Excitation wavelength dependent luminescence properties for Eu3+-activated Ba2Gd2Si4O13 phosphor

Abstract

The tunable spectroscopy properties of Eu 3? -activated Ba 2 Gd 2 Si 4 O 13 phosphors under different wavelengths from vacuum ultraviolet (VUV) to ultraviolet region have been demonstrated. From the emission spectra, a broad band centered at 410 nm can be observed by choosing the suitable excitation wavelength, which is determined to be the defects produced under high temperature. Based on the result, the phosphor shows a tunable emission depending on the excitation source and the concentration of Eu 3? . In addition, the VUV photoluminescence property of a series of Ba 2 Gd 2 Si 4 O 13 :Eu 3? indicates that the optimal sample is Ba 2 Gd 1.9 Si 4 O 13 :5 %Eu 3? whose emitting color and decay time is beneficial for the application compared to the value for the commercial redemitting phosphor.

The direct identification of quantum cutting in Tm3+ ions and energy transfer in the Tm3+/Yb3+ system based on a Ba2Gd2Si4O13 oxide host

“…Generally, silicates can show characteristics of high physical and chemical stability, easy preparation, excellent optical properties and water-resistant performance 21 and are suitable as host materials for phosphors, for instance, Lu 3 (Al,Mg) 2 (Al, Si) 3 O 12 :Ce 3+ , Sr 3 Y 2 (Si 3 O 9 ) 2 :Eu 2+ , NaScSi 2 O 6 :Eu 2+ , etc. [22][23][24] In this work, the Ba 2 Gd 2 Si 4 O 13 (BGS) compound was chosen as the host and the Tm 3+ /Yb 3+ ions were utilized as the luminescent ions to characterize the QC features and ET processes.…”

Structural and optical properties of a new Milarite type Na3Mg4LiSi12O30:Eu3+ phosphor

“…The oxide hosts are of different kinds such as aluminates, phosphates, silicates, molybdates, tungstates, titanates etc. Many Eu 3+ -activated phosphors, Na 3.6 Y 1.8 (PO 4 ) 3 :Eu 3+ [24] , AlPO 4 :Eu 3+ [25] , NaBaBi 2 (PO 4 ) 3 :Eu 3+ [26] , Ba 2 Gd 2 Si 4 O 13 :Eu 3+ [27] , Sr 3Àx B 2 SiO 8 :xEu 3+ [28] , Na 5 YSi 4 O 12 :Eu 3+ [29] , Sr 9 LiMg(PO 4 ) 7 :Eu 3+ [30] , NaBaY(BO 3 ) 2 :Eu 3+ [31] , Ca 2 LuNbO 6 :Eu 3+ [32] , BaY 2 ZnO 5 :Eu 3+ [33] , SrMg 2 La 2 W 2 O12:Eu 3+ [34] , Sr 3 Gd(PO 4 ) 3 :Eu 3+ [35] , Sr 5 YTi 3 Nb 7 O 30 :Eu 3+ [36] , (Ba,Ca,Na) 9 (Al,Y) 2 Si 6 O 24 :…”

Structure, Morphology and Upconversion Luminescence of Rare Earth Ions Doped LiY9(SiO4)6O2 for Temperature Sensing

“…At present, rare earth (RE) doped luminescence materials have received much attention due to the wide range of applications in lighting and displays, temperature sensing, drug carriers, lasers, and photovoltaic devices. − As one kind of important luminescence process, upconversion (UC) has received much attention. It is an antistokes emission; that is, absorbing two or more long-wavelength photons causes a short-wavelength emission .…”