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Strong Co-Mo Interaction behind Unexpected Physicochemical Properties in SrMo0.9Co0.1O3-δPerovskite
(American Chemical Society, 2021-08)
A novel combined chemical procedure was employed to synthesize a homogeneous SrMo0.9Co0.1O3−δ (SMC) perovskite at lower temperatures (900 °C). The physicochemical properties of SMC were analyzed by means of in situ X-ray ...
La1xCaxAl1yNiyO3 perovskites used as precursors of nickel based catalysts for ethanol steam reforming
(Elsevier, 2015-10-09)
On the search of new design procedures for high performance catalysts we have obtained a very precisely defined surface architecture starting from a particular host structure. In this case, high purity La1xCaxAl1yNiyO3 (x ...
External quantum efficiency measurements used to study the stability of differently deposited perovskite solar cells
(American Institute of Physics, 2020-06)
The instability exhibited by perovskite solar cells when exposed to the environment under illumination is one of the major obstacles for the entry of perovskite technology in the photovoltaic market. In this work, we use ...
Ultrafast all-optical modulation in 2D hybrid perovskites
(American Chemical Society, 2019-07-17)
Two-dimensional (2D) hybrid organic-inorganic Ruddlesden-Popper perovskites (RPPs) have been recently shown to exhibit large nonlinear optical properties due to the strong excitonic effects present in their multiple quantum ...
Direct observation of surface polarization at hybrid perovskite/Au interfaces by dark transient experiments
(American Institute of Physics, 2020-05)
A distinctive feature of hybrid perovskite light-absorbing materials is the non-negligible ionic conductivity influencing photovoltaic performance and stability. Moving ions or vacancies can naturally accumulate at the ...
Dynamic Disorder Restriction of Methylammonium (MA) Groups in Chloride-Doped MAPbBr 3 Hybrid Perovskites: A Neutron Powder Diffraction Study
(Wiley VCH Verlag, 2019-03)
The hybrid methylammonium (MA) lead halide MAPbX 3 perovskites present an appealing optoelectronic behavior with applications in high-efficiency solar cells. The orientation of the organic MA units may play an important ...
Estimation of carrier mobilities and recombination lifetime in halide perovskites films using the moving grating technique
(IOP Publishing, 2020-06)
Pulsed excitation methods followed by time-resolved measurements have been questioned as a valid procedure to deduce transport properties of halide perovskites (HaPs). Measurements of both the majority and minority carrier?s ...
Local structure and magnetic properties of Mn3+–O–Fe3+ superexchange interaction in an oxygen-vacant perovskite: Experimental and theoretical study
(Elsevier Science, 2019-01)
In this work we report an experimental and theoretical study on the local structure and magnetic properties of Mn3+–O–Fe3+ superexchange interaction for an oxygen-vacant perovskite PrBaMnFeO5+ δ with δ ∼ 0.5. Structural ...
Magnetic and optical properties of perovskite-graphene nanocomposites LaFeO3-rGO: Experimental and DFT calculations
(Elsevier Science, 2020-10)
We present an experimental and theoretical study of the perovskite-graphene nanocomposites LaFeO3 – rGO, where we demonstrate a easy way to prepare this compound using citrate auto-compulsion method, starting from corresponding ...
Ternary Ni−Co−Fe exsolved nanoparticles/perovskite system for energy applications: Nanostructure characterization and electrochemical activity
(American Chemical Society, 2020-09)
The exsolution of Ni−Co−Fe from a Sr0.93(Ti0.3Fe0.56Ni0.07Co0.07)O3−δ perovskite (STFNC) is explored as a strategy to produce electrochemically active electrodes for symmetric-SOFC (S-SOFC). It was found that a nanostructured ...