Ge quantum dot lattices in Al2O3 multilayers (CROSBI ID 191047)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Buljan, Maja ; Radić, Nikola ; Ivanda, Mile ; Bogdanović-Radović, Ivančica ; Karlušić, Marko ; Grenzer, Joerg ; Prucnal, Slawomir ; Dražić, Goran ; Pletikapić, Galja ; Svetličić, Vesna ; Jerčinović, Marko ; Bernstorff, Sigrid ; Holy, Vaclav
engleski
Ge quantum dot lattices in Al2O3 multilayers
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 + Al2O3)/Al2O3 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.
Ge quantum dots; GISAXS; Photoluminescence; Self-assembly; Al2O3
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Podaci o izdanju
15
2013.
1485-1-1485-13
objavljeno
1388-0764
10.1007/s11051-013-1485-9