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Hybrid solar cell based on TiO2 nanoparticles

Grant number: 11/02205-3
Support Opportunities:Scholarships in Brazil - Doctorate (Direct)
Effective date (Start): October 01, 2011
Effective date (End): September 30, 2016
Field of knowledge:Physical Sciences and Mathematics - Physics - Condensed Matter Physics
Principal Investigator:Carlos Frederico de Oliveira Graeff
Grantee:Bruna Andressa Bregadiolli
Host Institution: Faculdade de Ciências (FC). Universidade Estadual Paulista (UNESP). Campus de Bauru. Bauru , SP, Brazil

Abstract

This project regards the fabrication and study of hybrid and Grätzel solar cells based on nanostructured TiO2 films. Special attention will be given to structural and optical properties of TiO2 films and TiO2/P3HT and TiO2/N3 interfaces. The nanostructured TiO2 thin films will be synthesized by hydrothermal technique. The basic characterization of these films will be made through of X-ray diffraction, scanning electron microscopy, UV-Vis-NIR spectrophotometry and spectrofluorimetry. The interface degradation will be monitored through the fluorescence spectra and absorbance in the UV-Vis-NIR region. The results obtained in interface studies will be then used to assemble the photovoltaic devices aiming to increase its energy conversion efficiency. The basic characterization of the devices will be carried out by photo-current and current versus applied voltage measurements in dark and under controlled lighting. Impedance spectroscopy combined to Electrically Detected Magnetic Resonance (EDMR) will be used to investigate the carrier transport processes, which are important to obtain a fast optimization route of the studied devices. (AU)

News published in Agência FAPESP Newsletter about the scholarship:
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Scientific publications (8)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
SILVA, HUGO SANTOS; RAMANITRA, HASINA H.; BREGADIOLLI, BRUNA A.; BEGUE, DIDIER; GRAEFF, CARLOS F. O.; DAGRON-LARTIGAU, CHRISTINE; PEISERT, HEIKO; CHASSE, THOMAS; HIORNS, ROGER C.. Oligo- and Poly(fullerene)s for Photovoltaic Applications: Modeled Electronic Behaviors and Synthesis. JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY, v. 55, n. 8, p. 1345-1355, . (11/02205-3)
SILVA, HUGO SANTOS; RAMANITRA, HASINA H.; BREGADIOLLI, BRUNA A.; TOURNEBIZE, AURELIEN; BEGUE, DIDIER; DOWLAND, SIMON A.; LARTIGAU-DAGRON, CHRISTINE; GRAEFF, CARLOS F. O.; DISTLER, ANDREAS; PEISERT, HEIKO; et al. In Situ Generation of Fullerene from a Poly(fullerene). JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, v. 57, n. 21, p. 1434-1452, . (11/02205-3)
BREGADIOLLI, BRUNA ANDRESSA; FERNANDES, SILVIA LETICIA; DE OLIVEIRA GRAEFF, CARLOS FREDERICO. Easy and Fast Preparation of TiO2 - based Nanostructures Using Microwave Assisted Hydrothermal Synthesis. MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS, v. 20, n. 4, p. 912-919, . (11/02205-3, 13/07296-2)
RAMANITRA, HASINA H.; DOWLAND, SIMON A.; BREGADIOLLI, BRUNA A.; SALVADOR, MICHAEL; SILVA, HUGO SANTOS; BEGUE, DIDIER; GRAEFF, CARLOS F. O.; PEISERT, HEIKO; CHASSE, THOMAS; RAJOELSON, SAMBATRA; et al. Increased thermal stabilization of polymer photovoltaic cells with oligomeric PCBM. JOURNAL OF MATERIALS CHEMISTRY C, v. 4, n. 34, p. 8121-8129, . (11/02205-3)
RAMANITRA, HASINA H.; SILVA, HUGO SANTOS; BREGADIOLLI, BRUNA A.; KHOUKH, ABDEL; COMBE, CRAIG M. S.; DOWLAND, SIMON A.; BEGUE, DIDIER; GRAEFF, CARLOS F. O.; DAGRON-LARTIGAU, CHRISTINE; DISTLER, ANDREAS; et al. Synthesis of Main-Chain Poly(fullerene)s from a Sterically Controlled Azomethine Ylide Cycloaddition Polymerization. MACROMOLECULES, v. 49, n. 5, p. 1681-1691, . (11/02205-3)
SACOMAN TORQUATO DA SILVA, BRUNO HENRIQUE; BREGADIOLLI, BRUNA ANDRESSA; DE OLIVEIRA GRAEFF, CARLOS FREDERICO; DA SILVA-FILHO, LUIZ CARLOS. NbCl5-Promoted Synthesis of Fluorescein Dye Derivatives: Spectroscopic and Spectrometric Characterization and Their Application in Dye-Sensitized Solar Cells. CHEMPLUSCHEM, v. 82, n. 2, p. 261-269, . (14/01337-1, 11/02205-3, 16/01599-1)
BREGADIOLLI, BRUNA A.; RAMANITRA, HASINA H.; FERREIRA, RODRIGO MARQUES; CORCOLES, LAURA; GOMES, MILTON S.; KANG, LAUREN; COMBE, CRAIG M. S.; SILVA, HUGO SANTOS; LAVARDA, FRANCISCO C.; BEGUE, DIDIER; et al. Towards the synthesis of poly(azafulleroid)s: main chain fullerene oligomers for organic photovoltaic devices. Polymer International, v. 66, n. 10, p. 1364-1371, . (11/02205-3)
BREGADIOLLI, BRUNA ANDRESSA; FERNANDES, SILVIA LETICIA; DE OLIVEIRA GRAEFF, CARLOS FREDERICO. Easy and Fast Preparation of TiO2 - based Nanostructures Using Microwave Assisted Hydrothermal Synthesis. MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS, v. 20, n. 4, p. 8-pg., . (13/07296-2, 11/02205-3)
Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
BREGADIOLLI, Bruna Andressa. Study and development of materials for applications in hybrid solar cells. 2016. Doctoral Thesis - Universidade Estadual Paulista (Unesp). Faculdade de Ciências. Bauru Bauru.

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