White luminescence from silica glass containing red/green/blue luminescent nanocrystalline silicon particles

Journal Article · Thu Nov 15 04:00:00 EST 2007 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.2811920· OSTI ID:21064453

Sato, Keisuke; Kishimoto, Naoki; Hirakuri, Kenji ^[1]

---

1. 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, Journal Name: Journal of Applied Physics Journal Issue: 10 Vol. 102; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
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