Abstract
Abstract The influence of lithium doping on the crystallization, the surface morphology, and the luminescent properties of pulsed laser deposited Y 2− x Gd x O 3 :Eu 3+ thin film phosphors was investigated. The crystallinity, the surface morphology, and the photoluminescence (PL) of films depended highly on the Li-doping and the Gd content. The relationship between the crystalline and morphological structures and the luminescent properties was studied, and Li + doping was found to effectively enhance not only the crystallinity but also the luminescent brightness of Y 2− x Gd x O 3 :Eu 3+ thin films. In particular, the incorporation of Li and Gd into the Y 2 O 3 lattice could induce remarkable increase in the PL. The highest emission intensity was observed Li-doped Y 1.35 Gd 0.6 O 3 :Eu 3+ thin films whose brightness was increased by a factor of 4.6 in comparison with that of Li-doped Y 2 O 3 :Eu 3+ thin films.
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