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Erbium-to-dysprosium energy-transfer mechanism and visible luminescence in lead-cadmium-fluorogermanate glass excited at 405 nm
- Source :
- Chemical Physics Letters. 723:28-32
- Publication Year :
- 2019
- Publisher :
- Elsevier BV, 2019.
-
Abstract
- Erbium-to-dysprosium energy-transfer and visible luminescence in the blue, green, yellow, red, and NIR is reported in PbGeO3:PbF2:CdF2 glass under 405 nm excitation. Absorption and excitation spectra were examined in the UV–VIS-IR spectral region. Emission showed a decrease in the Er3+ emissions around 520 and 545 nm when Dy3+ was added to the host matrix, while the Dy3+ emission around 576 nm (4F9/2 – 6H13/2) increased concomitantly. The recorded lifetime for Er3+ emissions also decreased, as Dy3+ concentration was increased for fixed Er3+ content. No similar behavior was observed when Er3+ concentration varied, confirming a one-way Er3+-to-Dy3+ energy transfer mechanism.
- Subjects :
- Cadmium
Materials science
Analytical chemistry
General Physics and Astronomy
chemistry.chemical_element
02 engineering and technology
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
0104 chemical sciences
Erbium
chemistry
Excited state
Dysprosium
Physical and Theoretical Chemistry
0210 nano-technology
Luminescence
Absorption (electromagnetic radiation)
Excitation
Visible spectrum
Subjects
Details
- ISSN :
- 00092614
- Volume :
- 723
- Database :
- OpenAIRE
- Journal :
- Chemical Physics Letters
- Accession number :
- edsair.doi...........81e6fa8518009dbd6cedd0b6333259b8