کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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610208 | 880642 | 2009 | 9 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Controlled synthesis, optical and electronic properties of Eu3+ doped yttrium oxysulfide (Y2O2S) nanostructures Controlled synthesis, optical and electronic properties of Eu3+ doped yttrium oxysulfide (Y2O2S) nanostructures](/preview/png/610208.png)
Single crystalline Eu3+ doped yttrium oxysulfide (Y2O2S) nanocrystals, nanosheets, nanobelts, nanotubes, nanorods and nanowires have been successfully prepared via precursors of Y(OH)3 nanostructures in high yields and purities by a convenient hydrothermal method under mild conditions. Comprehensive structural, morphological and spectroscopical studies have been carried out on the nanometre scale. The as-prepared samples are characterized using X-ray photoelectron spectra (XPS), to investigate the elementary states on the surfaces. A significant shift (∼0.22–0.36 eV) in the optical spectra of the Y2O2S:Eu3+ system corresponding to the fundamental absorption and charge transfer bands, respectively, with respect to the bulk counterpart. The zero and one-dimensional (1D) nanostructures are good candidates for investigating size-induced opto-electronic properties of functional oxysulfides. In order to identify the origin and nature of the electronic transitions observed in the visible region, the photo-induced impedance measurements have been extended to the zero and 1D nanostructures.
Controlled growth of Y2O2S:Eu3+ nanostructures are synthesized for its potential opto-electronic properties in nanoscale semi-conducting luminescent structures.Figure optionsDownload as PowerPoint slide
Journal: Journal of Colloid and Interface Science - Volume 336, Issue 2, 15 August 2009, Pages 889–897