Ca3La6Si6O24:Eu3+ orange-red-emitting phosphor: Synthesis, structure and luminescence properties

CaAl2Si2O8:Dy3+, Eu3+: synthesis, luminescence properties, energy transfer, and tunable emission

“…16 Eu 3+ ion exhibits orange and pure red emissions because of the transitions from the excited state 5 D 0 to the ground states 7 F J ( J = 0, 1, 2, 3, 4, and 5) in the 4f 6 electron configuration. 17 There are a number of research studies on Eu 3+ -doped luminescent materials, such as Ca 3 La 6 Si 6 O 24 :Eu 3+ , 18 Na 2 Ln 4 (MoO 4 ) 7 : Eu 3+ [Ln = La, Gd, and Y], 19 (Ba, Ca) 2 ScAlO 5 :Eu 3+ , 20 Ca 9 MgLi (PO 4 ) 7 :Eu 3+ , 21 and (Sr, Ba) 2 YTaO 6 :Eu 3+ . 22 From the above Dy 3+ or Eu 3+ -doped luminescence materials, we can find that there is a spectral overlap between the emission spectrum of Dy 3+ -doped luminescence materials and the excitation spectrum of Eu 3+ doped luminescence materials, implying that energy transfer can occur from Dy 3+ to Eu 3+ ions.…”

“…Eu 3+ ion exhibits orange and pure red emissions because of the transitions from the excited state 5 D 0 to the ground states 7 F J ( J = 0, 1, 2, 3, 4, and 5) in the 4f 6 electron configuration. 17 There are a number of research studies on Eu 3+ -doped luminescent materials, such as Ca 3 La 6 Si 6 O 24 :Eu 3+ , 18 Na 2 Ln 4 (MoO 4 ) 7 :Eu 3+ [Ln = La, Gd, and Y], 19 (Ba, Ca) 2 ScAlO 5 :Eu 3+ , 20 Ca 9 MgLi(PO 4 ) 7 :Eu 3+ , 21 and (Sr, Ba) 2 YTaO 6 :Eu 3+ . 22…”

Synthesis of SrSiO3:Tb3+, Eu3+, Li+ red phosphors for WLED and study of their luminescence properties

“…10) Therefore, in order to improve the color rendering index of white LEDs, the study of red phosphors and their integration into white LEDs is essential. [11][12][13][14] Eu 3+ can emit intense red light in many matrix lattices under near-UV excitation due to its unique 5 D 0 → 7 F J leap. 15,16) The co-doping of Tb 3+ with Eu 3+ can make the phosphor have a wider excitation range in the UV region.…”