Synthesis and luminescence properties of Sr3(VO4)2:Eu3+ phosphor and emission enhancement by co-doping Li+ ion

A novel Sm3+ singly doped LiCa3ZnV3O12 phosphor: a potential luminescent material for multifunctional applications

“…Recently, rare-earth ion doped inorganic phosphors have attracted much attention since they can be used in a variety of applications, such as solid-state lighting, displays, and solar cells. [1][2][3][4][5][6][7][8] As is well-known, vanadate compounds usually have a broad and intense charge transfer (CT) absorption band originating from the VO 4 3À groups. Moreover, when the vanadate compounds are excited by the CT band, these materials can exhibit a broad emission band in the visible region.…”

Enhancement of the luminescence properties of Sr3(PO4)2:Dy3+,Li+ white‐light‐emitting phosphors by charge compensator Li+ co‐doping

“…It can be seen that the luminescence intensity of Dy 3+ increased noticeably with addition of Li + as the charge compensator. Charge imbalance is generated in the Sr 3 (PO 4 ) 2 structure by the substitution of Dy 3+ ions for Sr 2+ ions, and the Sr 3 (PO 4 ) 2 host has to form a Sr vacancy shown in the formula 3Sr Sr → 2Dy Sr + V , which can bring defects into the Sr 3 (PO 4 ) 2 host structure and result in decreased luminescence intensity . However, Li + ion doping would lead to charge compensation by the process 2 V + Dy 3+ + Li + → Dy Sr + Li , which leads to the apparent enhancement of luminescence intensity.…”

Enhanced red emission from BaMoO4: Eu3+ by Bi3+ co‐doping

“…However, sensitization processes such as energy transfer from RE‐O charge transfer, host matrix absorption, or other sensitizing ions, are commonly required to overcome the low absorption cross‐section via the parity forbidden intra f – f transition of RE 3+ ions . To this end, tungstate and molybdate have been widely used as host matrixes because efficient energy transfer from host to RE 3+ can be readily realized . Mo‐O or W‐O charge transfer absorbs UV excitation lights and non‐radiatively transfer to RE 3+ , leading to intense emissions from RE 3+ ions.…”