High down-conversion in MF2:Yb:R (M = Ca, Sr; R = Pr, Ce, Eu) solid solution powder for photonics

We synthesized MF
2
:Yb:R (M = Ca, Sr; R = Pr, Ce, Eu) powders by a different kind of precipitation techniques. We determined optimal compositions with a quantum efficiency of photon transfer about 190 % (quantum cutting). In finally, we approached quantum cutting phenomenon. It’s useful for increasing of crystalline silicon solar cell efficiency.