Synthesis and luminescence properties of NaLa(WO4)2:Eu3+ phosphors for white LED applications

Crystal structural and photoluminescence properties of Eu3+ doped MgZn2(PO4)2 phosphors by R+ (R = Li, Na, K) charge compensation

“…It is well known that trivalent europium (Eu 3+ ) with a 4f 6 electronic configuration leads to an intense red emission due to the 5 D 0 → 7 F 1,2 transitions in a variety of host materials. 17–34 So many studies about the Eu 3+ -doped in tungstate, phosphate, silicate, borate, and oxide have been reported, 16–24 e.g. , BaZn 2 (PO 4 ) 2 :Eu 3+ , Sr 3 Sc(BO 3 ) 3 :Eu 3+ ,Bi 3+ , Ca 2 ZnSi 2 O 7 :Dy 3+ ,Eu 3+ , NaLa(WO 4 ) 2 :Eu 3+ , Sr 3 WO 6 :Eu 3+ , and Ca 2 GdSbO 6 :Eu 3+ phosphors have been synthesized.…”

“…It is well known that trivalent europium (Eu 3+ ) with a 4f 6 electronic configuration leads to an intense red emission due to the 5 D 0 → 7 F 1,2 transitions in a variety of host materials. [17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34] So many studies about the Eu 3+ -doped in tungstate, phosphate, silicate, borate, and oxide have been reported, [16][17][18][19][20][21][22][23][24] e.g., BaZn 2 (PO 4 ) 2 :Eu 3+ , Sr 3 Sc(BO 3 ) 3 :Eu 3+ ,Bi 3+ , Ca 2 ZnSi 2 O 7 :Dy 3+ ,Eu 3+ , NaLa(WO 4 ) 2 :Eu 3+ , Sr 3 WO 6 :Eu 3+ , and Ca 2 GdSbO 6 :Eu 3+ phosphors have been synthesized. The synthesis, structure, photoluminescence properties, thermal stability, energy transfer mechanisms, quantum efficiency, and others of them have been studied.…”

Warm‐white light performance of Dy3+, Eu3+: NaLa(WO4)2 phosphors excited with a 450‐nm LED

“…We chose NaLa(WO 4 ) 2 as the host because that tungstate has numerous benefits, such as good thermal stability, environmental safety, a simple synthesis process, and low synthesis temperature (~1000°C). [12][13][14] In particular, the tungstate root [WO 4 ] 2− has good blue absorption and emission bands, which contributes to cross-energy level transitions. Moreover, in NaLa(WO 4 ) 2 , the La 3+ (0.106 nm) has a similar 4f energy structure and ion radius to that of Dy 3+ (0.091 nm) and Eu 3+ (0.096 nm) ions, which makes the doping process easier without breaking the initial crystal field.…”

“…In this operation, we can easily control the blue, yellow, and red light intensity, which makes the CCT controllable. We chose NaLa(WO 4 ) 2 as the host because that tungstate has numerous benefits, such as good thermal stability, environmental safety, a simple synthesis process, and low synthesis temperature (~1000°C) . In particular, the tungstate root [WO 4 ] 2− has good blue absorption and emission bands, which contributes to cross‐energy level transitions.…”

Luminescence Property of Eu3+-doped CaZrSi2O7 Phosphors for White LEDs

“…In recent years ,white light emitting diodes (W-LEDs) which are regarded as a new solid state light soures have been widely used in many fields such as displays and lighting because of its many merits of high compact size, low energy consumption, higher luminous efficiency, environmental friendliness and longer lifetime [1,2].…”