Fabrication of nanostructured devices
Embodiments of the invention relate to methods useful in the fabrication of nanostructured devices for optics, energy generation, displays, consumer electronics, life sciences and medicine, construction and decoration. Instead of nanostructuring using colloids of particles, special vacuum deposition methods, laser interference systems (holography), and other low-throughput limited surface area techniques, we suggest to use nanotemplate created by novel nanolithography method, “Rolling mask” lithography. This method allows fast and inexpensive fabrication of nanostructures on large areas of substrate materials in conveyor-type continuous process. Such nanotemplate is then used for selective deposition of functional materials. One of embodiments explains deposition of functional materials in the exposed and developed areas of the substrate. Another embodiment uses selective deposition of the functional material on top of such template. Alternatively, nanotemplate is deposited and patterned on functional material, and then used as an etch mask to transfer nanostructure into the functional material using dry or wet etching process.
1. A method for fabrication of nanostructured devices comprising of coating a surface of device with photosensitive material patterning photosensitive material using rolling mask lithography, which includes exposing photosensitive material with a light, generated by a light source, wherein such light is passed through a mask in the shape of cylinder, cone or sphere, and in addition, structured film is laminated on the outer surface of such mask; an exposure is performed in a dynamic regime while such mask is rolled over the substrate coated with a photosensitive material.
2. A method according to claim 1 wherein photosensitive material is photoresist, which is developed after the patterning.
3. A method according to claim 1 wherein photosensitive material is self-assembled monolayer.
4. A method according to claim 1 wherein photosensitive material is sol-gel material.
5. A method according to claim 2 wherein additional material is deposited over device's surface using patterned photoresist material as a template.
6. A method according to claim 3 wherein additional material is deposited over device's surface using patterned self-assembled monolayer as a template.
7. A method according to claim 2 wherein in addition a device's surface is etched using patterned photoresist as an etch mask.
8. A method according to claim 1 wherein a structured film is an elastomeric phase mask.
9. A method according to claim 1 wherein a structured film is a plasmonic layer.
10. A method according to claim 1 wherein the nanostructured device is a solar cell, flat panel display, fuel cells and other device, which includes nanostructured electrodes.
11. A method according to claim 1 wherein the nanostructured device is a light emitting diode, display, or other device, which includes a plasmonic light extraction layer.
12. A method according to claim 1 wherein the nanostructured device is a photonic crystal.
13. A method according to claim 1 wherein the nanostructured device is a quantum dot array.
14. A method according to claim 1 wherein the nanostructured device is a diffractive optical element or computer generated hologram.
15. A method according to claim 1 wherein the nanostructured device is a solar cell, image sensor, information display, architectural window or any other device or product, which has anti-reflective properties.
16. A method according to claim 1 wherein the nanostructured device is a solar cell, image sensor, information display, architectural window or any other device or product, which has anti-glare properties.
17. A method according to claim 1 wherein the nanostructured device a solar cell, image sensor, information display, architectural window, aircraft, wind turbine or any other device which has anti-icing properties.
18. A method according to claim 1 wherein the nanostructured device is a solar cell, image sensor, information display, architectural window, aircraft, wind turbine or any other device which has self-cleaning properties.
19. A method according to claim 1 wherein the nanostructured device has at least two enhanced properties simultaneously, for example, anti-reflective and self-cleaning, anti-glare and self-cleaning, or others.