| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 10642316 | Physica E: Low-dimensional Systems and Nanostructures | 2005 | 6 Pages |
Abstract
Spectroscopic analyses on stacked Ge quantum dots (QDs) on Si (1Â 0Â 0) substrates are presented. Strong and visible photoluminescence around 620Â nm from stacked Ge QDs is observed. The luminescence is intense and clearly visible to the naked eye at both room temperature and low temperature. We have investigated the temperature dependence of the luminescence, as well as the composition of Ge dots via transmission electron microscopy and the Raman spectroscopy. Possible causes of the visible luminescence are also speculated in this report.
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
K.W. Sun, S.H. Sue, C.W. Liu,