White luminescence from silica glass containing red/green/blue luminescent nanocrystalline silicon particles
- Quantum Beam Center, National Institute for Materials Science, 3-13 Sakura, Tsukuba, Ibaraki 305-0003 (Japan)
Silica glasses containing blue/green/red luminescent nanocrystalline silicon (nc-Si) particles that consist of monolayer and/or three-layer structures were fabricated by a radio-frequency sputtering technique and postannealing treatment. These silica glasses showed very broad luminescence spectra with a peak at 460 nm (blue light), 550 nm (green light), and 800 nm (red light). When these samples were irradiated by using a xenon lamp with an optical bandpass filter of 313 nm, the luminescence colors from these silica glasses were a white light. The white luminescence of the sample with the three-layer structure exhibited the high luminance value of 1.5 cd/m{sup 2}. This value was ascribed to the adjustment of sizes and densities of blue/green/red luminescent nc-Si particles, and the lowering of densities of P{sub b} centers (nonradiative recombination centers) at the nc-Si particle/silica glass interface layer.
- OSTI ID:
- 21064453
- Journal Information:
- Journal of Applied Physics, Vol. 102, Issue 10; Other Information: DOI: 10.1063/1.2811920; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ANNEALING
CRYSTALS
DEPOSITION
GLASS
LAYERS
NANOSTRUCTURES
PARAMAGNETISM
PARTICLES
PHOTOLUMINESCENCE
PHYSICAL RADIATION EFFECTS
RADIOWAVE RADIATION
RECOMBINATION
RESONANCE PARTICLES
SEMICONDUCTOR MATERIALS
SILICA
SILICON
SPUTTERING
TRANSMISSION ELECTRON MICROSCOPY
VISIBLE RADIATION
XENON