Light-emitting device with narrow dominant wavelength distribution and method of making the same

A method of manufacturing a light-emitting device with narrow dominant wavelength distribution, comprising the steps of:

• providing a substrate;
• forming a plurality of light-emitting stacked layers on the substrate, wherein each of the plurality of light-emitting stacked layers emits a first light, and the first lights emitted by the plurality of light-emitting stacked layers have a first dominant wavelength variation;
• and
• forming a plurality of wavelength transforming layers on the plurality of light-emitting stacked layers, wherein each of the plurality of wavelength transforming layers absorbs the first light and emits a second light, and the second lights emitted by the plurality of wavelength transforming layers having a second dominant wavelength variation smaller than the first dominant wavelength variation.