4 documents found, page 1 of 1
Effect of the Performance of Lignin Into the Matrix of the TiO2 with Applicatio...
Teixeira,Edwalder Silva; Nunes,Vanja Fontenele; Pinho,Diego Caitano; Maia Júnior,Paulo Herbet França; Lima,Francisco MarconeAbstract Founding new materials and structures for solar cells is a challenge in the photovoltaic field. This work evaluated the effect of the lignin in the photovoltaic activity by compounding with TiO2/lignin as photoanode for the dye sensitized solar cells (DSSC’s). Hybrid films (TiO2/lignin) with different concentrations of lignin (5, 10 and 15%) were deposited by spin coating over commercial TiO2 thin film...
Effects of tin on the performance of ZnO photoanode for DSSC
Nunes,Vanja Fontenele; Lima,Francisco Marcone; Teixeira,Edwalder Silva; Maia Júnior,Paulo Herbert França; Almeida,Ana Fabíola LeiteABSTRACT Tin Zinc Oxide thin films were deposited on transparent conductive oxide by chemical bath, at percentages of 5, 10 and 15% of tin (Sn) on the zinc oxide (ZnO) structure. All films were thermally treated to improve its crystallinity. The produced films with tin were characterized by x-ray diffraction and optical measurements, such as absorbance, transmittance and reflectance. The x-ray spectrum showed t...
Building and Testing a Spin Coater for the Deposition of Thin Films on DSSCs
Teixeira,Edwalder Silva; Cavalcanti,Raphael Coelho; Nunes,Vanja Fontenele; Maia Júnior,Paulo Herbet França; Lima,Francisco Marcone; Pinho,Diego CaitanoAbstract A low cost spin coater was constructed in this work for the deposition of thin films of titanium dioxide (TiO2) on conductive substrate of FTO (fluoride doped tin oxide) with application on dye sensitized solar cells. The results showed a 95% precision between the speed values obtained by the software of C#sharp language and the spin values observed directly on the device. The TiO2 films deposited thro...
Use of SnOx:F in the Recycling of Silicon Solar Cells
Lima,Francisco Marcone; Alves,Jean Faber Araújo; Maia Júnior,Paulo Herbert França; Martins,Felipe Mota; Teixeira,Edwalder SilvaAmongst the many parts of a silicon cells photovoltaic module, silicon is the most important and expensive constituent. Thus, research on silicon recycling from damaged cells can lead to economic and environmental benefits. In this work, the broken silicon cells were tailored to function along with the fluorine-doped tin oxide as the transparent electric conductors. The broken silicon cells were analyzed by the...