The experimental excitations for luminescent glasses are usually monochromatic, but LED chips in applications have an emission bandwidth. In order to investigate the luminescence properties of rare earth ions doped glasses excited by broadband lights, a computational model was presented based on the dependences of excitation wavelengths on emission spectra, chromaticity coordinates and correlated color temperatures (CCTs). The simulations were carried out applying Ce/Tb/Eu co-doped calcium borosilicate glasses as examples. The results show that for the same CCTs, the center wavelengths of chips are different with the excitation wavelengths of fluorescence spectrophotometers.

Date Published: 30 September 2013
PDF: 8 pages
Proc. SPIE 8835, LED-based Illumination Systems, 88350P (30 September 2013); doi: 10.1117/12.2022090

Published in SPIE Proceedings Vol. 8835:
LED-based Illumination Systems
Jianzhong Jiao, Editor(s)