High-efficiency YAG:Ce3+ glass-ceramic phosphor by an organic-free screen-printing technique for high-power WLEDs

Intensified synthetic approach for GdYAG:Ce phosphors with ultrahigh color rendering toward healthy lighting

“…Firstly, we characterized the luminescence properties of blank films and phosphor films, and the silicone resin did not emit under excitation at 460 nm (Figure 6B). Characterizing luminous performance of LED devices with x = 0.6 and 1.2, it can be seen that the phosphor with higher red component in the emission spectrum can present the original color of the item better with the same ratio of phosphor to resin and CRI of the phosphor with x = 1.2 can reached to 83.8, and the CCT reduced to 5357 K (Figure 6C–F), which are greatly better than the value of YAG:Ce 38,39 …”

Composite Color Converters Based on Tb3Al5O12:Ce Single‐Crystalline Films and Y3Al5O12:Ce Crystal Substrates

“…[20] Intensities of both main absorption bands are enhanced with increasing of Ce 3þ concentration from 0.1 to 0.25 at% (S2 and S1 samples) and substrate thickness from 0.5 to 1.0 mm (S1, S2, and S3 samples), which is in agreement with previous reports. [21] It is obvious that in the case of TbAG:Ce SCF/YAG:Ce SC CCCs (Figure 3b), the absorption spectra represent the superposition of absorption bands of Ce 3þ ions in TbAG and YAG hosts. Such an imposition of Ce 3þ absorption bands originating from both garnet matrices leads to a significant www.advancedsciencenews.com www.pss-rapid.com broadening of the main E 1 absorption band of TbAG:Ce SCF/YAG:Ce SC CCCs, which is an advantage for fitting with commercially available blue LEDs.…”

(Sr, Ca)AlSiN3:Eu2+ Phosphor-Doped YAG:Ce3+ Transparent Ceramics as Novel Green-Light-Emitting Materials for White LEDs

“…From Figure 4 a, showing the PL (λ ex = 460 nm) spectra, it was clear that the SCASNE phosphor ceramics had broadband emission centered at 533 nm under 460 nm excitation. This was a “blue-shift”, compared to the conventional typical Ce 3+ :5d→4f emission spectra [ 33 , 34 , 35 ]. Additionally, as the (Sr, Ca)AlSiN 3 :Eu 2+ doping concentration increased (from 0SCASNE to 1SCASNE), the emission power became stronger, and the full width at half maximum (FWHM) was broader.…”