Yttrium oxide upconverting phosphors. 5. Upconversion luminescent emission from holmium-doped yttrium oxide under 632.8 nm light excitation

Article Abstract:

The anti-stokes emission properties of cubic Y2O3:Ho(super 3+) have been studied in the concentration range 0.25 - 10 mol % Ho(super 3+). Maximum upconversion emission for the main yellow-green emission in the range 530-570 nm is observed at a concentration of 0.5% under 632.8 nm excitation.

Properties

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Yttrium oxide upconverting phosphors. Part 4: Upconversion luminescent emission from thulium-doped yttrium oxide under 632.8-nm light excitation

Article Abstract:

The strong blue upconversion emission was observed from yttrium oxide: Tm(super 3+) phosphors under 632.8-nm excitation, in addition to weaker green and red emissions. All of these emissions, including the red, showed a two-photon intensity dependence on the incident 632.8-nm laser power.

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