White photoluminescence and energy transfer properties of Dysprosium and Europium singly and codoped Na2ZnP2O7 phosphors

Thermally stable and color-tunable bi-activated (Dy3+/Eu3+) alkaline earth metasilicate phosphor for luminescent devices

“…Among all the values of n , the best linear fit is obtained at 6, indicating the contribution of d–d interaction to elaborate the energy transfer mechanism from Dy 3+ to Eu 3+ ions. Moreover, the energy transfer efficiency ( η ET ) of the corresponding donor (Dy 3+ ) to the acceptor (Eu 3+ ) can be evaluated using the below equation: 57,58 …”

Synthesis and optical spectroscopy of Na3Y(VO4)2:Eu3+ phosphors for thermometry and display applications

“…The color purity is an important parameter, which could be calculated by using the following equation, according to the literature. 37,38 Here, ( x , y ) is the CIE coordinate of the samples, ( x i , y i ): the CIE coordinates of white illumination, and ( x d , y d ) the CIE coordinate of dominated wavelength.…”

Ratiometric optical thermometry based on a Dy3+, Eu3+ co-doped GdAl3(BO3)4 phosphor

“…Besides, the energy transfer from Dy 3+ to Eu 3+ has been recognized in the study of luminescence color modulation with Dy 3+ and Eu 3+ co-doped phosphors. [21][22][23][24][25] It may also alleviate or intensify the thermal quenching of emissions from Eu 3+ or Dy 3+ , thus increasing the difference between the thermal sensitivities of their emissions.…”