Linganiso, ECMwakikunga, Bonex WMhlanga, SDCoville, NJ2014-09-222014-09-222014-11Linganiso, E.C, Mwakikunga, B.W, Mhlanga, S.D and Coville, N.J. 2014. Au-controlled enhancement of photoluminescence of NiS nanostructures synthesized via a microwave-assisted hydrothermal technique. Journal of Luminescence, vol. 155, pp 305- 3100022-2313http://ac.els-cdn.com/S0022231314003871/1-s2.0-S0022231314003871-main.pdf?_tid=4e4849e6-3ffa-11e4-92e5-00000aab0f6b&acdnat=1411130681_d5b4c10ef61013765579dafacb430095http://hdl.handle.net/10204/7683Copyright: 2014 Elsevier. This is an ABSTRACT ONLY. The definitive version is published in Journal of Luminescence, vol. 155, pp 305-310Nickel sulphide (NiS) nanostructures decorated with gold (Au) nanoparticles (NPs) were synthesized via a microwave-assisted hydrothermal technique. Binary phase NiS (a and ß) crystalline nanostructures, bare, and decorated with Au NPs were obtained and confirmed by X-ray diffraction (XRD) studies. TEM analysis revealed that the NiS nanostructures were of various shapes. A quantum confinement effect was confirmed by the blue shift PL emissions and high optical energy band gap observed for the as-synthesized sample. A threefold light emission enhancement due to Au NP coatings was obtained when Au metal NP decoration concentrations was varied from 1% to 10%. These enhancements were attributed to the surface plasmon resonance (SPR) excitation of the surface decorated metal NPs which results in an increased rate of spontaneous emission. The PL enhancement factor was observed to vary at different NiS emissions as well as with the size of the Au NPs. The effect of metal NP decoration on the PL emission of NiS is to the best of our knowledge, presented for the first time.enNickel sulphideEnhanced PL emissionPhotoluminescenceSurface plasmon resonanceArticleLinganiso, E., Mwakikunga, B. W., Mhlanga, S., & Coville, N. (2014). Au-controlled enhancement of photoluminescence of NiS nanostructures synthesized via a microwave-assisted hydrothermal technique. http://hdl.handle.net/10204/7683Linganiso, EC, Bonex W Mwakikunga, SD Mhlanga, and NJ Coville "Au-controlled enhancement of photoluminescence of NiS nanostructures synthesized via a microwave-assisted hydrothermal technique." (2014) http://hdl.handle.net/10204/7683Linganiso E, Mwakikunga BW, Mhlanga S, Coville N. Au-controlled enhancement of photoluminescence of NiS nanostructures synthesized via a microwave-assisted hydrothermal technique. 2014; http://hdl.handle.net/10204/7683.TY - Article AU - Linganiso, EC AU - Mwakikunga, Bonex W AU - Mhlanga, SD AU - Coville, NJ AB - Nickel sulphide (NiS) nanostructures decorated with gold (Au) nanoparticles (NPs) were synthesized via a microwave-assisted hydrothermal technique. Binary phase NiS (a and ß) crystalline nanostructures, bare, and decorated with Au NPs were obtained and confirmed by X-ray diffraction (XRD) studies. TEM analysis revealed that the NiS nanostructures were of various shapes. A quantum confinement effect was confirmed by the blue shift PL emissions and high optical energy band gap observed for the as-synthesized sample. A threefold light emission enhancement due to Au NP coatings was obtained when Au metal NP decoration concentrations was varied from 1% to 10%. These enhancements were attributed to the surface plasmon resonance (SPR) excitation of the surface decorated metal NPs which results in an increased rate of spontaneous emission. The PL enhancement factor was observed to vary at different NiS emissions as well as with the size of the Au NPs. The effect of metal NP decoration on the PL emission of NiS is to the best of our knowledge, presented for the first time. DA - 2014-11 DB - ResearchSpace DP - CSIR KW - Nickel sulphide KW - Enhanced PL emission KW - Photoluminescence KW - Surface plasmon resonance LK - https://researchspace.csir.co.za PY - 2014 SM - 0022-2313 T1 - Au-controlled enhancement of photoluminescence of NiS nanostructures synthesized via a microwave-assisted hydrothermal technique TI - Au-controlled enhancement of photoluminescence of NiS nanostructures synthesized via a microwave-assisted hydrothermal technique UR - http://hdl.handle.net/10204/7683 ER -