Synthesis of High Quality Zinc Blende CdSe Nanocrystals
- 5 May 2005
- journal article
- letter
- Published by American Chemical Society (ACS) in The Journal of Physical Chemistry B
- Vol. 109 (21) , 10533-10537
- https://doi.org/10.1021/jp051123e
Abstract
Highly homogeneous and luminescent CdSe colloidal nanocrystals in the less common zinc blende crystal structure have been obtained at high temperature in a noncoordinating organic solvent. The key parameter appears to be the addition of a phosphonic acid to the trioctylphosphine−selenium complex before its injection into the hot cadmium mixture, while the role of temperature is less relevant. Compared to standard (wurtzite) colloidal CdSe preparations, we find that the growth rate is considerably reduced, and the energy gap between the first two absorption bands becomes larger.Keywords
This publication has 35 references indexed in Scilit:
- On the Excitation Wavelength Dependence of the Luminescence Yield of Colloidal CdSe Quantum DotsNano Letters, 2004
- Colloidal nanocrystal heterostructures with linear and branched topologyNature, 2004
- Shape control and applications of nanocrystalsPhilosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2002
- Formation of High-Quality CdS and Other II-VI Semiconductor Nanocrystals in Noncoordinating Solvents: Tunable Reactivity of MonomersAngewandte Chemie International Edition in English, 2002
- Highly Luminescent Monodisperse CdSe and CdSe/ZnS Nanocrystals Synthesized in a Hexadecylamine−Trioctylphosphine Oxide−Trioctylphospine MixtureNano Letters, 2001
- Mechanisms of the Shape Evolution of CdSe NanocrystalsJournal of the American Chemical Society, 2001
- Size and shape controlled ZnTe nanocrystals with quantum confinement effectChemical Communications, 2000
- Erratum: Shape Change as an Indicator of Mechanism in the High-Pressure Structural Transformations of CdSe Nanocrystals [Phys. Rev. Lett. 84, 923 (2000)]Physical Review Letters, 2000
- Measurement and assignment of the size-dependent optical spectrum in CdSe quantum dotsPhysical Review B, 1996
- Semiconductor Clusters, Nanocrystals, and Quantum DotsScience, 1996