Abstract
Abstract Monovalent copper ions effectively incorporated in Nd-containing phosphate glass by a single-step melt-quench method have been established as near-ultraviolet (UV) sensitizers of Nd3+ ions, resulting in a remarkable 4F3/2 → 4I11/2 emission at 1.06 μm. The spectroscopic data indicates an efficient energy conversion process. The Cu+ ions first absorb photons broadly around 360 nm, and subsequently transfer the energy from the Stokes-shifted emitting states to resonant Nd3+ energy levels in the visible. Ultimately, the Nd3+ electronic excited states decay and the upper lasing state 4F3/2 is populated, leading to the enhanced emission at 1.06 μm. The characteristic features of the Cu+ visible emission spectra and the reduced lifetime of the corresponding Cu+ donor states indicate an efficient non-radiative transfer. The Cu+/Nd3+ co-doped phosphate glass appears suitable as solid-state laser material with enhanced pump range in the near-UV part of the spectrum and for solar spectral conversion in photovoltaic cells.
Original language | English |
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Article number | 18186 |
Pages (from-to) | 425-430 |
Number of pages | 6 |
Journal | Materials Chemistry and Physics |
Volume | 162 |
DOIs | |
State | Published - Jul 15 2015 |
Scopus Subject Areas
- General Materials Science
- Condensed Matter Physics
Keywords
- Glasses
- Optical materials
- Photoluminescence spectroscopy