Influence of manganese doping on the luminescence characteristics of colloidal ZnxCd1−xS quantum dots in gelatin

Colloidal pure and Mn-doped mixed ZnxCd1−xS quantum dots were successfully prepared by aqueous synthesis in photographic inert gelatin. Quantum dots are formed in a cubic crystal lattice with the average size of about 2nm. Two emission bands in photoluminescence spectra of Mn-doped quantum dots are...

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Bibliographic Details
Published inJournal of luminescence Vol. 192; pp. 893 - 901
Main Authors Klyuev, V.G., Volykhin, D.V., Smirnov, M.S., Dubovitskaya, N.S.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.12.2017
Subjects
Aqueous synthesis
Cadmium sulfide
Luminescence
Manganese
Quantum dots
Zinc sulfide
Zinc sulfide
Cadmium sulfide
Quantum dots
Aqueous synthesis
Luminescence
Manganese
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Summary:Colloidal pure and Mn-doped mixed ZnxCd1−xS quantum dots were successfully prepared by aqueous synthesis in photographic inert gelatin. Quantum dots are formed in a cubic crystal lattice with the average size of about 2nm. Two emission bands in photoluminescence spectra of Mn-doped quantum dots are observed: trap state luminescence and Mn characteristic emission. The possibility of Mn-doped quantum dots spectral characteristics tuning by changing the synthesis conditions is shown. It is shown that value of trap state – Mn ion excitation transfer efficiency in mixed ZnxCd1−xS:Mn quantum dots is about 24–30%.
ISSN:0022-2313
1872-7883
DOI:10.1016/j.jlumin.2017.08.023