Abstract
The factors limiting the efficiency of Er3+ luminescence at 1.54 μm (0.8 eV) in erbium-doped barium titanate films were studied. To investigate the effect of film stoichiometry on luminescence efficiency films were annealed in oxygen and in vacuum. For films annealed in oxygen at temperatures of 700-900 °C a nominal increase in the luminescence efficiency was observed. Vacuum annealing resulted in strong quenching of the emission intensity. Transient photoluminescence measurements showed that the emission lifetime also decreased for the reduced films. This effect was reversible; upon oxygen annealing both the emission intensity and lifetime were restored to their original values. These results indicate that the Er3+ luminescence efficiency strongly depends on film stoichiometry.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 15-20 |
| Number of pages | 6 |
| Journal | Materials Research Society Symposium - Proceedings |
| Volume | 597 |
| State | Published - 2000 |
| Event | Thin Films for Optical Waveguide Devices and Materials for Optical Limiting - Boston, MA, USA Duration: Nov 30 1999 → Dec 3 1999 |
ASJC Scopus subject areas
- General Materials Science
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering