Optimization The Efficiency Photovoltaic Solar Cell Using Semiconductor Nanomaterials, graphene and natural dyes.
| Reference | Presenter | Authors (Institution) | Abstract |
|---|---|---|---|
| 06-142 | Vanessa Lacerda Menezes | Hidalgo, M.d.(University of Brasilia); Martins, I.L.(Universidade de Brasília); Brito, R.(Universidade de Brasília); Silveira, L.(Universidade de Brasilia); Gomes, T.(Universidade de Brasília); Menezes, V.L.(Universidade de Brasília); | Currently, the challenge in manufacturing the solar cells devices is to increase efficiency and production costs. The factors that affect these characteristics are: deposited nanocrystalline oxide layer, absorption in the dye used, as well as the type of substrate involved in the assembly [1, 2].
The present work contemplates these challenges, as well as: Semiconductor nanoparticles (NPs) SnO2-F 5% and NPs TiO2 were synthesized by Pechini Method [3]. Thin films of SnO2-F 5% were deposited on glass substrates by pyrolysis spray technique and analyzed by UV-Vis. spectroscopy, spectra of results showed higher transmission (>80%) in the range of 300-750 nm. These values were similar as obtained by commercial ITO deposited on glass slides. For the conformation of the cells, substrates of glass with geometry of 2.2 cm² were used for formation of anode semiconductors with NPS of SnO2-F 5% and TiO2/Graphene/Chlorophyll. The cathode was used Glass /SnO2-F 5% and electrolyte solution of I-/IO3-. The better results in these cells were obtained using DMSO as organic solvent (635 mV) in comparison as obtained with EtOH solvent (565 nm). Tests using solar simulator showed that the behavior these cells had electrical characteristics of diode and good performance. References: [1] Smith, G., Granqvist, C.G., Green Nanotechnology. CRC Press, USA, 2010, p.147. [2] FALLA, P. H.; at. el. Optimization the Efficiency Photovoltaic Solar Cells Using Synthesized TiO2 Semiconductor Nanomaterials and Functionalized Carbon Nanotubes. Energy Procedia, v. 57, p. 1860-1867, 2014. [3] M. Pecchini, US Patent No 3330697,1967.
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