Light emitting device

A light emitting device, comprising:

• a light emitting element adapted to emit blue light;
• a plurality of quantum dots adapted to absorb a portion of the blue light emitted from the light emitting element to emit green light;
• at least one of a KSF phosphor and a MGF phosphor, the KSF phosphor being adapted to absorb a portion of the blue light emitted from the light emitting element to emit red light, and the MGF phosphor being adapted to absorb a portion of the blue light emitted from the light emitting element to emit red light;
• a sealing resin covering the light emitting element;
• and
• a quantum dot layer disposed outside the sealing resin, the quantum dot layer including a light-transmissive material and the quantum dots having a particle size of 1 to 20 nm, wherein the KSF phosphor is a compound having the chemical formula:
• A2[M1−aMn4+aF6] (1)
• where A is at least one selected from the group consisting of K+, Li+, Na+, Rb+, Cs+, and NH+, M is at least one element selected from the group consisting of Group 4 elements and Group 14 elements, and
• 0<a <0.2;
• wherein the MGF phosphor is a compound having the chemical formula:
• (x−a)MgO.(a/2)Sc2O3.yMgF2.cCaF2.(1−b)GeO2.(b/2)Mt2O3:zMn4− (2)
• wherein
• 2.0≤x≤4.0,
• 0<y<1.5,
• 0<z<0.05,
• 0≤a<0.5,
• 0<b<0.5,
• 0≤c<1.5,
• y +c<1.5, and
• Mt is at least one element selected from Al, Ga and In;
• wherein the light emitting element and the sealing resin constitute a part of a light emitting element package;
• wherein the quantum dot layer is spaced apart from the light emitting element package including the sealing resin so that transfer of heat generated from the light emitting element to the quantum dots is suppressed;
• and
• wherein the sealing resin includes at least one of the KSF phosphor and the MGF phosphor.