Tunable emission of LiCa3MgV3O12:Bi3+ via energy transfer and changing excitation wavelength

An orange‐emitting phosphor BaSrGa4O8:Bi3+,K+ with unique one‐dimensional chain structure for high index color WLEDs

“…However, the results show that the feature absorption peak of Bi 3+ ions decreases significantly with the increasing doped K + ions, indicating that the enhancement is not due to the increase in the absorption capacity of the Bi 3+ ions after doping by the K + ions, but comes from the energy level splitting of more Bi 3+ ions. 24,25 According to afterglow mechanism, more traps there are in the material, the weaker the photoluminescence of the material is. However, our co-doped systems have more pitfalls as shown in the thermoluminesence (TL) curves ( Figure 3E).…”

“…Generally, an increase in absorption can induce an increase in emission, and therefore, the absorption of the co‐doped sample is also performed in Figure 3D. However, the results show that the feature absorption peak of Bi 3+ ions decreases significantly with the increasing doped K + ions, indicating that the enhancement is not due to the increase in the absorption capacity of the Bi 3+ ions after doping by the K + ions, but comes from the energy level splitting of more Bi 3+ ions 24,25 . According to afterglow mechanism, more traps there are in the material, the weaker the photoluminescence of the material is.…”

A novel pale‐yellow Ba2ZnGe2O7:Bi3+ phosphor with site‐selected excitation and small thermal quenching

“…As some of the typical non‐rare earth activators, Bi 3+ ‐doped phosphors exhibit abundant emission colors from visible to near‐infrared light due to the 3 P 1 ‐ 1 S 0 transitions of Bi 3+ ions. Moreover, due to the outer electron exposure of the 6S 2 electronic configuration, the emission colors of Bi 3+ ions strongly depend on the coordination environment of the host lattice, such as the bond distance, coordination number, lattice symmetry, and so on . Therefore, further exploration on the luminescence performance of Bi 3+ ions in different hosts is interesting.…”

“…Moreover, due to the outer electron exposure of the 6S 2 electronic configuration, the emission colors of Bi 3+ ions strongly depend on the coordination environment of the host lattice, such as the bond distance, coordination number, lattice symmetry, and so on. [9][10][11][12][13][14][15][16][17][18][19][20] Therefore, further exploration on the luminescence performance of Bi 3+ ions in different hosts is interesting.…”

Luminescence and energy transfer of Tm3+ and Dy3+ co-doped Na3ScSi2O7 phosphors

“…[1][2][3][4] Thus, WLEDs have been widely used in displays, optical bers, temperature sensors and other elds. 5,6 The current WLED is formed by combining the InGaN-based blue LED chip with the yellow luminous YAG:Ce 3+ phosphor. 7,8 An alternative method is to use a NUV LED chip to stimulate RGB (red, blue, green) phosphors to obtain white light, which is the most popular type in the market.…”