Light-emitting device and organic-inorganic hybrid pre-polymer composition comprising phosphor

A solid light-emitting device comprising a light-emitting semiconductor element and a phosphor dispersed in a sealant, said phosphor being excited by the light emitted by the semiconductor element to emit a visible light of a wavelength differing from that of the light emitted by the semiconductor element,

• in which the phosphor is a silicate phosphor or a phosphor having a hydroxyl group on a surface thereof, and
• in which the sealant is a condensation product of a prepolymer produced by condensation of polydimethylsiloxane having a silanol group at both ends and an oligomer of an alkoxide of a metal or a semimetal, a hydrolysis product of the oligomer, a condensation product of the hydrolysis products, or a condensation product of the oligomer and the hydrolysis product.