Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 725, Issue -, Pages 1077-1083Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2017.07.262
Keywords
Nanocrystals; Ag-In-Zn-S; Mn doping; Optical properties
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Funding
- National Institute of Health [P20GM103650-5248]
- InNEVenture Fund
- NSF [CHE-01363325]
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In this work, Mn doped AIZS/ZnS (Mn:AIZS/ZnS) nanocrystals (NCs) have been synthesized in an approach using heat-up and drop-wise addition of precursors. On the basis of the characterization of these doped NCs on their optical properties and materials, it is found that: (1) as more Mn atoms are doped into NCs, the doped NCs present photoluminescence (PL) red-shift and quantum yield quenching; (2) the doped NCs possess a short PL lifetime in tens of microseconds and a long PL lifetime in hundreds of microseconds, and the short lived PL is more dominant than the long lived one; and (3) the doped NCs present a reversible PL thermal quenching in a range from room temperature to 170 degrees C. Possible PL mechanisms of these NCs were discussed by analyzing their time-resolved PL spectra and thermal stability. (C) 2017 Elsevier B.V. All rights reserved.
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