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Materials 2010, 3(4), 2405-2411; doi:10.3390/ma3042405

Spectroscopy and 1μm Luminescence by Visible Quantum Cutting in Pr3+-Yb3+ Codoped Glass

Graduate School of Human and Environmental Studies, Kyoto university / Yoshida-nihonmatsu-cho, Sakyo-ku, Kyoto 606-8501, Japan
Author to whom correspondence should be addressed.
Received: 28 December 2009 / Revised: 25 January 2010 / Accepted: 25 March 2010 / Published: 29 March 2010
(This article belongs to the Special Issue Luminescent Materials)
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The quantum cutting phenomenon of a blue photon into two infrared photons is reported in glass codoped with Pr3+-Yb3+ ions. Oxyfluoride glass with compositions of 32SrF2-0.1PrF3-2.9YbF3-42SiO2-23Al2O3 were prepared, and photoluminescence properties in the range from visible to near-infrared were investigated. Evidence of several energy transfers, such as (Pr3+:3P01G4)→(Yb3+:2F5/22F7/2) and (Pr3+:1D23F4, 3F3)→(Yb3+:2F5/22F7/2), were demonstrated in the Pr3+-Yb3+ co-doped glass. By comparing excitation spectrum of the Yb3+ emission with absorption spectrum of Pr3+, we obtain direct evidence of quantum cutting by excitation to Pr3+:3PJ levels at 420 ~ 490 nm. View Full-Text
Keywords: quantum cutting; praseodymium; ytterbium; glass; solar energy quantum cutting; praseodymium; ytterbium; glass; solar energy

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Katayama, Y.; Tanabe, S. Spectroscopy and 1μm Luminescence by Visible Quantum Cutting in Pr3+-Yb3+ Codoped Glass. Materials 2010, 3, 2405-2411.

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