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- Title
THE EFFECT OF LOW TEMPERATURE COATING AND ANNEALING ON STRUCTURAL AND OPTICAL PROPERTIES OF CdSe/CdS CORE/SHELL QDs.
- Authors
Isarov, M.; Grumbach, N.; Maikov, G. I.; Tilchin, J.; Jang, Y.; Sashchiuk, A.; Lifshitz, E.
- Abstract
This paper presents the optical temperature dependent properties, over a wide range of temperatures from 4 to 300 K, of new CdSe/CdS core/shell colloidal quantum dots (QDs) with varying shell thickness coated and annealed at low temperature. It was demonstrated that low temperature coating and annealing processes enhanced the photoluminescence (PL) quantum yield accompanied by variation in the QDs structure, formation of an alloyed interface layer, suppression of the number of defects at the CdSe/CdS interface, band gap energy red-shift, narrowing of CdS longitudinal optical phonon band, and decrease of the PL inhomogeneous broadening parameter.
- Subjects
LOW temperature physics; SURFACE coatings; OPTICAL properties of cadmium selenide; ANNEALING of metals; QUANTUM dots
- Publication
Lithuanian Journal of Physics, 2015, Vol 55, Issue 4, p297
- ISSN
1648-8504
- Publication type
Article