Electrically driven light emission from single colloidal quantum dots at room temperature

Publication Type:

Journal Article

Source:

Appl. Phys. Lett., AIP Publishing, Volume 90, Issue 2, p.023110 (2007)

ISBN:

0003-6951

Keywords:

2007, 2013 and earlier

Abstract:

Light emission from single colloidal Cd Se ∕ Zn S (core/shell) nanocrystals embedded in electrically driven organic light emitting
devices is demonstrated at room temperature. Spectral diffusion and
blinking from individual quantum dots were observed both in electro- and
photoluminescence. The authors propose a model in which the nanocrystals
act as seeds for the formation of current channels that lead to enhanced
exciton recombination in the vicinity of the quantum dots. This work
demonstrates that individual semiconductor nanocrystals can serve as
emissive probes in organic light emitting devices and that they can be
used to manipulate device structure and properties at the nanometer scale.