Abstract
Growth and properties of self-organized CdSe quantum dots (SQDs) grown by atomic layer epitaxy (ALE) on the atomically flat surface of (111)A ZnSe buffer layers have been investigated. We observe formation of dots at nominal layer thicknesses well below the critical thickness of the CdSe, a strong indication for coherent Stranski-Krastanow islanding. When the number of ALE cycles is increased the average dot size remains unchanged, instead the density is increased. Rather uniform base diameters (47±5 nm) are observed. The morphology of the buffer layers, dot structures and optical properties of the SQDs will be discussed.
| Original language | English |
|---|---|
| Pages (from-to) | 93-98 |
| Number of pages | 6 |
| Journal | Molecular Crystals and Liquid Crystals Science and Technology Section B: Nonlinear Optics |
| Volume | 18 |
| Issue number | 2-4 |
| Publication status | Published - 1997 Dec 1 |
| Event | Proceedings of the 1997 International Symposium on Quantum Structures for Photonic Applications, QSPA'97 - Sendai, Jpn Duration: 1997 Mar 6 → 1997 Mar 8 |
ASJC Scopus subject areas
- Control and Systems Engineering
- Condensed Matter Physics