White light emission and effect of annealing on the Ho 3+ –Yb 3+ codoped BaCa 2 Al 8 O 15 phosphor

Hydrothermal synthesis of Ba3Sc2F12:Yb3+, Ln3+ (Ln = Er, Ho, Tm) crystals and their up conversion white light emission

“…In order to achieve a combination of RGB emissions in a single inorganic phosphor, it is possible to incorporate Er 3+ , Tm 3+ , Ho 3+ and Yb 3+ ions into the host material, which is one of the most effective methods to obtaining UC white light. [53][54][55] In our report, we prepared Ba 3 Sc 2 F 12 crystal by hydrothermal method under mild condition, and researched the effects of surfactants and pH value on the phase and morphology. Furthermore, the molar ratio of F À /Sc 3+ has a large effect on the size and aspect ratio of the crystal.…”