Manganese doped zinc sulphide nanoparticles by aqueous method

Khosravi, Ali Azam ; Kundu, Manisha ; Kuruvilla, Beena Annie ; Shekhawat, G. S. ; Gupta, R. P. ; Sharma, A. K. ; Vyas, P. D. ; Kulkarni, S. K. (1995) Manganese doped zinc sulphide nanoparticles by aqueous method Applied Physics Letters, 67 (17). pp. 2506-2508. ISSN 0003-6951

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Zinc sulphide nanoparticles in the size range ~10-40 Å diameter have been synthesized using the aqueous chemical method. Scanning tunneling microscopy showed that particles are indeed nanosize particles. The size dependent band gap could be varied from a bulk value of 3.68 to 4.5 eV. X-ray diffraction indicated that nanoparticles are crystalline except for those with band gap ~4.5±0.1 eV. Nanoparticles with particle size ~21×2 Å diameter or energy gap 4.1×0.1 eV were doped with manganese. The photoluminescence peak at ~600 nm corresponding to yellow light emission was observed. Atomic absorption studies show that maximum luminescence intensity is achievable with 0.12 at.wt % of Mn doping.

Item Type:Article
Source:Copyright of this article belongs to American Institute of Physics.
Keywords:Doped Materials; Energy Gap; Manganese Additions; Nanostructures; Photoluminescence; Quantum Dots; Size Effect; STM; Zinc Sulfides
ID Code:18021
Deposited On:17 Nov 2010 13:19
Last Modified:04 Jun 2011 09:01

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