Ligand Effects on Optical Properties of CdSe Nanocrystals
Top Cited Papers
- 22 March 2005
- journal article
- research article
- Published by American Chemical Society (ACS) in The Journal of Physical Chemistry B
- Vol. 109 (15), 7012-7021
- https://doi.org/10.1021/jp045352x
Abstract
We report effects of various organic and inorganic ligands on optical properties of CdSe nanocrystals (NCs) by changes in their photoluminescence and absorbance spectra. Surface ligand loss occurring during dilution and purification of solutions of CdSe NCs leads to a decrease of photoluminescence intensity. The complex of trioctylphosphine with Se atoms on the surface of CdSe NCs is found responsible for the trap emission band that is red-shifted relative to the photoluminescence band edge.Keywords
This publication has 48 references indexed in Scilit:
- Surface Treatment to Enhance the Quantum Efficiency of Semiconductor NanocrystalsThe Journal of Physical Chemistry B, 2004
- Small Is Different: Shape-, Size-, and Composition-Dependent Properties of Some Colloidal Semiconductor NanocrystalsAccounts of Chemical Research, 2004
- An Amphiphilic Approach to Nanocrystal Quantum Dot−Titania NanocompositesJournal of the American Chemical Society, 2003
- Thermodynamic and Kinetic Characterization of the Interaction between N-Butylamine and ∼1 nm CdSe NanoparticlesThe Journal of Physical Chemistry A, 2002
- Synthesis and Properties of Biocompatible Water-Soluble Silica-Coated CdSe/ZnS Semiconductor Quantum DotsThe Journal of Physical Chemistry B, 2001
- 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
- Surfactant−Semiconductor Interfaces: Perturbation of the Photoluminescence of Bulk Cadmium Selenide by Adsorption of Tri-n-octylphosphine Oxide as a Probe of Solution Aggregation with Relevance to Nanocrystal StabilizationJournal of the American Chemical Society, 1998
- X-ray Photoelectron Spectroscopy of CdSe Nanocrystals with Applications to Studies of the Nanocrystal SurfaceThe Journal of Physical Chemistry, 1994
- Surface effects on the optical properties of cadmium selenide quantum dotsThe Journal of Physical Chemistry, 1993