The nonradiative transition charges Stick to the system WNR = W (0) exp(-alphap), where by p is the number of phonons matching the Electrical power gap. The nonradiative changeover fees of Er3+ show temperature dependence according to the multiphonon leisure idea. In Tm3+ the temperature dependence of nonradiative leisure fees https://er-yb-yab-crystal63952.ageeksblog.com/32195108/considerations-to-know-about-er-yb-yab-crystal