Method of using nanoparticles to fabricate an emitting layer of an optical communication light sourc

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A method of using nanoparticles to fabricate an emitting layer of an optical communication light source on a substrate is proposed, in which a host capable of reacting with unstable ions on the surface of a rare earth ions nanomaterial is used as a carrier of nanoparticles to make the rare earth ions nanomaterial release rare earth ions, thereby forming an emitting layer that can be excited by an external current or light source to emit light.