Perovskite solar cells (PSCs) are among the most promising emerging photovoltaic technologies, with certified power conversion efficiencies exceeding 28% in small-area devices (< 0.1 cm2). Despite this remarkable progress, scaling up PSCs from laboratory-scale devices to large-area devices and modules remains a major challenge. Issues such as nonuniform film deposition and increased ohmic losses due to the higher sheet resistance of large-area transparent conductive oxide (TCO) substrates may limit device performance and scalability. In this context, metallic grids have attracted attention as a strategy to improve current collection and reduce resistive losses in large-area devices. This talk will present recent results on the development and stability of Ni-P and Ni-Cu metallic films for PSC applications. The influence of processing steps commonly employed during n-i-p PSC fabrication, including solvent cleaning, UV-ozone treatment, thermal annealing, and direct contact with electron transport (ETL) and perovskite layers, will be discussed. Particular attention will be given to the effects of these processes on the chemical, morphological, and electrical properties of the metallic films, with the aim of identifying the most promising compositions for use as metallic grids in large-area PSCs.

Speaker:

Andreia de Morais received her B.Sc. degree in Chemistry with Technological Attributions from the Federal University of Alfenas (UNIFAL-MG), Brazil, in 2008, and her M.Sc. degree in Chemistry from the same institution in 2010. She earned her Ph.D. in Sciences from the Institute of Chemistry at the University of Campinas (IQ-Unicamp), Brazil, in 2015. She is currently a postdoctoral researcher at the Renato Archer Information Technology Center (CTI Renato Archer) in Campinas, SP, Brazil, where her research focuses on developing metallic grids for large-area perovskite solar cells. Throughout her academic career, she has conducted research on electrochemical sensors, dye-sensitized solar cells, organic solar cells, organic light-emitting diodes, and perovskite solar cells. Her expertise includes the synthesis of nanostructured materials, interface engineering, electrochemical characterization, and the fabrication and characterization of optoelectronic devices.