Visible and near-infrared luminescent properties of Pr3+ doped strontium molybdate thin films by a facile polymer-assisted deposition process.
作者： Fengjun Chun , Wen Li , Binbin Zhang , Wen Deng , Xiang Chu
DOI: 10.1016/J.JCIS.2018.07.040
关键词: Dopant 、 Thin film 、 Doping 、 Praseodymium 、 Chemical engineering 、 Luminescence 、 Materials science 、 Photoluminescence 、 Ultraviolet 、 Molybdate
摘要: Abstract Quartz substrate supported Praseodymium (Pr) doped strontium molybdate (SrMoO4) thin films with good uniformity and outstanding fluorescent properties are successfully fabricated via a facile polymer-assisted deposition (PAD) method. In combination the strong chelating effect of water-soluble polymer on metal cations, free cations without effectively ruled out but remaining employed for highly uniform accurate stoichiometry luminescent SrMoO4: Pr films, layer-by-layer mounting common quartz substrates. More importantly, excellent release stress from during growth process epitaxial film can overcome mismatch between then guarantee quality film. Under ultraviolet (UV) light excitation, samples show high luminescence intensity both in visible near-infrared (NIR) regions peaked at 646 nm 1037 nm, mainly ascribing to transitions 3P0 → 3F2 1G4 → 3H4 Pr3+ ions. The be tailored by optimizing number spin-coated layers doping concentrations. maximum emission occurs 4 mol% dopant, it exhibits an impressive photoluminescence quantum yield (QY) up 86.12%. These results evidently demonstrate present PAD method is useful prototype preparing performance even cheap substrate.
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