Lead Borate Glasses and Glass-Ceramics Singly Doped with Dy3+ for White LEDs

Materials

Joanna Pisarska¹  Marta Kuwik¹  Agata Górny¹  WojciechA. Pisarski¹ 

[1] Institute of Chemistry, University of Silesia, Szkolna 9 Street, 40-007 Katowice, Poland;

关键词: lead borate glasses;    glass-ceramics;    dysprosium ions;    white luminescence;   

DOI  :  10.3390/ma13215022

来源: DOAJ

【 摘 要 】

In this paper, some series of lead borate glasses and glass ceramics singly doped with Dy³⁺ ions were prepared and then studied using spectroscopic techniques. Our research includes mainly studies of the luminescence properties of received materials for white light. The luminescence bands associated with the characteristic ⁴F_9/2→⁶H_15/2 (blue), ⁴F_9/2→⁶H_13/2 (yellow) and ⁴F_9/2→⁶H_11/2 (red) transitions of trivalent dysprosium in lead borate systems are well observed. In particular, the Commission Internationale de I’Eclairage (CIE) chromaticity coordinates (x, y) were calculated in relation to potential applications for white light-emitting diodes (W-LEDs). Their values depend on the relative B₂O₃/PbO ratios and PbX₂ contents (where X = Cl, F, Br) in glass composition. For glass-ceramics, the chromaticity coordinates are changed significantly under different excitation wavelengths.

【 授权许可】

Unknown