Two-dimensional GaN films and ribbons have been synthesized within Na-4 mica nanochannels. The thickness of the films is 0.6 nm as estimated from published x-ray diffraction data of Na-4 mica. Room temperature photoluminescence studies show a blue shift in bandgap which is ascribed to the quantum confinement effect. Unusually long excitonic lifetimes in these 2D systems appear to indicate low density of defects.
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Acoustics and Ultrasonics
- Surfaces, Coatings and Films