Method of making thin film photoluminescent articles

Coating processes – Electrical product produced – Fluorescent or phosphorescent base coating

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427 64, 427 66, B05D 506, B05D 512

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active

049159828

ABSTRACT:
An article, having particular use as an optical memory medium, includes a thin electron trapping photoluminescent film upon a substrate. In one preferred embodiment, a selected material is prepared in bulk, then applied in a relatively thin film to a substrate, and then heated to a sufficient temperature for a sufficient period of time such that the selected material acquires electron trapping characteristics and becomes photoluminescent. Some preferred methods of depositing the material are electron-beam deposition and sputtering. Some preferred methods of heating the material include photo crystallization and laser crystallization.

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