Abstract
The interdiffusion effects on the band alignment of the GeSi dots embedded in Si matrix were studied by temperature- and excitation-power-dependent photoluminescence measurements. A different power-dependent behavior of the photoluminescence for the as-grown and the annealed samples was observed. It was suggested that the band alignments of the dots changed from type II to type I after annealing due to the Ge/Si interdiffusion. The decrease of the valence band offset, which was also induced by the Ge/Si interdiffusion, was observed from the temperature-dependent photoluminescence measurements.
Original language | English |
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Pages (from-to) | 1980-1982 |
Number of pages | 3 |
Journal | Applied Physics Letters |
Volume | 79 |
Issue number | 13 |
DOIs | |
Publication status | Published - 2001 Sept 24 |
All Science Journal Classification (ASJC) codes
- Physics and Astronomy (miscellaneous)