Structure and Properties of Mixed‐valence Compound Eu₅Zr₃S₁₂

Europium and Acetate Co‐doping Strategy for Developing Stable and Efficient CsPbI2Br Perovskite Solar Cells

“…The peaks were slightly shifted to higher 2θ values with the incorporation of Eu(Ac) 3 , indicating the contraction of crystalline lattice. The partial replacement of Pb 2+ (119 pm) by smaller Eu 3+ (95 pm) and I – (220 pm) by smaller Ac – (162 pm) increases the tolerance factor of CsPbI 2 Br perovskite, which facilitates the formation of a stable α‐phase CsPbI 2 Br perovskite …”

A Eu 3+ -Eu 2+ ion redox shuttle imparts operational durability to Pb-I perovskite solar cells

“…Given the similar radius of Eu 2+ [117 pm (46)] and Pb 2+ (119 pm), however, we cannot confidently rule out the possibility that Eu 2+ replaces Pb 2+ at B site, wherein direct evidence is expected. In addition, europium-iodine-based organic-inorganic perovskite (47) and lanthanide ions doped CsPbX 3 perovskite nanocrystals were found in previous reports (48).…”

Structural, optical, and magnetic properties of Na8Eu2(Si2S6)2 and Na8Eu2(Ge2S6)2: Europium(II) quaternary chalcogenides that contain an ethane-like (Si2S6)6− or (Ge2S6)6− moiety

“…Additional observed isomer shifts for similar compounds are given in Table S1. The compounds selected for Table 4 are the binary europium sulfides [38,39], α-Eu 2 GeS 4 [40], which, except for the sodium cation, contains the same elements as 2, Na 1.55 EuGeS 4 [27], which contains the same elements as 2, and two selenides [41,42], which exhibit the least negative and the most negative isomer shifts of the ternary sulfides and selenides [43][44][45][46]. It is clear that all the sulfides and selenides exhibit isomer shifts, relative to EuF 3 , of between À 11.56 and À12.69 mm/s, isomer shifts that are more negative than those observed at ca.…”