Systemic development of a Bismuth-containing multifunctional phosphate for field emission displays and thermochromic applications

Abstract For fluorescent materials applied in various areas, a systematic design procedure was expected to be explored. Herein a Bismuth-containing multifunctional phosphate phosphor Mg2Bi(PO4)O2 was invented from structural computational simulation through practical experiment to new performance improvement and development. As a result, the alkaline earth ion alloyed Mg2Bi0.99Ba0.01(PO4)O2 showed a favorable absorptivity of electron energy and excellent resistance to the high power electron beam, which could be potential for FEDs. On the other side, by full utilization of the inherent elastic polyhedron frame, the Sm3+ was doped into Mg2Bi(PO4)O2 for multiple visualized thermochromic applications such as temperature sensor, fluorescence heating anti-counterfeiting, security information encryption, etc. The final product was proved to have a great sensitivity parameter higher than most reported data (3.75%K−1). More importantly, this contribution provided an innovation way of developing advanced multifunctional materials in both the industrial and academic level.