Journal
SCIENCE
Volume 324, Issue 5933, Pages 1425-1428Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1172419
Keywords
-
Categories
Funding
- Diamond Research Center, AIST
- Technical Research Institute
- Japan Society for the Promotion of Machine Industry
- Grants-in-Aid for Scientific Research [21360155] Funding Source: KAKEN
Ask authors/readers for more resources
Confinement of charge carriers in semiconductors by quantum wells is usually accomplished with layers that vary in elemental composition, such as aluminum gallium arsenide and gallium arsenide. We fabricated diamond superlattices by creating multilayer structures of isotopically pure carbon isotopes carbon-12 ((12)C) and carbon-13 ((13)C), which confine electrons by a difference in band-gap energy of 17 millielectron volts. Cathodoluminescence experiments performed at 80 kelvin showed that excitonic recombination in the higher-energy band of (13)C vanishes in favor of increased recombination in the lower-energy (12)C material. Carrier confinement was achieved in diamond superlattices made up of both thinner (30 nanometers) and thicker (up to 350 nanometers) layers.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available