Abstract
We report a direct observation of quantum dots formed spontaneously in a thick InGaN epilayer by high resolution transmission electron microscopy. Investigation of a (280 nm thick) In0.22Ga0.78N single layer, emitting in the blue/green spectral region, reveals quantum dots with estimated sizes in the range of 1.5-3 nm. Such sizes are in very good agreement with calculations based on the luminescence spectra of this specimen.
Original language | English |
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Pages (from-to) | 507-509 |
Number of pages | 3 |
Journal | Applied Physics Letters |
Volume | 77 |
Issue number | 4 |
DOIs | |
Publication status | Published - 24 Jul 2000 |
Keywords
- quantum dots
- InGaN epilayers
- luminescence spectra