کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
149671 456435 2012 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Photoluminescence properties of Sn-embedded MgO nanorods with different morphologies synthesized by a single thermal evaporation process
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Photoluminescence properties of Sn-embedded MgO nanorods with different morphologies synthesized by a single thermal evaporation process
چکیده انگلیسی

The Sn-embedded MgO 1D nanostructures with different Sn core morphologies depending on the substrate temperature were synthesized by a single thermal evaporation process without a subsequent annealing process. The morphology of the Sn core exhibited the following changes with increasing temperature: from a continuous line to a peapod-like chain via a discrete line. The as-synthesized MgO nanorods showed an emission band at ∼610 nm in the orange region, whereas the Sn–MgO composite nanorods grown at 600–900 °C showed an emission band at ∼490 nm in the blue region. The emission intensity tended to increase rapidly with increasing substrate temperature. The intensity of emission from the Sn-peapodded nanorods grown at 900 °C was more than six times higher than that of the Sn-core/MgO-shell nanorods with a continuous linear shaped-Sn core grown at 600 °C. On the other hand, the enhanced blue emission from the Sn-peapodded nanorods originated from the enhanced crystallinity of the MgO nanorods rather than from the surface plasmon resonance of Sn-peapods in the nanorods.

The Sn-embedded MgO 1D nanostructures with different Sn core morphologies depending on the substrate temperature were synthesized by a single thermal evaporation process without a subsequent annealing process. The morphology of the Sn core changed from a continuous line to a peapod-like chain via a discrete line with increasing temperature. The as-synthesized Sn nanorods showed an emission band at ∼610 nm in the orange region, whereas the Sn–MgO composite nanorods grown at 600–900 °C showed an emission band at ∼490 nm in the blue region. The emission intensity tended to increase rapidly with increasing substrate temperature..Figure optionsDownload as PowerPoint slideHighlights
► The Sn-embedded MgO nanorods were synthesized by a single thermal evaporation process.
► The morphology of the Sn core strongly depended on the substrate temperature.
► The emission intensity tended to increase with increasing substrate temperature.
► The Sn-peapodded nanorods grown at 900 °C showed the highest PL emission intensity.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Journal - Volumes 198–199, 1 August 2012, Pages 420–425
نویسندگان
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