Growth, crystal structure and IR luminescence of KSrYEr(BO).

A series of novel KSrYEr(BO) (x = 0-1) phosphors that emit near-infrared radiation was synthesized using solid-state methods. Pure Y and Er crystals were grown using a KF flux via the top-seeded solution growth technique. In situ high-temperature single crystal X-ray diffraction, Raman spectroscopy and DFT calculations were used for characterization.

Systematic rare Earth doping to adopt an 32 type huntite structure in NdSc(BO) crystals.

This study is focused on determining the type and quantity of REE impurities responsible for converting the structure of NdSc(BO) into an 32 polymorph. According to the single crystal X-ray diffraction of RNdSc(BO) (R = Sm-Lu, + + = 4) the samples probably contain several polymorphic modifications. However, the predominant structure has been defined as 32 for R = Eu, Er, Tm, and Yb and 321 for R = Sm, Gd, Tb, Dy, and Ho.

Synthesis and Growth of Rare Earth Borates NaSrR(BO) (R = Ho-Lu, Y, Sc).

NaSrR(BO) (R = Ho-Lu, Y, Sc) compounds were obtained for the first time. Their structures exhibit disordered positions of Sr and Na atoms while RO polyhedra are connected through the BO groups. Large distances between R atoms and high transparency in the range of 250-900 nm make them promising for phosphor applications.

Study of an EuBO-ScBO system and EuSc(BO), EuSc(BO) orthoborates.

The EuBO-ScBO system was investigated by solid state synthesis and DSC methods. In this system, a new EuSc(BO) compound was found. It crystallizes in the 3̄ space group with unit cell parameters of = 4.