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Influence of Sintering Temperatures in Er³⁺/Yb³⁺/Tm³⁺ Tri-Doped Y₂O₃ Nanophosphors
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/></div></noscript> <!-- /Yandex.Metrika counter --> <!-- Matomo --> <!-- End Matomo Code --> <title>Influence of Sintering Temperatures in Er³⁺/Yb³⁺/Tm³⁺ Tri-Doped Y₂O₃ Nanophosphors</title> <meta name="description" content="Influence of Sintering Temperatures in Er³⁺/Yb³⁺/Tm³⁺ Tri-Doped Y₂O₃ Nanophosphors"> <meta name="keywords" content="white upconversion emission, nanophosphors, energy transfer, solvothermal method"> <meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1, user-scalable=no"> <meta charset="utf-8"> <link href="https://cdn.waset.org/favicon.ico" type="image/x-icon" rel="shortcut icon"> <link href="https://cdn.waset.org/static/plugins/bootstrap-4.2.1/css/bootstrap.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/plugins/fontawesome/css/all.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/css/site.css?v=150220211555" rel="stylesheet"> </head> <body> <header> <div class="container"> <nav 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class="card"> <div class="card-body"><strong>Paper Count:</strong> 87408</div> </div> </div> </div> <div class="card publication-listing mt-3 mb-3"> <h5 class="card-header" style="font-size:.9rem">Influence of Sintering Temperatures in Er³⁺/Yb³⁺/Tm³⁺ Tri-Doped Y₂O₃ Nanophosphors</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hyeon%20Mi%20Noh">Hyeon Mi Noh</a>, <a href="https://publications.waset.org/abstracts/search?q=Ju%20Hyun%20Oh"> Ju Hyun Oh</a>, <a href="https://publications.waset.org/abstracts/search?q=Jung%20Hyun%20Jeong"> Jung Hyun Jeong</a>, <a href="https://publications.waset.org/abstracts/search?q=Haeyoung%20Choi"> Haeyoung Choi</a>, <a href="https://publications.waset.org/abstracts/search?q=Jung%20Hwan%20Kim"> Jung Hwan Kim</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The Er³⁺/Yb³⁺/Tm³⁺ tri-doped Y₂O₃ nanophosphors were synthesized by solvothermal method and its temperature dependence of the white upconversion emission has been studied by using 975 nm laser diode. The upconversion emission spectra in 1 mol% Er³⁺/5 mol% Yb³⁺/xTm³ tri-doped Y₂O₃ nanophosphors sintered at 1000 °C with x from 0 to 0.5 mol%. The blue emission intensity increase with Tm³⁺ concentration from 0 to 0.5 mol%, it is due to the 2F7/2→2F5/2 transition of Yb³⁺ around 10,000 cm-1 could easily reach the Tm³⁺ sates. The white light is composed with the blue (1G4→3H6 of Tm³⁺), green (2H11/2, 4S3/2→4I15/2 of Er³⁺), and red (4F9/2→4I15/2 of Er³⁺) upconversion radiations. The Y₂O₃: Er³⁺/Yb³⁺/Tm³⁺ nanophosphors show from white to green upconversion emission at power of 600 mW/cm² as sintering temperature increased. The calculated Commission Internationale de l’Eclairage (CIE) coordinates can be located in the white area with various sintering temperatures, in sintered at 1000 °C, and their color coordinates are very close to the standard white-light emission (0.33, 0.33). Their upconversion processes were explained by measuring the upconversion luminescence spectra and pump power dependence and energy level diagram. <iframe src="https://publications.waset.org/abstracts/75850.pdf" style="width:100%; height:400px;" frameborder="0"></iframe> <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=white%20upconversion%20emission" title="white upconversion emission">white upconversion emission</a>, <a href="https://publications.waset.org/abstracts/search?q=nanophosphors" title=" nanophosphors"> nanophosphors</a>, <a href="https://publications.waset.org/abstracts/search?q=energy%20transfer" title=" energy transfer"> energy transfer</a>, <a href="https://publications.waset.org/abstracts/search?q=solvothermal%20method" title=" solvothermal method"> solvothermal method</a> </p> <a href="https://publications.waset.org/abstracts/75850/influence-of-sintering-temperatures-in-er3yb3tm3-tri-doped-y2o3-nanophosphors" 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