Journal
JOURNAL OF APPLIED PHYSICS
Volume 106, Issue 1, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3159899
Keywords
amorphous state; boron compounds; doping profiles; dysprosium; infrared spectra; light emitting diodes; melt processing; phosphate glasses; photoluminescence; quenching (thermal); Raman spectra; vibrational modes; X-ray diffraction; zinc compounds
Categories
Funding
- Korean Government [KRF-2007-412-J00902]
- National Research Foundation of Korea [핵06B2812, 핵06B2813] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Ask authors/readers for more resources
Dysprosium doped ZnO-B2O3-P2O5 (ZBP) glasses were prepared by a conventional melt quenching technique in order to study the luminescent properties and their utility for white light emitting diodes (LEDs). X-ray diffraction spectra revealed the amorphous nature of the glass sample. The present glasses were characterized by infrared and Raman spectra to evaluate the vibrational features of the samples. The emission and excitation spectra were reported for the ZBP glasses. Strong blue (484 nm) and yellow (574 nm) emission bands were observed upon various excitations. These two emissions correspond to the F-4(9/2)-> H-6(15/2) and F-4(9/2)-> H-6(13/2) transitions of Dy3+ ions, respectively. Combination of these blue and yellow bands gives white light to the naked eye. First time, it was found that ZnO-B2O3-P2O5 glasses efficiently emit white light under 400 and 454 nm excitations, which are nearly match with the emissions of commercial GaN blue LEDs and InGaN LED, respectively. CIE chromaticity coordinates also calculated for Dy3+: ZBP glasses to evaluate the white light emission.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available