Blue-light-excited red emission in a CaO:Eu phosphor

Novel dual spectral conversion via Eu2+, Cu+-coactivated core–shell-structured CaS@CaZnOS phosphors for efficient photosynthesis of plants

“…The luminescence behavior of Cu ions and the mechanism of energy transfer in the core-shell-structured CaS@CaZnOS are discussed in detail. light (VTB), ultraviolet light to red light (VTR), green light to red light (GTR), such as Ca 1.1 Sr 0.9 SiO 4 :Ce 3+ ,Li + (VTB), 18 MZnOS: Bi 3+ /Cu + (M = Ca, Sr) (VTB), [19][20][21][22][23] CaS:Eu 2+ (GTR), [24][25][26][27][28] CaO: Eu 2+ (GTR), 29,30 SrGa 2 O 4 :Cu 2+ (VTR), 31 SrMgAl 10Ày Ga y O 17 :Mn 4+ (VTR) 32 are all single-LCAs. A spectral mismatch between the sun and plants results in a waste of sunlight.…”