TY - JOUR
T1 - Luminescence study in Eu-doped aluminum oxide phosphors
AU - Hirata, G.
AU - Perea, N.
AU - Tejeda, M.
AU - Gonzalez-Ortega, J. A.
AU - McKittrick, J.
N1 - Funding Information:
The authors would like to acknowledge financial support from CONACYT-Mexico (grants no. 35971-U and No. 40128-F), DGAPA-UNAM (grant no. IN105201), DOE (grant no. DE-FC26-04NT42274) and UCSD VonLiebig (grant no. AMEMKVL). Technical work performed by E. Aparicio, M. Sainz, F. Ruiz, J.A. Díaz, A. Tiznado, E. Medina, I. Gradilla, E. Flores, V. García-Gradilla, G. Vilchis, P. Casillas and J.A. Peralta is gratefully appreciated.
PY - 2005/4
Y1 - 2005/4
N2 - α- and γ-(Al1-xEux)2O 3 polycrystalline phosphor powders have been prepared via pressure assisted combustion synthesis at ∼280 °C. The particle size could be controlled (nanoparticles/microparticles) by adjusting the initial pressure in the combustion reactor. Upon excitation at 394 nm, the Eu-doped alumina nanoparticles exhibited a strong photoluminescence due to a parity forbidden f-f intraconfigurational transition upon excitation at λ = 395 nm. By analyzing the emission lines in the cathodoluminescence spectrum of the europium doped α-Al2O3 sample it was inferred that the dopant ions occupy low symmetry sites in the host lattice. These powders are potentially good candidates for photonics applications.
AB - α- and γ-(Al1-xEux)2O 3 polycrystalline phosphor powders have been prepared via pressure assisted combustion synthesis at ∼280 °C. The particle size could be controlled (nanoparticles/microparticles) by adjusting the initial pressure in the combustion reactor. Upon excitation at 394 nm, the Eu-doped alumina nanoparticles exhibited a strong photoluminescence due to a parity forbidden f-f intraconfigurational transition upon excitation at λ = 395 nm. By analyzing the emission lines in the cathodoluminescence spectrum of the europium doped α-Al2O3 sample it was inferred that the dopant ions occupy low symmetry sites in the host lattice. These powders are potentially good candidates for photonics applications.
UR - http://www.scopus.com/inward/record.url?scp=15944412180&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=15944412180&partnerID=8YFLogxK
U2 - 10.1016/j.optmat.2004.11.029
DO - 10.1016/j.optmat.2004.11.029
M3 - Conference article
AN - SCOPUS:15944412180
SN - 0925-3467
VL - 27
SP - 1311
EP - 1315
JO - Optical Materials
JF - Optical Materials
IS - 7
T2 - Proceedings of the First Topical Meeting on Nanostructured Materials and Nanotechnology CIO 2004
Y2 - 22 September 2004 through 24 September 2004
ER -