Led with ceramic green phosphor and protected red phosphor layer

A wavelength conversion structure comprising:

• a ceramic wavelength conversion element comprising a first wavelength conversion material configured to absorb light of a first wavelength and in response emit light of a second and longer wavelength;
• a wavelength conversion layer disposed on a surface of the ceramic wavelength conversion element and comprising particles of a second wavelength conversion material dispersed in a binder material, the second wavelength conversion material configured to absorb light of the first wavelength and in response emit light of a third and longer wavelength different from the second wavelength;
• and
• a transparent coating disposed on a surface of the wavelength conversion layer opposite from the ceramic wavelength conversion element, the transparent coating substantially transparent to light of the first, second, and third wavelengths.

A light emitting device comprising:

• a light emitting element configured to emit light having a first wavelength;
• a wavelength conversion structure comprising:
• a ceramic wavelength conversion element comprising a first wavelength conversion material configured to absorb light of the first wavelength and in response emit light of a second and longer wavelength;
• a wavelength conversion layer disposed on a surface of the ceramic wavelength conversion element and comprising particles of a second wavelength conversion material dispersed in a binder material, the second wavelength conversion material configured to absorb light of the first wavelength and in response emit light of a third and longer wavelength different from the second wavelength;
• and
• a transparent coating disposed on a surface of the wavelength conversion layer opposite from the ceramic wavelength conversion element, the transparent coating substantially transparent to light of the first, second, and third wavelengths;
• and
• an adhesive layer bonding the wavelength conversion structure to the light emitting element.