The heating-induced unprecedented monotonous increase in Yb3+excited state(^(2)F5/2)lifetime is found in Nd^(3+)/Yb^(3+)codoped fluoride nanoparticles,which is proved to originate from the alleviation of energy migrat...The heating-induced unprecedented monotonous increase in Yb3+excited state(^(2)F5/2)lifetime is found in Nd^(3+)/Yb^(3+)codoped fluoride nanoparticles,which is proved to originate from the alleviation of energy migration-mediated surface quenching with elevated temperature.This unique phenomenon is evaluated for thermometric performance in terms of lifetime luminescence thermometry,and the maximum absolute/relative temperature sensitivity(S_(a)/S_(r))reaches as high as 2.68μs K^(−1)/1.59%K^(−1)in the biological temperature region,indicating that the studied nanomaterial can offer great potential for lifetime luminescence thermometry in biological areas.展开更多
基金supported by the National Natural Science Foundation of China(11774346,11674318,51472242,51872288).
文摘The heating-induced unprecedented monotonous increase in Yb3+excited state(^(2)F5/2)lifetime is found in Nd^(3+)/Yb^(3+)codoped fluoride nanoparticles,which is proved to originate from the alleviation of energy migration-mediated surface quenching with elevated temperature.This unique phenomenon is evaluated for thermometric performance in terms of lifetime luminescence thermometry,and the maximum absolute/relative temperature sensitivity(S_(a)/S_(r))reaches as high as 2.68μs K^(−1)/1.59%K^(−1)in the biological temperature region,indicating that the studied nanomaterial can offer great potential for lifetime luminescence thermometry in biological areas.
