White light generation from Dy{sup 3+}-doped ZnO-B{sub 2}O{sub 3}-P{sub 2}O{sub 5} glasses

Journal Article · Wed Jul 01 00:00:00 EDT 2009 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.3159899· OSTI ID:21359268

Jayasimhadri, M; Jang, Kiwan; Lee, Ho Sueb ^[1]; Chen, Baojiu ^[2]; Yi, Soung-Soo ^[3]; Jeong, Jung-Hyun ^[4]

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1. Department of Physics, Changwon National University, Changwon 641-773 (Korea, Republic of)
2. Department of Physics, Dalian Maritime University, Dalian 116026 (China)
3. Department of Photonics, Silla University, Busan (Korea, Republic of)
4. Department of Physics, Pukyong National University, Busan (Korea, Republic of)

Dysprosium doped ZnO-B{sub 2}O{sub 3}-P{sub 2}O{sub 5} (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 {sup 4}F{sub 9/2}->{sup 6}H{sub 15/2} and {sup 4}F{sub 9/2}->{sup 6}H{sub 13/2} transitions of Dy{sup 3+} ions, respectively. Combination of these blue and yellow bands gives white light to the naked eye. First time, it was found that ZnO-B{sub 2}O{sub 3}-P{sub 2}O{sub 5} 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 Dy{sup 3+}: ZBP glasses to evaluate the white light emission.

• OSTI ID: 21359268
• Journal Information: Journal of Applied Physics, Vol. 106, Issue 1; Other Information: DOI: 10.1063/1.3159899; (c) 2009 American Institute of Physics; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
AMORPHOUS STATE
BORON OXIDES
DOPED MATERIALS
DYSPROSIUM
DYSPROSIUM IONS
EXCITATION
GALLIUM NITRIDES
INFRARED SPECTRA
LIGHT EMITTING DIODES
PHOSPHATE GLASS
PHOSPHORUS OXIDES
PHOTOLUMINESCENCE
RAMAN SPECTRA
X-RAY DIFFRACTION
ZINC OXIDES
BORON COMPOUNDS
CHALCOGENIDES
CHARGED PARTICLES
COHERENT SCATTERING
DIFFRACTION
ELEMENTS
EMISSION
ENERGY-LEVEL TRANSITIONS
GALLIUM COMPOUNDS
GLASS
IONS
LUMINESCENCE
MATERIALS
METALS
NITRIDES
NITROGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHOSPHORUS COMPOUNDS
PHOTON EMISSION
PNICTIDES
RARE EARTHS
SCATTERING
SEMICONDUCTOR DEVICES
SEMICONDUCTOR DIODES
SPECTRA
ZINC COMPOUNDS