Surface Transformation and Photoinduced Recovery in CdSe Nanocrystals
- 2 April 2001
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 86 (14) , 3132-3135
- https://doi.org/10.1103/physrevlett.86.3132
Abstract
CdSe nanocrystals in solution and films can enter a metastable state in which the highly luminescent nanocrystals become dark. This change, which we attribute to a surface transformation, can be caused by heating or by changing the environment of the nanocrystals at room temperature. The metastable transformation is reversed upon illumination of above-band-gap light, at which point the nanocrystals are again highly luminescent.Keywords
This publication has 20 references indexed in Scilit:
- Structural Disorder in Colloidal InAs and CdSe Nanocrystals Observed by X-Ray Absorption Near-Edge SpectroscopyPhysical Review Letters, 1999
- (CdSe)ZnS Core−Shell Quantum Dots: Synthesis and Characterization of a Size Series of Highly Luminescent NanocrystallitesThe Journal of Physical Chemistry B, 1997
- Preparation and termination of well-defined CdTe(100) and Cd(Zn)Te(100) surfacesApplied Physics Letters, 1997
- Fluorescence intermittency in single cadmium selenide nanocrystalsNature, 1996
- Perspectives on the Physical Chemistry of Semiconductor NanocrystalsThe Journal of Physical Chemistry, 1996
- Synthesis and Characterization of Strongly Luminescing ZnS-Capped CdSe NanocrystalsThe Journal of Physical Chemistry, 1996
- X-ray Photoelectron Spectroscopy of CdSe Nanocrystals with Applications to Studies of the Nanocrystal SurfaceThe Journal of Physical Chemistry, 1994
- Synthesis and characterization of nearly monodisperse CdE (E = sulfur, selenium, tellurium) semiconductor nanocrystallitesJournal of the American Chemical Society, 1993
- Models of Hierarchically Constrained Dynamics for Glassy RelaxationPhysical Review Letters, 1984
- Dispersion of relaxation rates in dense liquids and glassesPhysical Review B, 1981