Influence of Polyvinyl Pyrrolidone on Absorption and Radiation Transitions of Mn\(^{2 + }\) ions in Mn-doped ZnS Nanoparticles

Authors

  • Dang Van Thai Hanoi University of Science, Vietnam National University, Hanoi
  • Pham Van Thang Hanoi University of Science, Vietnam National University, Hanoi
  • Pham Van Ben Hanoi University of Science, Vietnam National University, Hanoi
  • Bui Hong Van Hanoi University of Science, Vietnam National University, Hanoi
  • Tran Minh Thi Hanoi National University of Education
  • Hoang Nam Nhat Faculty of Engineering Physics and Nano Technology, University of Engineering and Technology, Vietnam National University, Hanoi

DOI:

https://doi.org/10.15625/0868-3166/25/4/5062

Keywords:

nanoparticles, absorption, photoluminescence, photoluminescence excitation

Abstract

ZnS:Mn nanoparticles were synthesized by co-precipitation method from the precursors solutions of 0.1M Zn(CH\(_{3}\)COO)\(_{2}\), Na\(_{2}\)S and Mn(CH\(_{3}\)COO)\(_{2}\) then were capped with polyvinyl pyrrolidone. The XRD patterns showed that the ZnS:Mn nanoparticles possessed the \(T_d^2 - F4\bar {3}m\) cubic structure with the average crystallite size of several nanometers. At 300~K, the obtained photoluminescence spectra showed only a wide yellow-orange band centered at 603 nm, which should be attributed to the radiation transition of [\(^{4}\)T\(_{1}(^{4}\)G)\( \to ^{6}\)A\(_{1}(^{6}\)S)] of Mn\(^{2 + }\)(3d\(^{5})\) cations in the ZnS matrix. The excitation spectra recorded at 300 K on the other hand featured a strong photoluminescence band around 310-334 nm, which were assigned to the near band-edge absorption transition of ZnS host lattice, in addition with three weaker bands relating to the absorption transitions of [\(^{6}\)A\(_{1}(^{6}\)S) \( \to \) \(^{4}\)T\(_{2}(^{4}\)D)]: 430 nm, [\(^{6}\)A\(_{1}(^{6}\)S) \( \to \) \(^{4}\)A\(_{1}(^{4}\)G) -- \(^{4}\)E(\(^{4}\)G)]: 468 nm, and [\(^{6}\)A\(_{1}(^{6}\)S) \( \to  ^{4}\)T\(_{2}(^{4}\)G)]: 498 nm of Mn\(^{2 + }\)(3d\(^{5})\) cations. It was shown that the capping affected only the intensities of emissions bands.

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Author Biography

Dang Van Thai, Hanoi University of Science, Vietnam National University, Hanoi

Dang Van Thai, Pham Van Thang, Pham Van Ben, Bui Hong Van

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Published

09-03-2016

How to Cite

Thai, D. V., Thang, P. V., Ben, P. V., Van, B. H., Thi, T. M., & Nhat, H. N. (2016). Influence of Polyvinyl Pyrrolidone on Absorption and Radiation Transitions of Mn\(^{2 + }\) ions in Mn-doped ZnS Nanoparticles. Communications in Physics, 25(4), 349. https://doi.org/10.15625/0868-3166/25/4/5062

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