GLASS FIBER COMPOSITE QUANTUM DOT FILM
Provided are optical compositions comprising quantum dots and glass fiber segments dispersed in a matrix material, the compositions exhibiting reduced aggregation between quantum dots. The disclosed compositions may be extruded into film form, and may be used in display devices.
1 - 20 (canceled)
21 . An optical composition, comprising:
a polymeric matrix material;
a population of quantum dots dispersed within the polymeric matrix material; and
a population of glass fiber segments dispersed within the polymeric matrix material,
the glass fiber segments effecting reduced aggregation between the quantum dots.
22 . The optical composition of claim 21 , wherein the composition is present as a film.
23 . The optical composition of claim 22 , wherein the film defines a thickness in the range of from about 100 to about 300 micrometers.
24 . The optical composition of claim 22 , wherein the film is characterized as an extruded film.
25 . The optical composition of claim 21 , wherein the population of glass fiber segments has an average diameter of from about 1 micrometer to about 50 micrometers.
26 . The optical composition of claim 21 , wherein the population of glass fiber segments has an average length of at least about 0.75 mm.
27 . The optical composition of claim 21 , wherein the optical composition is essentially free of scattering particles.
28 . The optical composition of claim 21 , wherein the population of quantum dots comprises a passivation layer on surfaces of the quantum dots, wherein the passivation layer comprises a passivant.
29 . The optical composition of claim 28 , wherein the passivant comprises an organic ligand.
30 . The optical composition of claim 21 , wherein the optical composition exhibits a green and red peak wavelength shift of within 3 nm of a QD well dispersed solution.
31 . The optical composition of claim 21 , wherein the optical composition is characterized as having a quantum yield of at least about 70%.
32 . The optical composition of claim 21 , wherein the glass fiber segments represent from about 1 to about 50 wt % of the optical composition.
33 . The optical composition of claim 21 , wherein the population of quantum dots represents from about 0.1 to about 10 wt % of the optical composition.
34 . The optical composition of claim 21 , wherein at least a portion of the population of glass fiber segments is characterized as aligned with one another.
35 . A method, comprising forming a film by extruding the optical composition according to claim 21 .
36 . The method of claim 35 , wherein the film has a thickness in the range of from about 100 to about 300 micrometers.
37 . A display device, the display device comprising an optical composition according to claim 21 in optical communication with a source of illumination.
38 . The display device of claim 37 , wherein the display device is characterized as a mobile computing device.