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Volume 25 - ICOP & ICPET 2019
ICOP & ICPET _ INPC _ ICOFS 2019, 25 - ICOP & ICPET 2019: 217-220 |
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Mostafavi meresht F, Saeivar iranizad E, Bayat A. Synthesis and investigation of optical properties of Molybdenum Disulfide quantum dots via hydrothermal method. ICOP & ICPET _ INPC _ ICOFS 2019; 25 :217-220
URL: http://opsi.ir/article-1-1881-en.html
URL: http://opsi.ir/article-1-1881-en.html
1- Department of physics, Tarbiat Modares University, Tehran, Islamic Republic of Iran
Abstract: (2379 Views)
In this study, stable and water-soluble quantum dots of Molybdenum Disulfide were synthesized via a simple bottom-up hydrothermal method by Sodium Molybdate and L-cysteine precursors. The synthesized quantum dots were investigated using the X-Ray diffraction, absorption spectrum, emission spectrum, and atomic force microscopy. Based on photoluminescence spectra, it was shown that the quantum confinement leads to an increase in the band gap of molybdenum disulfide from 1.3 eV for bulk to 3.5 eV for quantum dots. According to the analysis results, the size of these nanocrystals was obtained on average less than 10 nm. The produced quantum dots exhibit blue emission under ultraviolet irradiation. These quantum dots show high intensity and stable fluorescence.
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