Chlorine silicate cyan long-afterglow luminescent material and preparation method thereof

The invention discloses a chlorosilicate cyan long-afterglow luminescent material and a preparation method thereof, and the chemical expression of the luminescent material is Sr8-m-nSi4O12Cl8: Eum, Rn. The preparation method comprises the following steps: respectively weighing the raw materials acco...

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Hauptverfasser: CHEN XIN, ZENG WEI, LEI YUTONG, MEI MENGDI, CHEN WENXIAO
Format: Patent
Sprache:chi ; eng
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Zusammenfassung:The invention discloses a chlorosilicate cyan long-afterglow luminescent material and a preparation method thereof, and the chemical expression of the luminescent material is Sr8-m-nSi4O12Cl8: Eum, Rn. The preparation method comprises the following steps: respectively weighing the raw materials according to the stoichiometric ratio of the elements in the chemical expression, mixing, adding a proper amount of ethanol, grinding, uniformly mixing, calcining in a high-temperature tube furnace in which a reducing atmosphere is introduced, cooling along with the furnace, and grinding again to prepare the chlorosilicate cyan long-afterglow luminescent material. The luminescent center of the prepared luminescent material comes from Eu < 2 + >, and trivalent rare earth ions La < 3 + >, Ce < 3 + > and the like are used as auxiliary activating ions, so that the luminescent intensity of the long-afterglow luminescent material is enhanced, and the luminescent time is prolonged. After 10 minutes of irradiation of the ultra