Surface plasmon induced photoluminescence enhancement in the Au–ZnS nanocomposite |
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| Affiliation: | 1. Nikolaev Institutes of Inorganic Chemistry SB RAS, Lavrentiev Pr. 3, Novosibirsk 630090, Russia;2. Novosibirsk State University, Pirogova Str. 2, Russia;1. Institute of Ion Beam Physics and Materials Research, Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany;2. Physics Department, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia;3. Nuclear and Radiation Physics Lab, Physics Department, Faculty of Science, Mansoura University, 35516 Mansoura, Egypt;4. Technische Universität Dresden, 01062 Dresden, Germany;5. Institute of Applied Physics, Vienna University of Technology, 1040 Vienna, Austria;1. Faraday Materials Laboratory, Materials Research Center, Indian Institute of Science, C.V. Raman Avenue, Bangalore 560012, India;2. Department of Energy Science and Engineering, Indian Institute of Technology Bombay (IITB), Mumbai 40006, India;1. Department of LED Convergence Engineering, Pukyong National University, Busan 48547, Republic of Korea;2. Department of Physics, Pukyong National University, Busan 48513, Republic of Korea;1. Department of Veterinary Technology, Faculty of Veterinary Technology, Kasetsart University, 50 Ngam Wong Wan Road, Bangkok 10900, Thailand;2. Department of Chemistry and Biochemistry, University of Missouri-St. Louis One University, Blvd., St Louis, MO 63121, USA |
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| Abstract: | In this study, we prepared a novel Au–ZnS nanocomposite by simple homogeneous precipitation at room temperature. It is found that the defect emission (around 490 nm) from ZnS is dramatically tailored by the presence of Au nanoparticles. Specifically, the photoluminescent performance of this structure is strongly influenced by the size and concentration of Au cores and the surfactant. When the Au core is 12 nm and the mass fraction of Au is 0.050%, an enhancement of up to 38.5% in the photoluminescent intensity was observed. This enhancement is attributed to energy transfer from ZnS to Au followed by a large local electromagnetic field on or near the surface of the Au nanoparticles. |
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| Keywords: | Zinc sulfide Au nanoparticles Photoluminescence Surface plasmon resonance |
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