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Effect of the compact Ti layer on the efficiency of dye-sensitized solar cells assembled using stainless steel sheets

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Resumo:Titanium films have been deposited on stainless steel metal sheets using dc magnetron sputtering technique at different substrate temperatures. The structure of the titanium films strongly depend on the substrate temperature. The titanium film deposited at the substrate temperature lower than 300 ºC has a loose flat sheet grains structure and the titanium film prepared at the substrate temperature higher than 500 ºC has a dense nubby grains structure. The DSSC assembled using stainless steel sheet coated with titanium film deposited at high substrate temperature has a low charge transfer resistance in the TiO2/Ti interface and results in a high conversion efficiency. The DSSC assembled using stainless steel sheet coated with titanium film deposited at temperature higher than 500 ºC has higher conversion efficiency than that assembled using titanium metal sheet as the substrate. The maximum conversion efficiency, 2.26% is obtained for DSSC assembled using stainless steel sheet coated with titanium film deposited at 700 ºC substrate temperature, which is about 70% of the conversion efficiency of the FTO reference cell used in this study.
Autores principais:Lijian Meng
Outros Autores:Mingxing Wu; Yongmei Wang; Wei Guo; Chunyu Ma; Tingli Ma; Silva, Rui
Assunto:Dye-sensitized solar cell DSSC Titanium Stainless steel Flexible Impedance spectroscopy
Ano:2013
País:Portugal
Tipo de documento:artigo
Tipo de acesso:acesso aberto
Instituição associada:Universidade do Minho
Idioma:inglês
Origem:RepositóriUM - Universidade do Minho

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