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oai:docta.ucm.es:20.500.14352/592732024-09-06T17:53:59Zcom_20.500.14352_14col_20.500.14352_15

2.3 eV photoluminescence in YBa_2Cu_3O_(7−x) ceramics García, J. A. Remón, A. Piqueras De Noriega, Francisco Javier 538.9 Scanning Electron-Microscope High-Tc Superconductors Cathodoluminescence Luminescence Spectra Vacuum Phases Films Física de materiales © 1994 WILEY-VCH Verlag GMBH Time-resolved photoluminescence spectroscopy at low temperatures is used to study the 2.3 eV emission induced by treatments causing oxygen loss in YBa_2Cu_3O_(7-x). The decay shows a biexponential behavior with components of 34 and 87 mus at 10 K. The spectroscopic data enable to separate this emission from luminescence related to specific impurity phases. The present results agree with the existence of optical transitions in the same spectral range as previously reported in literature. Depto. de Física de Materiales Fac. de Ciencias Físicas TRUE pub 2023-06-20T19:07:21Z 2023-06-20T19:07:21Z 1994-07-16 journal article https://hdl.handle.net/20.500.14352/59273 1862-6300 10.1002/pssa.2211440124 metadata only access Wiley-V C H Verlag GMBH