XPS characterization of SmNbO4 and SmTaO4 precursors prepared by sol-gel method

H Brunckova, M Kanuchova, H Kolev, E Mudra… - Applied Surface …, 2019 - Elsevier
Samarium niobate SmNbO 4 (SNO) and tantalate SmTaO 4 (STO) precursors were prepared
by sol-gel method and annealing at 1000° C. The different polymorphs, orthorhombic and …

Host dependent upconversion, color tunability and laser induced optical heating via NIR excitation in Ho3+, Yb3+ doped YXO4 (X= V, Nb, Ta) phosphor materials …

A Roy, A Dwivedi, H Mishra, SB Rai - Materials Research Bulletin, 2022 - Elsevier
This work reports a comparative upconcversion (UC) emission study of the Ho 3+, Yb 3+ co-
doped in pure YVO 4, YTaO 4, YNbO 4 and in their mixed (YTa 1-x V x O 4, YTa 1-y Nb y O …

Luminescence and Raman studies of YNbO4 phosphors doped by Eu3+, Ga3+, and Al3+

M Nazarov, YJ Kim, EY Lee, KI Min, MS Jeong… - Journal of Applied …, 2010 - pubs.aip.org
Efficient phosphors based on YNbO 4 and doped by Eu 3+⁠, Ga 3+⁠, and Al 3+ were
synthesized with different fluxes under different thermal conditions and investigated under x …

Dual mode (upconversion and downshifting) behavior of Ho3+/Yb3+/Bi3+ co-doped YTaO4 phosphor and its application as a security ink

A Roy, A Dwivedi, H Mishra, D Kumar, SB Rai - Journal of Alloys and …, 2020 - Elsevier
Abstract The Ho 3+/Yb 3+ co-doped YTaO 4 phosphor has been synthesized in absence
and presence of Bi 3+ ion using high temperature solid state reaction method. X-ray …

Luminescence and structural properties of Y (Ta, Nb) O4: Eu3+, Tb3+ phosphors

I Arellano, M Nazarov, CC Byeon, EJ Popovici… - Materials Chemistry and …, 2010 - Elsevier
Yttrium tantalate (YTaO4), yttrium niobium-tantalate (YTaNbO4) and yttrium niobate (YNbO4)
doubly doped by Eu3+ and Tb3+, were investigated using X-ray diffraction and X-ray …

Generation of color tunable emissions from Ho3+/Tm3+/Yb3+ co-doped YTaO4 phosphors through NIR excitation under different conditions (variation of concentration …

A Roy, A Dwivedi, H Mishra, AK Rai, SB Rai - Journal of Alloys and …, 2021 - Elsevier
This work reports the color tunable emission from Ho 3+/Tm 3+/Yb 3+ co-doped YTaO 4
phosphors synthesized through high temperature solid state reaction method. Pure phase …

Production, characterization, and luminescent properties of Eu3+ doped yttrium niobate–tantalate films

S Yildirim, S Demirci, K Ertekin, E Celik… - Journal of Advanced …, 2017 - Springer
Monoclinic yttrium tantalate (M′-YTaO 4, M′-YTO), and two different kinds of yttrium
niobium-tantalate (M′-YTa 0.85 Nb 0.15 O 4 (M′-YTNO) and Eu 3+ doped M′-YTa 0.85 …

Wide multicolor tunability of blue-to-green up-conversion emission and white light generation in Pr3+/Yb3+ co-doped yttrium tantalates

H do Prado Labaki, FJ Caixeta, RR Gonçalves - Journal of Luminescence, 2022 - Elsevier
We achieved wide multicolor tunable up-conversion emission and white light generation in
Pr 3+/Yb 3+ co-doped yttrium tantalates prepared by a soft sol–gel method designed to …

Yttrium tantalate containing high concentrations of Eu3+ as dopant: synthesis and structural and luminescence features

FH Borges, FJ Caixeta, RR Pereira… - Journal of …, 2018 - Elsevier
This study reports the synthesis and the structural and spectroscopic characterization of Eu
3+-doped yttrium tantalate prepared by a new sol–gel method, which affords the …

Luminescence properties of the yttrium and gadolinium tantalo-niobates

O Voloshyna, I Boiaryntseva, D Spassky… - Solid state …, 2015 - Trans Tech Publ
Ceramic samples of tantalo-niobates solid solutions with yttrium and gadolinium cations (RE
(NbxTa1-x) O4, RE= Y or Gd, and x= 0÷ 1) have been obtained by solid-state synthesis …