Related Experiment Video
Updated: Apr 5, 2026
07:03
Low-energy Cathodoluminescence for OxyNitride Phosphors
Published on: November 15, 2016
11.3K
Multicolor Depth-Resolved Cathodoluminescence from Eu-Doped SiOC Thin Films.
Gabriele Bellocchi1,2, Filippo Fabbri3, Maria Miritello1
1MATIS IMM CNR , via Santa Sofia 64, 95123 Catania, Italy.
ACS Applied Materials & Interfaces
|August 11, 2015
Summary
Europium-doped SiOC films exhibit bright, tunable visible light emission. Controlling electron depth in bilayer films enables high-quality white light for advanced lighting and display applications.
Area of Science:
- Materials Science
- Solid-State Physics
- Luminescence
Background:
- Europium (Eu) doping in silicon oxycarbide (SiOC) films is explored for luminescent properties.
- Room-temperature cathodoluminescence (CL) is a key characterization technique for these materials.
Purpose of the Study:
- To investigate tunable visible light emission from Eu-doped SiOC films.
- To achieve high-quality white light emission for potential display and lighting applications.
Main Methods:
- Fabrication of Eu-doped SiOC films with varying Eu concentrations.
- Room-temperature cathodoluminescence (CL) spectroscopy.
- Depth-resolved CL measurements by varying electron beam energy.
- Nanoscale control of electron penetration depth.
Main Results:
- A bright, room-temperature CL signal tunable across the visible spectrum was observed.
- Continuous tuning of Eu(2+) emission from blue to green was achieved by adjusting Eu concentration and electron energy in a SiOC bilayer.
- High-quality white light emission was obtained through precise control of electron penetration depth.
Conclusions:
- Eu-doped SiOC films offer tunable luminescence properties.
- Bilayer structures and nanoscale electron control are effective for achieving desired emission colors, including white light.
- SiOC film compatibility with silicon technology suggests potential for integrated lighting and display devices.
