,especially for the DSCs with stainless steel photoelectrode subtrate.