Dresden 2006 – wissenschaftliches Programm
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HL: Halbleiterphysik
HL 50: Poster II
HL 50.75: Poster
Donnerstag, 30. März 2006, 16:30–19:00, P3
Deposition and epitaxial overgrowth of colloidal nanocrystals on ZnSe surfaces — •Dirk Mügge1, Christof Arens1, Detlef Schikora1, Klaus Lischka1, Oliver Schöps2, Ulrike Woggon2, and Mikhail V. Artemyev3 — 1Dep. Physik, Universität Paderborn, Warburger Str. 100, 33098 Paderborn, Germany — 2FB Physik, Universität Dortmund, Otto-Hahn-Str. 4, 44227 Dortmund, Germany — 3Institute for Physico-Chemical Problems of Belarussian State University, Minsk, Belarus
The incorporation of colloidal Nanocrystals (NCs) in an epitaxial grown ZnSe Matrix is an alternative production technology of Quantum Dot (QD) structures adverse to the self organized Stranski Krastanow (SK) QD growth. The advantages of such hybrid epitaxial-colloidal structures are the production of QD layer with variable QD densities (theoretically from 100 cm−2 to 1014 cm−2) and the possible incorporation of different colloidal NCs into the same QD layer (e.g. different materials, size, shape). The NCs are kept in Pyridine and transmission measurements allow the determination of the absolute NC density in the carrier solvent. We will present optical and structural properties of core(shell) CdSe(ZnS) NCs with different NC densities on epitaxial grown ZnSe surfaces treated by standart deposition technologies (e.g. spin coating, dip coating) and investigations of optical and structural properties of integrated NCs in an epitaxial grown ZnSe Matrix.