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Enhancement of the luminescent and optical properties of ceramic Ce:GAGG after surface treatment with phosphoric acid.
Opt Express ; 29(2): 751-760, 2021 Jan 18.
Article en En | MEDLINE | ID: mdl-33726305
ABSTRACT
Surface modification of ceramic Ce-doped Gd3Al2Ga3O12 (CeGAGG) was performed by exposing small samples to anhydrous phosphoric acid (H3PO4) under different conditions (temperature and duration) to investigate the effects of chemical polishing treatment. When coupled to a photomultiplier tube (PMT) and used as a radiation detector, chemical treatment for 3 min at 190 °C improved the light (signal) output by 24.8% and energy resolution by 2.5% (percentage point), respectively. This can be attributed to a reduction in surface roughness that enhanced optical properties. Thus, chemical polishing could be a low-cost alternative to mechanical polishing especially for small or complex shaped ceramic scintillators.

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Opt Express Asunto de la revista: OFTALMOLOGIA Año: 2021 Tipo del documento: Article

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Opt Express Asunto de la revista: OFTALMOLOGIA Año: 2021 Tipo del documento: Article