Materials for photoluminescence wavelength converted solid-state light emitting devices and arrangements

A photoluminescence material paste comprising:

• a first inorganic photoluminescence material having a first density,
• a second inorganic photoluminescence material having a second density, wherein the first density of the first inorganic photoluminescence material is different from the second density of the second inorganic photoluminescence material,
• a light transmissive non-curable silicone fluid, wherein the first inorganic photoluminescence material and the second inorganic photoluminescence material are substantially homogenously distributed within the light transmissive silicone fluid to form the photoluminescence material paste,
• wherein a weight loading of the first and second photoluminescence materials in the photoluminescence material paste is in a range of about 60% to about 95%, and
• wherein the non-curable silicone fluid is not curable by itself and is curable when mixed with another material.

A photoluminescence material paste comprising:

• a first inorganic photoluminescence material having a first density,
• a second inorganic photoluminescence material having a second density, wherein the first density of the first inorganic photoluminescence material is different from the second density of the second inorganic photoluminescence material,
• a light transmissive non-curable silicone fluid, wherein the first inorganic photoluminescence material and the second inorganic photoluminescence material are substantially homogenously distributed within the light transmissive silicone fluid to form the photoluminescence material paste,
• wherein the non-curable silicone fluid is not curable by itself, and
• wherein a weight loading of the first and second photoluminescence materials in the photoluminescence material paste is in a range of about 60% to about 95% and wherein the first photoluminescence material has a first average particle size and the second photoluminescence material has a second average particle size, wherein the first average particle size is different from the average particle size of the second photoluminescence material.

A photoluminescence material paste comprising:

• a first inorganic photoluminescence material having a first density,
• a second inorganic photoluminescence material having a second density, wherein the first density of the first inorganic photoluminescence material is different from the second density of the second inorganic photoluminescence material,
• a light transmissive non-curable silicone fluid, wherein the first inorganic photoluminescence material and the second inorganic photoluminescence material are substantially homogenously distributed within the light transmissive silicone fluid to form the photoluminescence material paste,
• wherein the non-curable silicone fluid is not curable by itself, and wherein a weight loading of the first and second photoluminescence materials in the photoluminescence material paste is in a range of about 60% to about 95% and further comprising particles of a light diffusive material having an average particle size of between about 40 nm and about 500 nm.