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- Title
Ge quantum dot lattices in AlO multilayers.
- Authors
Buljan, M.; Radić, N.; Ivanda, M.; Bogdanović-Radović, I.; Karlušić, M.; Grenzer, J.; Prucnal, S.; Dražić, G.; Pletikapić, G.; Svetličić, V.; Jerčinović, M.; Bernstorff, S.; Holý, V.
- Abstract
In this article, we show how to produce materials consisting of regularly ordered Ge quantum dot lattices in an amorphous alumina matrix with a controllable Ge quantum dot size, shape, spacing, crystalline structure, and degree of regularity in their ordering. The production of such materials is achievable already at room temperature by magnetron sputtering deposition of a (Ge + AlO)/AlO multilayer. The materials show photoluminescence in the visible and ultraviolet light range, a size-dependent blue shift of the photoluminescence peak and an enhancement of its intensity by size reduction, indicating the quantum dot origin of the photoluminescence. The materials also exhibit excellent mechanical properties due to the alumina matrix. Their internal structure is shown to be highly resistive to irradiation with energetic particles for a large range of the irradiation parameters.
- Subjects
GERMANIUM alloys; QUANTUM dots; LATTICE field theory; ALUMINUM oxide; CRYSTAL structure; MAGNETRON sputtering; PHOTOLUMINESCENCE; MOLECULAR self-assembly
- Publication
Journal of Nanoparticle Research, 2013, Vol 15, Issue 3, p1
- ISSN
1388-0764
- Publication type
Article
- DOI
10.1007/s11051-013-1485-9