Electro-deposition of Y_2O_3:Eu~(3+) thin film phosphor and its luminescent properties

摘要

Y_2O_3:Eu~(3+) red-emitting thin film phosphor was prepared by a two-step process: the cathodical deposition of thin film of yttrium hydroxide and europium hydroxide followed by an annealing process to achieve Eu~(3+) doped Y_2O_3 film. It is found that the atomic content of Eu~(3+) can be well controlled by simply adjusting the volume ratio of Y(NO_3)_3 to Eu(NO_3)_3 solutions. Dependence of the photoluminescence intensity on the atomic content of Eu~(3+) in Y_2O_3 was also studied. The best photoluminescence performance of Y_2O_3:Eu~(3+) thin film phosphor was achieved as atomic content of Eu~(3+) equal to 1.85 at.%.