Combustion synthesis and upconversion luminescence of CaSc2O4:Yb3+,Er3+ nanopowders

Judd–Ofelt analysis of Ho3+ doped in ceramic CaSc2O4

“…CaSc 2 O 4 is a very promising host for efficient up-/down-conversion [13] due to low energy phonons, short distances between positions that can be occupied by the dopants (assuring an efficient energy transfer) and high solubility of ytterbium ions. Efficient visible upconversion luminescence was already obtained in CaSc 2 O 4 codoped with Er 3 þ and Yb 3 þ [14], Tm 3 þ and Yb 3 þ [13], and with Ho 3 þ and Yb 3 þ [15]. Cooperative down-conversion and near infrared luminescence were obtained in CaSc 2 O 4 doped with Tm 3 þ and Yb 3 þ [16].…”

Judd–Ofelt and energy-transfer analysis of Er3+ doped in CaSc2O4 ceramic samples

“…Efficient visible upconversion luminescence was obtained in CaSc 2 O 4 codoped with Er 3 þ and Yb 3 þ [3], Tm 3 þ and Yb 3 þ [1], and with Ho 3 þ and Yb 3 þ [4]. Cooperative downconversion and near-infrared luminescence were observed in CaSc 2 O 4 doped with Tm 3 þ and Yb 3 þ [5].…”

“…There is only one paper concerning Er 3 þ luminescence in CaSc 2 O 4 [3]. The nanopowders of CaSc 2 O 4 doped with Er 3 þ and Yb 3 þ were obtained by the combustion method.…”

Sol–gel-hydrothermal synthesis of Er3+:Y3Al5O12/Pt–TiO2 membrane and visible-light driving photocatalytic hydrogen evolution from pollutants

“…The high degradation effect can be attributed to some special properties of the up-conversion luminescence agents, which can generate one high-energy photon by absorbing two or more incident low-energy photons. As well known, some up-conversion luminescence agents, such as NaYF 4 :Yb/Er, CaSc 2 O 4 :Yb/Er, Er 3+ :YAlO 3 and Er 3+ :Y 3 Al 5 O 12 , have been studied detailedly [33,34]. Among them, the Er 3+ :Y 3 Al 5 O 12 has been widely used in many fields due to its high conversion luminescence efficiency and chemical stability.…”