Abstract
We collect and spectrally resolve photoluminescence from single CdSe nanocrystallite quantum dots. The elimination of spectral inhomogeneities reveals resolution limited spectral linewidths ( $<120\ensuremath{\mu}\mathrm{eV}$ at 10 K) more than 50 times narrower than expected from ensemble measurements. Light driven spectral diffusion is observed as a form of power broadening. These studies confirm the atomiclike nature of the emitting state in CdSe nanocrystallites.
Keywords
PhotoluminescenceQuantum dotSpectroscopyMaterials scienceDiffusionResolution (logic)OptoelectronicsCondensed matter physicsMolecular physicsPhysicsQuantum mechanics
Affiliated Institutions
Related Publications
Structure and Dynamics in Solids As Probed by Optical Spectroscopy
Optical spectroscopy provides a useful tool for probing the structure and dynamics of solids. Over the years, optical methods have evolved from absorption spectroscopy to more c...
Photoluminescence wandering in single CdSe nanocrystals
Low temperature two-photon fluorescence excitation microscopy was used to obtain fluorescence spectra of single CdSe colloidal nanocrystals or quantum dots. The fluorescence spe...
Optical Spectroscopy of Single Impurity Molecules in Solids
Abstract Optical spectroscopy of a single impurity molecule provides the first truly local probe of host–guest interactions in doped solids. In conventional optical high‐resolut...
Superresolution by localization of quantum dots using blinking statistics
In microscopy, single fluorescence point sources can be localized with a precision several times greater than the resolution limit of the microscope. We show that the intermitte...
Quantum Dots for Live Cells, in Vivo Imaging, and Diagnostics
Research on fluorescent semiconductor nanocrystals (also known as quantum dots or qdots) has evolved over the past two decades from electronic materials science to biological ap...
Publication Info
- Year
- 1996
- Type
- article
- Volume
- 77
- Issue
- 18
- Pages
- 3873-3876
- Citations
- 727
- Access
- Closed
External Links
Social Impact
Altmetric
PlumX Metrics
Social media, news, blog, policy document mentions
Citation Metrics
727
OpenAlex
9
Influential
661
CrossRef
Cite This
S. A. Empedocles,
David J. Norris,
Moungi G. Bawendi
(1996).
Photoluminescence Spectroscopy of Single CdSe Nanocrystallite Quantum Dots.
Physical Review Letters
, 77
(18)
, 3873-3876.
https://doi.org/10.1103/physrevlett.77.3873
Identifiers
- DOI
- 10.1103/physrevlett.77.3873
- PMID
- 10062330