A light-emitting device includes a substrate including electrodes, a first group including a plurality of blue light-emitting diode elements that are disposed on the substrate and electrically connected to the electrodes, a second group including a plurality of blue light-emitting diode elements that are disposed on the substrate and electrically connected to the electrodes, a fluorescent layer disposed to receive light from the first group of blue light-emitting diode elements, and a phosphorescent layer disposed to receive light from the second group of blue light-emitting diode elements.