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

Materials

Yumiko Katayama¹ 

关键词: quantum cutting;    praseodymium;    ytterbium;    glass;    solar energy;   

DOI  :  10.3390/ma3042405

来源: mdpi

【 摘 要 】

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⁺:³P₀→¹G₄)→(Yb³⁺:²F_5/2←²F_7/2) and (Pr³⁺:¹D₂→³F₄, ³F₃)→(Yb³⁺:²F_5/2←²F_7/2), 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⁺:³P_J levels at 420 ~ 490 nm.

【 授权许可】

CC BY   
© 2010 by the authors; licensee Molecular Diversity Preservation International, Basel, Switzerland.