Nanostructure material methods and devices
View Patent ↗In one aspect, structures are provided that comprise (a) a one-dimensional periodic plurality of layers, wherein at least two of the layers have a refractive index differential sufficient to provide effective contrast; and (b) one or more light-emitting nanostructure materials effectively positioned with respect to the refractive index differential interface, wherein the structure provides a polarized output emission.
1. A structure comprising:
(a) a one-dimensional periodic plurality of layers, wherein at least two of the layers have a refractive index differential sufficient to provide effective contrast; and
(b) one or more light-emitting nanostructure materials effectively positioned with respect to the refractive index differential interface,
wherein the structure provides a polarized output emission.
2. The structure of claim 1 comprising:
a) a polymeric layer disposed on a substrate, the polymeric layer comprising one or more polymers, the polymeric layer having a patterned surface comprising a plurality of recesses;
b) a layer of a material having a higher index of refraction than the polymeric layer disposed over the patterned surface of the polymeric layer.
3. The structure of claim 2 wherein the polymeric layer comprises the one or more light-emitting nanostructure materials.
4. The structure of claim 2 further comprising a further layer above the higher index of refraction material layer.
5. The structure of claim 4 wherein the further layer comprises the one or more light-emitting nanostructure materials.
6. The structure of claim 1 wherein the one or more light-emitting nanostructure materials are configured in one or more linear grating.
7. The structure of claim 1 wherein the structure comprises two or more photonic crystal regions.
8. The structure of claim 1 wherein the higher index of refraction material layer comprises the one or more light-emitting nanostructure materials.
9. The structure of claim 1 wherein the one or more light-emitting nanostructure materials comprise quantum dots, fluorescent dyes, or phosphors.
10. The structure of claim 1 wherein the structure provides a light-emitting device, a photodetector device, a chemical sensor, a photovoltaic device, a fluorescent backlight film, a diode, a transistor, or a biologically active surface.
11. The structure of claim 1 wherein the structure provides an output emission that is increased relative to a control structure.
12. The structure of claim 1 wherein the structure provides a linearly polarized output.
13. The structure of claim 1 wherein the structure provides a circular or elliptically polarized output.
14. A method of forming a photonic crystal system with a polarized output emission, comprising:
applying on a substrate surface a polymeric layer comprising one or more polymer and a plurality of light-emitting nanocrystals;
disposing a layer of a material having a higher index of refraction than the polymeric layer over the polymeric layer to provide a photonic crystal system,
wherein the photonic crystal system provides a polarized output emission.
15. The method of claim 14 further comprising removing the polymeric layer from the substrate and then transferring the removed polymeric layer to a distinct substrate.
16. The method of claim 14 further comprising curing the polymeric layer.
17. The method of claim 14 wherein the polymeric layer is applied by electrohydrodynamic-jet printing.