Photoluminescence and Energy Transfer Study of Er3+ and Dy3+ Codoped Tellurite Glasses
Photoluminescence properties of the Er3+–Dy3+ codoped tellurite glasses were studied by absorption and visible emission spectra, which revealed luminescence bands of both Er3+ and Dy3+ when pumping with the wavelength of 325 nm. The concentration quenching occurred as Dy3+ concentration increased beyond 3 mol%. The dependence of Er3+ characteristic emission on Dy3+ concentration indicated energy transfer process between Er3+ and Dy3+. The chromaticity coordinates of these glasses are close to white light, which implies that these glasses might be potential candidates for white lighting through an appropriate combination.
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Document Type: Research Article
Publication date: 2011-12-01
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