Patent ID: 8324001

Claim:
A method of fabricating a light-emitting device, the method comprising: providing a light-emitting element on a first surface of a substrate, the light emitting element being configured to output light at a first wavelength; forming a phosphor layer receiving recess in a surface through which light from the light-emitting element is emitted such that the phosphor layer receiving recess has a depth equal to a predetermined thickness without exposing the light-emitting element; and disposing the phosphor layer inside the phosphor layer receiving recess, the phosphor layer having a thickness equal to the predetermined thickness depth, the phosphor layer wavelength-converting a portion of the light at the first wavelength output from the light-emitting element into light having a second wavelength, different from the first wavelength, wherein a light conversion efficiency of the phosphor layer is maximized when the phosphor layer has the thickness.