Provided are: a laminate which does not undergo the formation of fisheyes or the unevenness in coating in a step of coating a resin solution for sheet production purposes onto a base of the laminate, and in which the base and a phosphor sheet can be delaminated easily in a delamination step; and a method for producing a light-emitting diode provided with a wavelength conversion layer. The laminate according to the present invention is characterized by comprising: a base which comprises polyphenylenesulfide; and a phosphor sheet which is laminated on the base and contains at least a silicone resin and a phosphor.