Synthesis and Up‐conversion Luminescence of Yb³⁺/Ln³⁺ (Ln = Er,Tm,Ho) Co‐Doped Strontium Cerate by Pechini Method

Abstract

Novel up‐conversion (UC) luminescent nanopowders, Sr2CeO4:Yb3+,Ln3+ (Ln = Er, Tm, Ho) were prepared with Pechini method. The Sr2CeO4:Yb3+,Ln3+ (Ln = Er, Tm, Ho) nanopowders had an orthorhombic crystal structure, and showed olive‐like morphology with the length of about 260 nm and width of about 130 nm. Under 980 nm lazer excitation, the Sr2CeO4:Yb3+/Er3+, Sr2CeO4:Yb3+/Tm3+, and Sr2CeO4:Yb3+/Ho3+ nanophosphors exhibit strong green, blue, and green UC luminescence, respectively. The luminescence mechanisms for the doped lanthanide ions were thoroughly analyzed.

Praseodymium ion doped phosphate glasses for integrated broadband ion-exchanged waveguide amplifier

“…In order to expand the bandwidth and increase the population distribution of specific energy levels, some RE 3+ co-doped schemes such as Er 3+ /Yb 3+ , Tm 3+ /Er 3+ , Tm 3+ /Yb 3+ , Er 3+ /Nd 3+ and Ho 3+ /Er 3+ [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23] have been explored. However, the favorable doping host is low-phonon glasses such as sulfide, halide, tellurite and heavy-metal oxide glasses, which are almost impossible to fabricate the channel waveguide devices unless special equipment and complicated technique are employed.…”

Ultraviolet to near-infrared conversion in Nd3+ doped strontium cerate nanophosphors

“…Sr 2 CeO 4 nanophosphors doped with Nd 3+ were successfully prepared using Pechini method (the synthesis process of RE doped Sr 2 CeO 4 nanophosphors has been described in detail elsewhere [13]). According to the stoichiometry of Sr 2Àx CeO 4+x/2 :xNd 3+ (x = 0-0.08), proper amount of the corresponding Sr 3+ , Ce 3+ and Nd 3+ nitrates (Sr(NO 3 ) 2 , Aladdin A.R.…”

“…Since it is an active center with 100% concentration, Sr 2 CeO 4 doped with rare-earth (RE) ions, such as Eu 3+ , Ho 3+ , Er 3+ , Pr 3+ , Tb 3+ , Tm 3+ Sm 3+ , Dy 3+ and Yb 3+ attract lots of attention from researchers [5][6][7][8][9][10][11][12][13]. Effective energy transfer from Ce 4+ -O 2À metal-to-ligand charge transfer (MLCT) to these activation centers has been proposed to be responsible for their luminescence in Sr 2 CeO 4 .…”

“…Sr 2 CeO 4 :Eu 3+ (Dy 3+ , Tm 3+ ) materials show a highly efficient red (yellow, blue) emission and might be strong candidates for display applications such as ultraviolet light-emitting diodes (UV-LEDs) [5][6][7][8]. RE (Ho 3+ , Er 3+ , Tm 3+ Yb 3+ ) doped Sr 2 CeO 4 crystals have been studied as laser materials or spectral conversion materials because of their favorable thermal, physical properties and superior lasing performances [9][10][11][12][13]. However, there are no studies on the Nd-doped Sr 2 CeO 4 materials.…”

“…The Pechini method includes a combined process of metal complex formation and polyesterification of organics, frequently used as the alternative to the metal-alkoxides based sol-gel process [5,[13][14][15][16]. This method gives lower cost, better chemical homogeneity and finer particles than those produced by the solid-state reaction [5,6,13].…”