Optical absorption by design in a ferroelectric: co-doping in BaTiO₃

Abstract

Co-doping BaTiO3 with (X3+, Y5+) transition metal ions improves its optical absorption properties while retaining good ferroelectricity.

Photoluminescence and structural phase transition relationship in Er-doped BaTiO3 model ferroelectric system

“…1b), a distinctive feature emerges: the phonon band at 307 cm À1 , corresponding to the B1 and E(TO + LO) vibration modes, representative of tetragonality strength, exhibits broadening in Er-BTO compared to pure BTO. 26 This 307 cm À1 band is broader in the case of Er-BTO compared to pure BTO with an FWHM of 9 cm À1 , while it is 7 cm À1 in pure BTO. It is worth mentioning that the width of the Raman bands is associated with the lifetime of the related phonon.…”

A novel zero-dimensional organic–inorganic hybrid ferroelectric material

“…[20][21][22][23] The wealth of features presented by 0D organic-inorganic hybrid materials underlines their substantial potential in advancing the frontier of optoelectronic applications. [24][25][26][27] As research on 0D perovskites continues to advance, various synthesis methods have been explored, including single-crystal growth, colloidal synthesis, and thin-film deposition. [28][29][30] In this instance, we devised a novel organic-inorganic 0D hybrid material, (2-methylimidazole) 2 CdBr 4 , through the saturated solution evaporation method.…”

“…20–23 The wealth of features presented by 0D organic–inorganic hybrid materials underlines their substantial potential in advancing the frontier of optoelectronic applications. 24–27…”

A Strategy to Enhance the Ferroelectric Behavior of MOF-802(Hf) via Doping Zr4+ Ions

“…Metal ion doping can lead to lattice distortion and local charge asymmetrical distribution, which increases the polarizability of the whole structure and further improves the opportunity of enhancing and tailoring the ferroelectric properties. It is noteworthy that the strategy of doping metal ions into the lattice nodes has been achieved in perovskite ferroelectrics and MOF ferroelectrics. − The Mn-doped 2D perovskite (CPA) 2 Pb 1– x Mn x Br 4 ( x = 0.3, 0.4, and 0.5; CPA = cyclopropylammonium) not only exhibited fascinating luminescence of blue light, pink light, and orange light but also presented great dielectric behavior and, importantly, accomplished an increase of 99 K for the phase transition temperature compared with (CPA) 2 MnBr 4. What’s more, a sequence of Mg-doped Ni-MOFs were synthesized by integrating Mg 2+ ion into the lattice nodes of the parent Ni-MOF, exhibiting obvious enhancement of ferroelectricity than that of the parent Ni-MOF, which is attributed to lattice distortion caused by Mg 2+ ion doping …”