Nogales Díaz, EmilioGarcía, José A.Méndez Martín, María BianchiPiqueras De Noriega, Francisco Javier2023-06-202023-06-202007-02-010021-897910.1063/1.2434834https://hdl.handle.net/20.500.14352/50945© 2007 American Institute of Physics. This work has been supported by MEC Project No. MAT2003-00455 and UCM-CM Group 910146.Red luminescence emission from chromium doped ß-Ga_2O_3 nanowires has been studied by means of photoluminescence (PL) techniques. PL excitation shows several bands in the ultraviolet-visible region. Time decay values, obtained by time resolved PL, at different temperatures fit a three level model with thermal population of the upper level from the middle one. From the results, the origin of the emission is assigned to Cr^3+ ions in the ß-Ga_2O_3 host, and values for the energy level separation and Huang-Rhys factor of the broad^4T_2^(-4)A_2 emission are estimated.engjournal articlehttp://jap.aip.org/resource/1/japiau/v101/i3/p033517_s1http://jap.aip.orgopen access358.9OxideRubyRadiationCrystalsEmeraldFísica de materiales