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From small to large-area: a systematic study for the scale-up of perovskite solar cells

Grant number: 20/14451-8
Support type:Scholarships in Brazil - Post-Doctorate
Effective date (Start): May 01, 2021
Effective date (End): April 30, 2023
Field of knowledge:Physical Sciences and Mathematics - Chemistry - Physical-Chemistry
Principal researcher:Ana Flávia Nogueira
Grantee:Francineide Lopes de Araújo
Home Institution: Instituto de Química (IQ). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil
Associated research grant:17/11986-5 - Research Division 1 - dense energy carriers, AP.PCPE


Hybrid organic-inorganic perovskites have attracted great interest in the field of photovoltaic technology due to their excellent optoelectronic properties, and low-temperature processability. In just a few years, Perovskite Solar Cells (PSCs) reached a Power Conversion Efficiency (PCE) of over 25%. Despite great advances in terms of efficiency, there are still challenges that need to be overcome for these devices to become affordable in the photovoltaic market. Among them, we can mention obtaining high performance and better stability in environmental conditions, especially on large-area PSCs (active area > 1 cm2). In this context, this project proposes a study of the influence of passivating materials on the perovskite/HTL interface in large-area PSCs assembled with scalable methods, such as blade coating and spray-pyrolisis. It is expected that the interfacial modifications (perovskite/HTL) lead to an improvement in the optoelectronic properties in the large area PSCs, both in terms of performance and stability. Besides that, we will study the structural and physical phenomena related to the charge recombination processes that occur at the perovskite/HTL interface according to the increase of the active area. Moreover, aiming at manufacturing low-cost large-area PSC, we will replace the gold counter electrode with Carbon-based Materials (CMs), in collaboration with MGgraphene. The correlation between the structural and optical properties of the layers of the PSCs will be investigted with Scanning Electron Microscopy (SEM), Atomic Force Microscopy (AFM), X-Ray Diffraction (XRD), X-ray Photoelectron Spectroscopy (XPS), UV-Vis spectroscopy, photoluminescence spectroscopy (PL), time-resolved photoluminescence, and Hall Effect (HE). The electrical characterization of photovoltaic devices will be performed by current by voltage (J-V) measurements, in the dark and under illumination. This project was designed to gain knowledge both from the scientific perspective, with significant contributions on the understanding of fundamentals at interfacial phenomena, and from the technological perspective, providing insights into the use of lower-cost and scalable materials and processes, as one of the activities of the Center for Innovation on New Energies (CINE). (AU)

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Scientific publications
(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)
MARCHEZI, PAULO ERNESTO; DE ARAUJO, FRANCINEIDE LOPES; SZOSTACK, RODRIGO; GERMINO, JOSE CARLOS; THEREZIO, ERALCI M.; MARLETTA, ALEXANDRE; NOGUEIRA, ANA FLAVIA. Reduced graphene oxide in perovskite solar cells: the influence on film formation, photophysics, performance, and stability. JOURNAL OF MATERIALS CHEMISTRY C, v. 9, n. 41 JUN 2021. Web of Science Citations: 1.

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