LaPO4:Er microspheres with high NIR luminescent quantum yield

Description

Er-doped LaPO4 microspheres have been synthesized by spray pyrolysis and the near infrared (NIR) properties have been characterized. It has been found that, following an adequate post-annealing treatment, the emission properties are remarkably improved. The NIR luminescence intensity is highly enhanced and its decay time increases to a value almost coincident with the reported radiative lifetime, which implies that the quantum yield approaches η ≈ 100%. This improvement in luminescence characteristics is probably related to the suppression of residual OH- radicals, that otherwise act as NIR luminescence quenchers, and to the increase in material's crystallinity

Abstract

Junta de Andalucía FQM6090

Abstract

Madrid Ministerio de Ciencia e Innovación CRONOSOMATS MAT2009-14102 MICROSERES-CM P2009/TIC-1476

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