SELF-SUPPORTING WAVELENGTH-CONVERTING PHOSPHOR LAYER

A layer of multiple phosphor particles is formed on a surface of a substrate, and inorganic material is formed or deposited to embed at least partially the layer of phosphor particles on the substrate. A wavelength-converting layer is thus formed, including the phosphor particles and the inorganic material, that is then separated from the substrate. The inorganic material binds together the phosphor particles so that the wavelength-converting layer is self-supporting. In some examples, before separating the wavelength-converting layer from the substrate, a release member can be adhered to a surface of the wavelength-converting layer opposite the substrate; the wavelength-converting layer can remain adhered to the release member after separation from the substrate. In some examples the wavelength-converting layer can be adhered to a light-emitting surface of a semiconductor light-emitting device.