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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Official URL: http://apl.aip.org/resource/1/applab/v67/i17/p2506...
Related URL: http://dx.doi.org/10.1063/1.114440
Abstract
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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