Quantum dot compositions and quantum dot articles
Assignee3M Innovative Properties Company
InventorsEric W. NELSON, Joseph M. PIEPER, Zai-Ming QIU, James A. THIELEN
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Abstract
Quantum dot compositions comprise quantum dots dispersed in a curable resin composition comprising hindered phenolic antioxidant, wherein the antioxidant comprises about 0.2 wt % to about 5 wt %, based on the total weight of the quantum dot composition.
Claims17
A quantum dot composition comprising quantum dots dispersed in a curable resin composition comprising hindered phenolic antioxidant, wherein the antioxidant comprises about 0.2 wt % to about 5 wt %, based on the total weight of the quantum dot composition.
The quantum dot composition of any of the above claims wherein the antioxidant comprises one or two hindered phenol groups.
A quantum dot article comprising:
- (a) a first barrier layer,
- (b) a second barrier layer, and
- (c) a quantum dot layer between the first barrier layer and the second barrier layer, the quantum dot layer comprising quantum dots dispersed in a matrix comprising a cured curable resin composition, wherein the curable resin composition comprises hindered phenolic antioxidant, wherein the antioxidant comprises about 0.2 wt % to about 5 wt %, based on the total weight of the quantum dot composition.
A quantum dot article comprising
- (a) first barrier layer,
- (b) a second barrier layer, and
- (c) a quantum dot layer between the first barrier layer and the second barrier layer, the quantum dot layer comprising quantum dots dispersed in a matrix comprising a cured curable resin composition that when illuminated by a single pass of 7,000 mW/cm2 of 450 nm blue light at 50° C. can maintain a converted power or quantum efficiency greater than 85% its initial value for longer than 80 hours.
A quantum dot article comprising
- (a) a first barrier layer,
- (b) a second barrier layer, and
- (c) a quantum dot layer between the first barrier layer and the second barrier layer, the quantum dot layer comprising quantum dots dispersed in a matrix comprising a cured curable resin composition comprising hindered phenolic antioxidant;
- wherein when illuminated by a single pass of 7,000 mW/cm2 of 450 nm blue light at 50° C., the quantum dot article can maintain a converted power or quantum efficiency greater than 85% its initial value for at least 1.5 times longer than the same quantum dot article but containing no hindered phenolic antioxidant.
Dependencies are inferred from the claim text.