Experimental synthesis of double perovskite functional nano-ceramic Eu2NiMnO6: Combining optical characterization and DFT calculations

Synthesis, Structural Characterization, and Infrared Analysis of Double Perovskites Pr2NiMnO6, Gd2NiMnO6, and Er2NiMnO6 Functional Nano-Ceramics

“…The strongest one has the maximum of the absorption (minimum of transmission) centered at approximately 590–600 cm −1 and the other band has it centered at 440–470 cm −1 . The frequency of the strongest absorption is in the same range that the IR absorption reported for Eu 2 NiMnO 6 [ 35 ] and La 2 NiMnO 6 [ 36 ]. A frequency outside the 590–600 cm −1 range was only reported for Sm 2 NiMnO 6 [ 37 ], 575 cm −1 ; probably, this frequency has been underestimated.…”

“…of modes ν1 and ν2, atomic number of the lanthanide atom, and ionic radii. The frequencies for Eu2NiMnO6, La2NiMnO6, and Sm2NiMnO6 were taken from the literature[35][36][37].CompoundZ Ionic Radii (Å) ν1 (cm −1 ) ν2 (cm −1 )…”

First principle insights on optoelectronic, mechanical, and thermoelectric properties of double perovskites Li2ScAu (Br/I)6 for energy harvesting applications

“…These DPs have been extensively explored for renewable energy in the last few decades [1]. The replacement of organic-based and toxic natured perovskites MAPbI 3 (MA = methylammonium) with lead-free inorganic double perovskite Cs 2 AgBiBr 6 increases the interest of the scientific community to explore them for solar cells and thermoelectric application [2][3][4][5]. The power conversion efficiency (PCE) of MAPbI 3 was recorded at 3.8% in 2009, which increased to 25.2% in 2019 due to the utmost efforts of the scientists [6][7][8].…”