Repozytorium publikacji - Politechnika Gdańska

The B2O3-Bi2O3-AlF3 glass system doped with Eu3+, Tb3+, Tm3+ and triply doped with Eu3+/Tm3+/Tb3+ ions in different molar ratios were successfully synthesized. Glass transition and crystallization temperatures were examined by Differential Scanning Calorimetry (DSC) measurements. X-ray Diffraction (XRD) confirmed the amorphous character of the samples. Fourier Transform Infrared Spectroscopy (FTIR) revealed that the glass matrix consists of [BO3] and [BO4] structural units, while X-ray Photoelectron Spectroscopy (XPS) confirmed the presence of AlF3. An increase in luminescence spectra intensity was detected by Photoluminescence Spectroscopy (Pl), due to the presence of 10 mol% of AlF3. The RE3+ ions embedded in the glass matrix can be simultaneously excited by a single UV light. According to the CIE results the emitted color can be tunable by varying the excitation wavelength and sample composition. The presented results confirm that the proposed glass system could be a candidate for color-tunable phosphors in LEDs.

Autorzy

• Karolina Milewska link otwiera się w nowej karcie ,
• Michał Maciejewski link otwiera się w nowej karcie ,
• dr inż. Marcin Łapiński link otwiera się w nowej karcie ,
• dr Anna Synak,
• Mirosław Behrendt,
• prof. dr hab. inż. Wojciech Sadowski link otwiera się w nowej karcie ,
• prof. dr hab. inż. Barbara Kościelska link otwiera się w nowej karcie