Fluorescence of ZnTe Quantum Dots Prepared Through Chemical Route

被引：0
作者：
Baruah, Lalit [1 ]
Avasthi, Debesh K. [2 ]
Nath, Siddhartha S. [3 ]
机构：
[1] Deptt. Of Physics, Assam University, Silchar
[2] Material Science, IUAC, New Delhi
[3] Central Instrumentation Laboratory (CIL)
来源：
Nath, Siddhartha S. (snath12@ymail.com) | 1600年 / Bentham Science Publishers卷 / 04期
关键词：
Chemical route; Fluorescence; Quantum dots; ZnTe;
D O I：
10.2174/22106812113036660014
中图分类号：
学科分类号：
摘要：
The room-temperature fluorescence spectroscopy of zinc telluride quantum dots is investigated. ZnTe quantum dots are synthesized by a chemical route in ethylene glycol with different reactant concentrations and reaction temperatures. Prepared samples are characterized by X-ray diffractometry (XRD) and high resolution transmission electron microscopy. XRD investigation shows the cubic structured ZnTe nanoparticles. The size measurement shows an approximate size of 4-12 nm quantum dots. UV-Vis absorption spectroscopy shows the size-quantization effect and the band gap energy increases by an amount 2.16 eV of the quantum dots. Furthermore as the chemical parameters change, the size of quantum dot changes systemically and the fluorescence peak is observed in 554 nm – 585 nm. © 2014 Bentham Science Publishers.
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页码：45 / 48
页数：3
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  • [1] Dmitri V.T., Murray C.B., PbSe Nanocrystal Solids for n- and p- Channel Thin Film Field-Effect Transistors, Science, 310, pp. 86-89, (2005)
  • [2] Mews A., Eychmuller A., Giersig M., Schoos D., Weller H., Preparation, characterization, and photophysics of the quantum dot quantum well system cadmium sulfide/mercury sulfide/cadmium sulphide, J. Phys. Chem., 98, (1994)
  • [3] Nath S.S., Chakdar D., Gope G., Avasthi D.K., Luminescence spectroscopy of silica coated ZnS quantum dots embedded in PVA matrix, International Journal of Nanotechnology and Applications, 2, (2008)
  • [4] Mikoshiba S., Murai S., Sumino H., Kado T., Kosugi D., Hayase S., Ionic liquid type dye-sensitized solar cells: Increases in photovoltaic performances by adding a small amount of water, Current Applied Physics, 5, pp. 152-158, (2005)
  • [5] Yang H., Paul H., Enhanced photoluminescence from CdS:Mn/ZnS core/shell quantum dots, Appl. Phys. Lett, 82, (2003)
  • [6] Daniel M.C., Astruc D., Gold nanoparticles: Assembly, supramolecular chemistry, quantum-size-related properties, and applications toward biology, catalysis, and nanotechnology, Chem. Rev, 104, pp. 293-346, (2004)
  • [7] Dwivedi D.K., Dayashankar A., Dubey M., Synthesis, characterization and electrical properties of ZnTe nanoparticles, Journal of Ovonic Research, 5, pp. 35-41, (2009)
  • [8] Deng Z., Li C., Tang F., Zou B.A., New Route to Zinc-Blende CdSe Nanocrystals: Mechanism and Synthesis, J. Phys. Chem. B, 109, pp. 16671-16675, (2005)
  • [9] Dey S.C., Nath S.S., Bhattacherjee R., Optical properties of colloidal CdSe quantum dots, Micro and Nano Lett, 6, pp. 113-115, (2011)
  • [10] Nath S.S., Chakdar D., Gope G., Novel effect of 100 MeV Ni+7 ion beam on ZnS quantum dots prepared by chemical methods, J. Of Nanotechnology, 2, 1, (2008)
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