Mistura entre corantes naturais sensibilizadores de nanopartículas de TiO2 para aplicação em sistema fotovoltaico

Abstract

Technologies that is directed to the area of renewable energy such as photovoltaic solar cells has been a subject widely discussed in recent years due to irreparable environmental impacts that the indiscriminate use of sources of traditional energy sources like coal, natural gas and oil has caused. The conversion of solar energy into electrical energy, using photovoltaic solar cells has been accomplished largely by bonding P and N type semiconductor devices. However, there has been some modifications regarding the use of materials for the development of other cell types, among these changes can be highlighted using fotoexcitáveis sensitizers that are known dyes. In this work the extracted natural sensitizers are used as (B) Beet, (J) Jambul and (M) Blueberry at concentrations of 1: 1: 1, 1: 0: 1, 0: 1: 1 and 1: 1: 0 respectively in volume, to raise sensitization nanoporous TiO2 electrode type solar cells dye sensitized solar cell (DSSC), investigating, and the interaction between these dyes by (ƞ) photoconversion efficiency of solar radiation into electricity. All cells presented constructed minimum and maximum conversion (ƞ) efficiency of 1.61% to 2.11% for the (J) Jambul and (B) Beet, respectively, still no mixing showed superior performance to the natural colorant (B) Beet. There was only chemical synergism in the mixture (J + M) jambul and Blueberry with 1.85% conversion efficiency is numerically greater than the conversion efficiency of the (J) jambul 1.61% and (M) Blueberry 1.76 %.