Semiconductor quantum dot-inorganic nanotube hybrids

Ronen Kreizman, Osip Schwartz, Zvicka Deutsch, Stella Itzhakov, Alla Zak, Sidney R. Cohen, Reshef Tenne, Dan Oron

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

A synthetic route for preparation of inorganic WS 2 nanotube (INT)-colloidal semiconductor quantum dot (QD) hybrid structures is developed, and transient carrier dynamics on these hybrids are studied via transient photoluminescence spectroscopy utilizing several different types of QDs. Measurements reveal efficient resonant energy transfer from the QDs to the INT upon photoexcitation, provided that the QD emission is at a higher energy than the INT direct gap. Charge transfer in the hybrid system, characterized using QDs with band gaps below the INT direct gap, is found to be absent. This is attributed to the presence of an organic barrier layer due to the relatively long-chain organic ligands of the QDs under study. This system, analogous to carbon nanotube-QD hybrids, holds potential for a variety of applications, including photovoltaics, luminescence tagging and optoelectronics. This journal is

Original languageEnglish
Pages (from-to)4271-4275
Number of pages5
JournalPhysical Chemistry Chemical Physics
Volume14
Issue number12
DOIs
Publication statusPublished - Mar 28 2012

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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  • Cite this

    Kreizman, R., Schwartz, O., Deutsch, Z., Itzhakov, S., Zak, A., Cohen, S. R., Tenne, R., & Oron, D. (2012). Semiconductor quantum dot-inorganic nanotube hybrids. Physical Chemistry Chemical Physics, 14(12), 4271-4275. https://doi.org/10.1039/c2cp24043b