Measurement and assignment of the size-dependent optical spectrum in CdSe quantum dots

D. J. Norris and M. G. Bawendi
Phys. Rev. B 53, 16338 – Published 15 June 1996
PDFExport Citation

Abstract

We use photoluminescence excitation to study the electronic spectrum of CdSe quantum dots ranging from ∼12 to ∼53 Å in radius. We follow the size evolution of ten quantum dot absorption features. Comparison of the spectra with theoretical predictions allows us to confidently assign six of these transitions. We discuss the most likely assignments for the remaining four. We find that the nhS3/21Se and nhS1/21Se transitions dominate the spectra, accounting for half of the observed features. Our size-dependent data exhibit two strong avoided crossings, demonstrating the importance of valence-band structure in the description of the excited states. © 1996 The American Physical Society.

  • Received 2 March 1995

DOI:https://doi.org/10.1103/PhysRevB.53.16338

©1996 American Physical Society

Authors & Affiliations

D. J. Norris and M. G. Bawendi

  • Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139

References (Subscription Required)

Click to Expand
Issue

Vol. 53, Iss. 24 — 15 June 1996

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review B

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×