2014
DOI: 10.1063/1.4872555
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Size effect on the electronic and optical band gap of CdSe QD

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“…The electrical bandgap is the threshold for the electrons to be added. The electronic gap is usually larger than the optical gap which is due to the difference in the Coulomb energy for the system [7].…”
Section: Introductionmentioning
confidence: 99%
“…The electrical bandgap is the threshold for the electrons to be added. The electronic gap is usually larger than the optical gap which is due to the difference in the Coulomb energy for the system [7].…”
Section: Introductionmentioning
confidence: 99%
“…Semiconductor nanoparticles, known as quantum dots (QDs), are of particular interest because of their size-dependent functional properties. When the size of a particle is small enough, quantum confinement effects dominate, and the material properties can be tuned very finely. For the optical properties in semiconductor materials, such condition arises when the crystal size approaches the Bohr radius of the specific material consideredthat is a few nanometers in the case of many semiconductors of interest . Tailoring the optical, electronic, magnetic, and chemical properties enables a number of technological applications, from biomedicine to photovoltaics to biology, among others. For applications in optical and electronic devices, in particular, size control and uniformity are extremely important; this leads to the need of a reliable control over the evolution of size and of size dispersion, as well as over the composition and the surface ligand chemistry during the synthesis.…”
Section: Introductionmentioning
confidence: 99%