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Revolutionizing Perovskite Engineering
Within the Weave initiative, this project promotes bilateral scientific cooperation between CEITEC - Central European Institute of Technology (Brno, Czech Republic) and RBI - Ruđer Bošković Institute (Zagreb, Croatia).
Member organizations:
The Czech Science Foundation (GACR) serves as the Lead Agency.
The Croatian Science Foundation (HRZZ) serves as the Partner agency.
Project start: 1.4.2025.
Project end: 31.3.2028.
Project leaders:
Dr. Martina Vrankić (RBI, Croatia)
Dr. Ladislav Čelko (CEITC, Czech Republic)
HRZZ funding: 197,404.00 EUR
GACR funding: 167,085.00 EUR
Total funding: 364,489.00 EUR
Perovskite-type oxides hold great promise for applications in photovoltaics, catalysis, thermoelectrics, batteries, supercapacitors, and energy storage devices. Their key advantages include tunable phase and chemical composition, diverse microstructures and morphologies, excellent chemical resistance, and exceptional long-term stability—attributes achievable through varied synthesis methods. Understanding material behavior under non-ambient conditions remains essential for advancing device fabrication and longevity
Project Focus
This project investigates the tailored synthesis of M-doped LaCoO₃ perovskites (M = Ni, Cr, Fe, Mn) at low and high doping levels, elucidating their crystallographic and physicochemical properties under non-ambient conditions—critical foundations for device integration. Mechanical responses, particularly to hydrostatic pressure and induced stress, directly influence fabrication feasibility and durability. Synthesis employs two routes: (i) hydrothermal and glycine-nitrate gel combustion and (ii) high-energy ball milling, spray drying, and furnace calcination, yielding varied morphologies and structures, with doping fine-tuning phase stability and crystal characteristics.
Key Investigations
The study examines powder consolidation via additive manufacturing and thermal spraying, assessing impacts on crystal structures and functionalities. Unlike chemical pressure from doping, hydrostatic pressure offers a pristine means to modulate perovskite structures and properties, unlocking phenomena such as bandgap narrowing, extended carrier lifetimes, enhanced photoluminescence, ambient-memorized states, metallization, amorphization, and phase transitions. In situ high-pressure techniques, including X-ray diffraction, Raman and absorption spectroscopy, and electrical resistance measurements up to 50 GPa, will reveal underlying physics, structure-property relationships, and novel features in these materials.
