| abstract |
PROBLEM TO BE SOLVED: To provide a wavelength converter that exhibits good wavelength conversion efficiency in a light emitting device in which a semiconductor phosphor having an average particle diameter of 10 nm or less is combined with an LED chip, and that is inexpensive and can be miniaturized, and light emission using the same Providing the device. A wavelength converter according to the present invention is formed of a polymer 5 containing droplets 3 having a size of 0.05 to 100 μm, and the droplets 3 are liquids having a water content of 0.1% by mass or less. 9 and a semiconductor phosphor 7 having an average particle diameter of 0.5 to 10 nm present in a dispersed state in the liquid 9, and the oxygen permeability of the polymer 5 is 10 × 10 6 cm 3 (STP) · cm. / (Cm 2 · s · cmHg) or less. The light emitting device of the present invention includes a light emitting element and the wavelength converter 1 that converts the wavelength of light from the light emitting element. [Selection] Figure 1 |