Solar Cells Sensitized With Natural Dyes: An Introductory Experiment About Solar Energy For Undergraduate Students

dc.creatorSonai
dc.creatorGabriela G.; Melo
dc.creatorMauricio A.
dc.creatorJr.; Nunes
dc.creatorJulia H. B.; Megiatto
dc.creatorJackson D.
dc.creatorJr.; Nogueira
dc.creatorAna F.
dc.date2015-DEC
dc.date2016-06-07T13:35:43Z
dc.date2016-06-07T13:35:43Z
dc.date.accessioned2018-03-29T01:51:13Z
dc.date.available2018-03-29T01:51:13Z
dc.identifier
dc.identifierSolar Cells Sensitized With Natural Dyes: An Introductory Experiment About Solar Energy For Undergraduate Students. Soc Brasileira Quimica, v. 38, p. 1357-1365 DEC-2015.
dc.identifier0100-4042
dc.identifierWOS:000367255200016
dc.identifier10.5935/0100-4042.20150148
dc.identifierhttp://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422015001001357&lng=en&nrm=iso&tlng=en
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/244180
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1307878
dc.descriptionAn interesting practical experiment about the preparation of dye-sensitized solar cells (DSSC) using natural dyes were carried out by the undergraduate students in the chemistry course at UNICAMP. Natural dyes were extracted from blueberries (Vaccinium myrtillus L.), jabuticabas (Myrciaria cauliflora), raw and cooked beets (Beta vulgaris L.), and annattos (Bixa orellana L.), which were used to sensitize TiO2 films that composed the photoanode in the DSSC. A polymer electrolyte containing an iodide/triiodide redox couple was used in lieu of the use of liquid solutions to prevent any leakage in the devices. A maximum solar-to-electric energy conversion of 0.26 +/- 0.02% was obtained for the solar cell prepared with annatto extracts. This experiment was an effective way to illustrate to the undergraduate students how to apply some of the chemical concepts that they learned during their chemistry course to produce electric energy from a clean and renewable energy source. Teachers could also exploit the basics of the electronic transitions in inorganic and organic compounds (e.g., metal-to-ligand charge transfer and pi-pi* transitions), thermodynamics (e.g., Gibbs free energy), acid-base reactions in the oxide solid surface and electrolyte, and band theory (i.e., the importance of the Fermi level energy).
dc.description38
dc.description10
dc.description
dc.description1357
dc.description1365
dc.description
dc.description
dc.description
dc.languagept
dc.publisherSOC BRASILEIRA QUIMICA
dc.publisher
dc.publisherSAO PAULO
dc.relationQUIMICA NOVA
dc.rightsfechado
dc.sourceWOS
dc.subjectUltrafast Electron Injection
dc.subjectConversion Efficiency
dc.subjectBetalain Pigments
dc.subjectAnthocyanins
dc.subjectPhotosensitizers
dc.subjectPerformance
dc.subjectAbsorption
dc.subjectMorphology
dc.subjectAnatase
dc.subjectRutile
dc.titleSolar Cells Sensitized With Natural Dyes: An Introductory Experiment About Solar Energy For Undergraduate Students
dc.typeArtículos de revistas


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