Superb thermal stability purple-blue phosphor through synergistic effect of emission compensation and nonradiative transition restriction of Eu2+

Highly efficient blue‐emitting phosphor via charge compensation strategy and its application for white LED lighting

“…And the white LED2 generates high‐quality white emission with Ra = 92.2, CCT = 3158 K and CIE coordinates of (0.4104, 0.3651). The Ra values of our LED prototype exceed those obtained with previously reported blue phosphors such as NaBaBO 3 :Ce 3+ (Ra = 89.6), 65 Sr 3 (PO 4 ) 2 :Eu 2+ (Ra = 87.3) 66 and K 2 SrBa(PO 4 ) 2 :Eu 2+ (Ra = 86.1) 67 . These results implicate that as‐prepared SGSBO:0.08Ce 3+ and SGSBO:0.08Ce 3+ ,0.08Na + blue phosphors are promising in n‐UV excited high‐quality white LEDs.…”

Near-UV excited multifunctional near-infrared phosphors for anti-counterfeiting and ratiometric thermometer applications

“…Therefore, a hybrid functional PBE0 was applied to obtain the band gap value of 5.90 eV, confirming the experimental value. 3,24 The excitation energy (300–500 nm, 2.48–4.14 eV) was far lower than the band gap value, ruling out the possible origin of the self-trapped exciton. It was reported that the exchange couple pairs of transition metal ions shortened the luminescence decay time.…”

The pressure and temperature evolution of the Ca3V2O8 crystal structure using powder X-ray diffraction

“…There are few reports concerning the Debye temperature using DFT calculations for materials related to Ca 3 V 2 O 8 but described by different space groups. For example, in Sr 3 P 2 O 8 (space group R 3 ̄m ) 59 the calculated Debye is 559 K. The structure rigidity will increase by replacing Ca with the heavier atom Sr, which could cause the differences in Debye temperatures. A similar difference in Debye temperatures is observed when comparing Ca 3 (PO 4 ) 2 : 0.07Ce 3+ ( θ D = 541 K) to Ca 1.5 Sr 1.5 (PO 4 ) 2 : 0.07Ce 3+ ( θ D = 730 K).…”