Structural, compositional and optical properties of self-organised Ge quantum dots

Authors
Dunbar, A Bangert, U Dawson, P Halsall, M Shiraki, Y Miura, M Berbezier, I Joyce, BA Zhang, J
Citation
A. Dunbar et al., Structural, compositional and optical properties of self-organised Ge quantum dots, PHYS ST S-B, 224(1), 2001, pp. 265-269
Citations number
8
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICA STATUS SOLIDI B-BASIC RESEARCH
ISSN journal
03701972 → ACNP
Volume
224
Issue
1
Year of publication
2001
Pages
265 - 269
Database
ISI
SICI code
0370-1972(200103)224:1<265:SCAOPO>2.0.ZU;2-7
Abstract
In this paper we present a study of the structure, composition and optical properties of SiGe quantum dots, grown by gas-source molecular beam epitaxy on Si (001). Atomic force microscopy (AFM), transmission electron microsco py (TEM). scanning transmission electron microscopy (STEM), energy dispersi ve X-ray analysis (EDX), photoluminescence (PL) spectroscopy and dr cay lim e measurements of the quantum dots suggest that there are two distinct size s of quantum dot, contributing two distinct emission bands in the PL spectr a.