Synthesis of conjugated reduced graphene oxide-polythiophene derivatives for application as HTM in perovskite solar cells

• Grant number: 17/07627-0
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• Start date: December 01, 2017
• End date: September 30, 2020
• Field of knowledge: Engineering - Materials and Metallurgical Engineering - Nonmetallic Materials
• 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
• Associated research grant: 13/07296-2 - CDMF - Center for the Development of Functional Materials, AP.CEPID
• Associated scholarship(s): 18/02084-0 - Application of conjugated reduced graphene oxide-polythiophene derivatives as HTM in perovskite solar cells, BE.EP.PD

Abstract

In order to supply the growing demand of electricity consumption of the last decades, the use of renewable energies, such as photovoltaic cells - solar cells (SC) - have emerged as promising way to clean, renewable and efficient energy to reduce the use of fossil fuels, non-renewable and polluting. Brazil, for its location and territorial extension, receives solar energy of about 1013 MWh per year, which corresponds to approximately 50,000 times the annual electricity consumption. Thus, the development of devices that convert sunlight into electricity using efficient, low-cost and new materials have arised interest in the international scientific community. In this context, the perovskite solar cells have shown increasing efficiency values. Hence, the synthesis of novel compounds is a crucial tool to promote structural modifications and improve their properties, aiming to increase efficiency of energy conversion. The most common material used as hole transport in this kind of device, the spiro-O-MeTAD, has been presented as a bottleneck to develop cheap and stable devices, since it has commercial value ten times higher than Au and Pt, and is unstable to atmospheric oxygen. Thus, in this project we propose to perform the synthesis of donor-À-acceptor anchoring groups covalently bonded to compounds derived from carbon conductors such as graphene films and powders for use as hole transport material (HTM) in perovskite devices. These new compounds will be structurally, electrically and photochemically analyzed. Assembly and characterization of devices is expected to be made in a period abroad (BEPE) in collaboration with Prof. Alan Sellinger's group at the Colorado School of Mines (CSM). It is also intended to study the effect of the structural changes made to the molecule in relation to different types of ligands and its substituents in specific positions to observe responses in the ratio and yield of the products formed in the reaction times and performance of the devices. In addition, the synthesized molecules will be also tested to verify potential applications in other organic electronic devices.

Scientific publications

(5)

(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)

BREGADIOLLI, BRUNA ANDRESSA; PAULIN, JOAO VITOR; ALBANO, LUIZ GUSTAVO SIMAO; MARTINS, LUCAS MICHELAO; DE CAMARGO, DAVI HENRIQUE STARNINI; DA SILVA-FILHO, LUIZ CARLOS; BUFON, CARLOS CESAR BOF; GRAEFF, CARLOS FREDERICO DE OLIVEIRA. A strategy towards melanin-based functional material: rGO and sulfonated melanin composites. JOURNAL OF MATERIALS CHEMISTRY C, v. 9, n. 47, NOV 2021. (17/07627-0, 18/09235-4, 13/07296-2, 14/25979-2, 17/25553-3, 15/23000-1)

PAULIN, JOAO V.; ALBANO, LUIZ G. S.; CAMARGO, DAVI H. S.; PEREIRA, MARIANE P.; BREGADIOLLI, BRUNA A.; GRAEFF, CARLOS F. O.; BUFON, CARLOS C. B.. Eumelanin-based multisensory platform: A case of study for photolithographic patterning. APPLIED MATERIALS TODAY, v. 28, p. 9-pg., 2022-08-01. (20/15869-6, 17/07627-0, 14/25979-2, 17/02317-2, 17/25553-3)

MARTINS, LUCAS MICHELAO; BREGADIOLLI, BRUNA ANDRESSA; AUGUSTO, LAIS CRISTINA; LAZARO DE CARVALHO, JOSE HENRIQUE; ZAGHETE, MARIA APARECIDA; DA SILVA FILHO, LUIZ CARLOS. Synthesis of Novel 1,4-dihydro-1,2,4,5-tetraarylpyrrolo[3,2-b]pyrroles Derivatives Catalyzed by NbCl5 and Application in Dye Sensitized Solar Cells. MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS, v. 24, n. 1, 2021. (16/01599-1, 18/14506-7, 18/09235-4, 17/07627-0)

DOS SANTOS, GIOVANNY CARVALHO; MARTINS, LUCAS MICHELAO; BREGADIOLLI, BRUNA ANDRESSA; MORENO, VITOR FERNANDES; DA SILVA-FILHO, LUIZ CARLOS; SACOMAN TORQUATO DA SILVA, BRUNO HENRIQUE. Heterocyclic compounds as antiviral drugs: Synthesis, structure-activity relationship and traditional applications. Journal of Heterocyclic Chemistry, v. 58, n. 12, AUG 2021. (18/14506-7, 18/09235-4, 17/07627-0)

PAULIN, JOAO V.; PEREIRA, MARIANE P.; BREGADIOLLI, BRUNA A.; CACHANESKI-LOPES, JOAO P.; GRAEFF, CARLOS F. O.; BATAGIN-NETO, AUGUSTO; BUFON, CARLOS C. B.. Controlling ions and electrons in aqueous solution: an alternative point of view of the charge-transport behavior of eumelanin-inspired material. JOURNAL OF MATERIALS CHEMISTRY C, v. 11, n. 18, p. 12-pg., 2023-04-17. (17/02317-2, 17/07627-0, 14/50906-9, 20/15869-6, 14/25979-2)