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- Title
Visible quantum cutting in LiGdF4:Eu3+ through downconversion
- Authors
Wegh RT; Donker H; Oskam KD; Meijerink A
- Abstract
For mercury-free fluorescent lamps and plasma display panels, alternative luminescent materials are required for the efficient conversion of vacuum ultraviolet radiation to visible light. Quantum cutting involving the emission of two visible photons for each vacuum ultraviolet photon absorbed is demonstrated in Eu3+-doped LiGdF4 with the concept of downconversion. Upon excitation of Gd3+ with a high-energy photon, two visible photons can be emitted by Eu3+ through an efficient two-step energy transfer from Gd3+ to Eu3+, with a quantum efficiency that approaches 200 percent.
- Publication
Science (New York, N.Y.), 1999, Vol 283, Issue 5402, p663
- ISSN
1095-9203
- Publication type
Journal Article
- DOI
10.1126/science.283.5402.663