Details

Autor(en) / Beteiligte

• Zhao, Ji
• Zhao, Dan
• Xue, Ya Li
• Zhong, Qiu
• Zhang, Shi Rui
• Liu, Bao Zhong

Titel

Novel tantalum phosphate Na 13 Sr 2 Ta 2 (PO 4 ) 9 : synthesis, crystal structure, DFT calculations and Dy 3+ -activated fluorescence performance

Ist Teil von

• Acta crystallographica. Section C, Structural chemistry, 2018-09, Vol.74 (Pt 9), p.1045-1052

Ort / Verlag

England

Erscheinungsjahr

2018

Link zum Volltext

Quelle

Wiley Blackwell Single Titles

Beschreibungen/Notizen

• A new tantalum phosphate, tridecasodium distrontium ditantalum nonaphosphate, Na Sr Ta (PO ) , was prepared using the high-temperature flux method. The structure can be described as a three-dimensional open framework containing isolated [Ta (PO ) ] units that are interlocked by Na and Sr ions. Band structure studies by the first-principles method revealed that Na Sr Ta (PO ) is an insulator with an indirect band gap of 4.78 eV, which makes it suitable as a luminescent host matrix. A series of solid solutions, i.e. Na Sr Ta (PO ) :xDy (x = 0.01, 0.02, 0.04, 0.06, 0.08, 0.1, 0.12 and 0.14), were prepared and their photoluminescence properties studied. Under 350 nm light excitation, these emit two typical emissions of the Dy ion, i.e. the F → H transition centred at 476 nm and the F → H transition centred at 570 nm.