Exciton Transfer in Array of Epitaxially Connected Nanocrystals

Konstantin V. Reich, Boris I. Shklovskii

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

Recently, epitaxially connected at facets semiconductor nanocrystals (NCs) have been introduced to fascilitate the electron transport between nanocrystals. To fully deploy their potential, a better understanding of the exciton transfer between connected NCs is needed. We go beyond the two well-known transfer mechanisms suggested by Förster and Dexter and propose a third mechanism of exciton tandem tunneling. The tandem tunneling occurs through the intermediate state in which the electron and hole are in different NCs. The corresponding rate for exciton hops is larger than the Dexter rate and for Si is even much larger that the Förster one.

Original languageEnglish (US)
Pages (from-to)10267-10274
Number of pages8
JournalACS nano
Volume10
Issue number11
DOIs
StatePublished - Nov 22 2016

Bibliographical note

Funding Information:
We are grateful to A. V. Chubukov, P. Crowell, Al. L. Efros, H. Fu, R. Holmes, A. Kamenev, U. R. Kortshagen, A. V. Rodina, I. Rousochatzakis, M. Sammon, B. Skinner, M.V. Voloshin, D. R. Yakovlev, and I. N. Yassievich for helpful discussions. This work was supported primarily by the National Science Foundation through the University of Minnesota MRSEC under Award No. DMR-1420013

Keywords

  • Dexter mechanism
  • energy transfer
  • epitaxially connected nanocrystals
  • exciton
  • Förster mechanism
  • nanocrystals

How much support was provided by MRSEC?

  • Primary

Reporting period for MRSEC

  • Period 3

PubMed: MeSH publication types

  • Journal Article

Fingerprint Dive into the research topics of 'Exciton Transfer in Array of Epitaxially Connected Nanocrystals'. Together they form a unique fingerprint.

Cite this