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Proceedings Paper

Visible emission of rare-earth-doped ZrO2 nanocrystalline phosphor under UV and IR excitation
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Paper Abstract

The photoluminescence and crystalline structure characterization of undoped and several samarium and erbium doped ZrO2 samples are reported. Strong visible fluorescence emission produced by the transitions 4G5/26H5/2,7/2,9/2 of Sm3+ was obtained by the excitation of the host at 320 nm (downconversion). Green (545 nm) and red (680 nm) emissions bands were observed under 962 nm excitation (upconversion). Experimental results showed that the emission bands could be tuned by controlling the Er3+ concentration. In particular, for the highest Er3+ concentration, the red band is enhanced under 962 nm excitation. The nature of this behavior is discussed taking into account the concentration dependent non-radiative energy transfer (4I13/2 + 4I11/2) → (4F9/2 + 4I15/2) and cross-relaxation (2H11/2 + 4I15/2) → (4I9/2 + 4I13/2) process.

Paper Details

Date Published: 26 January 2004
PDF: 11 pages
Proc. SPIE 5187, Third International Conference on Solid State Lighting, (26 January 2004); doi: 10.1117/12.506658
Show Author Affiliations
Elder De la Rosa-Cruz, Ctr. de Investigaciones en Optica, A.C. (Mexico)
Luis A. Diaz-Torres, Ctr. de Investigaciones en Optica, A.C. (Mexico)
Pedro Salas, Instituto Mexicano del Petroleo (Mexico)
Ruben A. Rodriguez, Ctr. de Investigaciones en Optica, A.C. (Mexico)


Published in SPIE Proceedings Vol. 5187:
Third International Conference on Solid State Lighting
Ian T. Ferguson; Nadarajah Narendran; Steven P. DenBaars; John C. Carrano, Editor(s)

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