Green upconversion luminescence from poly-crystalline Yb3+, Er3+ Co-doped CaMoO4

Infrared-to-visible upconversion emission of Er3+/Yb3+-codoped SrMoO4 phosphors as wide-range temperature sensor

“…For the unsaturated UC process, the number of photons, which is required to populate the upper emitting level, can be roughly estimated by the following expression [6,24]:…”

Up-conversion luminescent properties and optical thermometry of LaMgAl11O19: Yb3+/Er3+ phosphors

“…And the concentration quenching effect could also confirm that the energy transfer between the nearest Er 3 þ and Yb 3 þ /Er 3 þ ions is occurred. The distance between Er 3 þ and Er 3 þ or Er 3 þ and Yb 3 þ ions is reduced as increasing Er 3 þ concentration, so that the non-radiative relaxation will be strengthened and then the UC luminescence intensity decreased [27]. So we have selected a better luminous one of these isostructural samples LaMgAl 11 O 19 : 0.02Er 3 þ , 0.05Yb 3 þ and investigated its luminescent temperature sensing property, which will be discussed in the following work.…”

Luminescence enhancement of CaMoO4:Eu3+ phosphor by charge compensation using microwave sintering method

“…With their advantages of high efficiency, long lifetime, and non-pollution, LEDs have been widely applied in lighting and display devices, including plasma display panel, field emission display, white light diode, etc. [4][5][6][7]. However, white LEDs with GaN based blue-emitting chips and yellow-red phosphors have poor color rendering index due to the deficiencies in red emission [8] in current market.…”