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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/120

Title: Improved infrared photoluminescence characteristics from circularly ordered self-assembled Ge islands
Authors: Das, Samaresh
Das, Kaustuv
Singha, Raj Kumar
Manna, Santanu
Dhar, Achintya
Ray, Samit K
Raychaudhuri, Arup K
Issue Date: 2011
Publisher: Nanoscale Research Letters
Citation: S. Das, K. Das, R. K. Singha, S. Manna, A. Dhar, S. K. Ray and A. K. Raychaudhuri, Improved infra-red photoluminescence characteristics from circularly ordered self-assembled Ge islands, Nanoscale Research Letters, 2011, 6, 416
Abstract: The formation of circularly ordered Ge-islands on Si(001) has been achieved because of nonuniform strain field around the periphery of the holes patterned by focused ion beam in combination with a self-assembled growth using molecular beam epitaxy. The photoluminescence (PL) spectra obtained from patterned areas (i.e., ordered islands) show a significant signal enhancement, which sustained till 200 K, without any vertical stacking of islands. The origin of two activation energies in temperature-dependent PL spectra of the ordered islands has been explained in detail.
URI: http://hdl.handle.net/123456789/120
Appears in Collections:2011

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