Related Experiment Video
Updated: Feb 3, 2026

Production and Targeting of Monovalent Quantum Dots
Published on: October 23, 2014
Influence of the KBr matrix on the luminescence properties of CdTe quantum dots
Galyna Okrepka1,2, Yuriy Khalavka2, Yulia Seti3
1Higher state educational establishment of Ukraine 'Bukovinian State Medical University', 2, Theatralna sq., Chernivtsi, Ukraine.
Abstract:
The investigation of the luminescence properties of CdTe/KBr composites with encapsulated quantum dots (QDs) of different sizes was performed and the influence of the KBr matrix on the luminescence properties of CdTe QDs was studied. Encapsulation of nanoparticles by a solid matrix caused a bathochromic shift in the luminescence peak and the shift value was the larger the smaller the size of the quantum dots. Interband quantum transition theory was used to explain the influence of the matrix on the luminescence properties of the capsulated CdTe QDs. Theoretical calculations showed that the observed QD luminescence peak corresponded to a 1 s-1 s electronic transition, and its low-energy shift after the transfer of QDs from dielectric water to the KBr matrix was due to a corresponding decrease in the depths of electrons and holes potential wells.
Related Concept Videos
Quantum Numbers
The Quantum-Mechanical Model of an Atom
The Extracellular Matrix
Dot Product
In engineering, the dot product of any two vectors is the product of the magnitudes of the vectors and the cosine of the angle between them. It is denoted by a dot symbol between the two vectors.
Consider a vehicle pulling an object along the ground using a rope. If the rope makes an angle with the horizontal axis, the work done can be calculated using the dot product of the force applied and the object's displacement.
The dot...
The Dot Product
Properties of Transition Metals

