Evaluation of dopant energy and Stokes shift in Cu-doped CdS quantum dots: Via spectro-electrochemical probing

Amar Nath Yadav, Ashwani Kumar Singh, Deepika Chauhan, Pratima R. Solanki, Pramod Kumar, Kedar Singh

Research output: Contribution to journalArticlepeer-review

21 Scopus citations

Abstract

Copper (Cu) doped II-VI semiconductor quantum dots (QDs) manifest high luminescent dopant emission with excellent tunability. The Cu-doped II-VI QDs have been well studied via optical spectroscopy; nevertheless, the electrochemical study on doped QDs where the signals are traced to discover the absolute energies of dopant and band-edges of the host is rarely investigated. Herein, we have estimated these energies in 2 nm Cu-doped CdS QDs via cyclic voltammetry (CV). The CV graph of doped QDs revealed a specific intragap state where the redox potential is near to the Cu energy state. The observed results from the CV analysis were well correlated with optical spectra.

Original languageEnglish
Pages (from-to)13529-13533
Number of pages5
JournalNew Journal of Chemistry
Volume44
Issue number32
DOIs
StatePublished - 28 Aug 2020
Externally publishedYes

Bibliographical note

Publisher Copyright:
© The Royal Society of Chemistry and the Centre National de la Recherche Scientifique.

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