Enhanced oscillator strengths and optical parameters of doped ZnS bulk and nanophosphors

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We synthesized, characterized, and investigated the oscillator-strength (OS), dipole-moment (DM) and integrated cross-section values (ICSVs) of singly (Mn) and doubly (Mn and Co or Ni) doped samples of ZnS bulk and nanophosphors. Although ZnS doped nanophosphors were extensively studied during recent years, most of the reports described available are related to lifetime and photoluminescence of these phosphors [1, 2]. However, there are limited numbers of reports which describe the OSVs, DMVs and ICSVs of ZnS doped bulk and nanophosphors. The theoretical models that were used previously to measure the OSVs of ZnS bulk/nanophosphors are cumbersome and they require tedious calculations which were found to be more complicated when one considers the multiple dopants for calculations of OSVs. Not only are these models labor intensive but they are also limited in the accuracy. To overcome all these difficulties encountered in the literature, we report a relatively simple model in present investigations to analyze these parameters from radiative transition probabilities, index of refraction and radiative wavelengths.

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Journal: TechConnect Briefs
Volume: 1, Nanotechnology 2009: Fabrication, Particles, Characterization, MEMS, Electronics and Photonics
Published: May 3, 2009
Pages: 299 - 300
Industry sector: Advanced Materials & Manufacturing
Topic: Materials Characterization & Imaging
ISBN: 978-1-4398-1782-7