Temperature-dependent brightening and darkening of photoluminescence from PbS quantum dots in glasses
Open Access
- 11 June 2007
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 90 (24), 241111
- https://doi.org/10.1063/1.2748849
Abstract
The authors report that the darkening and brightening of photoluminescence from PbS quantum dots can be controlled by adjusting the temperature and excitation intensity. Intensity of the photoluminescence from PbS quantum dots increased with time (photobrightening) when temperature was below . On the other hand, darkening was observed at temperatures above . It was also possible to make a reversible change between photobrightening and photodarkening from the same specimen through the careful control of the temperature and excitation intensity.
Keywords
This publication has 15 references indexed in Scilit:
- Photobrightening and photodarkening in PbS quantum dotsPhysical Chemistry Chemical Physics, 2006
- Highly Efficient Multiple Exciton Generation in Colloidal PbSe and PbS Quantum DotsNano Letters, 2005
- Tunable Near-Infrared Optical Gain and Amplified Spontaneous Emission Using PbSe NanocrystalsThe Journal of Physical Chemistry B, 2003
- 1.3 μm to 1.55 μm Tunable Electroluminescence from PbSe Quantum Dots Embedded within an Organic DeviceAdvanced Materials, 2003
- Photoenhancement of Luminescence in Colloidal CdSe Quantum Dot SolutionsThe Journal of Physical Chemistry B, 2003
- Size-tunable infrared (1000–1600 nm) electroluminescence from PbS quantum-dot nanocrystals in a semiconducting polymerApplied Physics Letters, 2003
- Photo-Activated Luminescence of CdSe Quantum Dot MonolayersThe Journal of Physical Chemistry B, 2000
- Lead Salt Quantum Dots: the Limit of Strong Quantum ConfinementAccounts of Chemical Research, 2000
- Fluorescence intermittency in single cadmium selenide nanocrystalsNature, 1996
- Auger ionization of semiconductor quantum drops in a glass matrixJournal of Luminescence, 1990