A red phosphor LaSc3(BO3)4:Eu3+ with zero-thermal-quenching and high quantum efficiency for LEDs

How to Obtain Anti‐Thermal‐Quenching Inorganic Luminescent Materials for Light‐Emitting Diode Applications

“…Eu 3+ -doped LaSc 3 (BO 3 ) 4 shows a typical anti-TQ property, which maintains 102.3% of PL peak intensity and 129.2% of PL integral intensity at 275 °C (Figure 3a). [26] This thermally induced enhancement of Eu 3+ emission is consistent with the thermal disturbance model (Figure 3b). Under 395 nm light excitation, the electrons of Eu 3+ are directly excited to the 5 L 6 state, and then they gradually transfer into the adjacent states 5 D J (J = 0-3) with the energy loss during the NR transition.…”

Strong and pure red-emitting Eu3+-doped phosphor with excellent thermal stability for warm WLEDs

“…Recently, there have been some reports that Eu 3+ excitation has an abnormally weak charge transfer band, such as Sr 2 LaNbO 6 :Eu 3+ , Cs 3 GdGe 3 O 9 :Eu 3+ , LaSc 3 (BO 3 ) 4 :Eu 3+ , Ca 2 Ga 2 SiO 7 :Eu 3+ , and Ca 19 Mg 2 (PO 4 ) 14 :Eu 3+ , etc. [16][17][18][19][20] Hence, a suitable host may lead to a stronger intra-4f transition absorption that matches well with the emission of n-UV or blue LED chips.…”

Development of deep red–emitting CaBiVO5:Pr3+ phosphor for multifunctional optoelectronic applications

“…Such fabricated pc-LEDs can aid to control the duration of sunlight sensed by plants, which can regulate the flowering time of plants. 2,5,[13][14][15] Therefore, it is of great significance to develop eco-friendly phosphors-emitting red light under n-UV/blue light excitation for promoting regulated plant growth.…”

“…Such fabricated pc-LEDs can aid to control the duration of sunlight sensed by plants, which can regulate the flowering time of plants. 2,5,[13][14][15] Therefore, it is of great significance to develop eco-friendly phosphors-emitting red light under n-UV/blue light excitation for promoting regulated plant growth.Recently, numerous red phosphors incorporating rareearth (RE) ions (Eu 3+ and Sm 3+ ) have been investigated, which possess excellent chemical, thermal, and physical stabilities along with intense emission corresponding to the intra-4f transitions. 12,[16][17][18] But, there are only a few reports on Pr 3+ -doped red-emitting materials and their application for artificial lighting in plant growth systems.…”