Quantum dot light enhancement substrate
View Patent ↗A component including a substrate, at least one layer including a color conversion material including quantum dots disposed over the substrate, and a layer including a conductive material (e.g., indium-tin-oxide) disposed over the at least one layer. (Embodiments of such component are also referred to herein as a QD light-enhancement substrate (QD-LES).) In certain preferred embodiments, the substrate is transparent to light, for example, visible light, ultraviolet light, and/or infrared radiation. In certain embodiments, the substrate is flexible. In certain embodiments, the substrate includes an outcoupling element (e.g., a microlens array). A film including a color conversion material including quantum dots and a conductive material is also provided. In certain embodiments, a component includes a film described herein. Lighting devices are also provided. In certain embodiments, a lighting device includes a film described herein. In certain embodiments, a lighting device includes a component described herein.
1. A component comprising a substrate comprising a material that is transparent to light within a predetermined range of wavelengths, a layer comprising a predetermined arrangement of features disposed over a predetermined region of a surface of the substrate, wherein at least a portion of the features comprise a color conversion material comprising quantum dots, and a conductive material disposed over at least a portion of the layer, the conductive material being transparent to light within a second predetermined range of wavelengths, and wherein the component further includes one or more outcoupling features disposed on a surface of the substrate opposite the color conversion material.
2. A component in accordance with claim 1 wherein the conductive material is disposed in a second predetermined arrangement, and wherein the size of the features comprising color conversion material are smaller than the size of the features of the second predetermined arrangement.
3. A component in accordance with claim 1 wherein the predetermined arrangement comprises a dithered arrangement.
4. A component in accordance with claim 1 wherein the predetermined arrangement includes features comprising color conversion material and features comprising material with a refractive index that is not the same as that of the color conversion material.
5. A component in accordance with claim 1 wherein the predetermined arrangement includes features comprising color conversion material and features comprising material with outcoupling capability.
6. A component in accordance with claim 1 wherein the predetermined arrangement includes features comprising color conversion material and features comprising material with outcoupling and non-scattering capability.
7. A component in accordance with claim 1 wherein at least a portion of the features including color conversion material are optically isolated from other features including color conversion material.
8. A component in accordance with claim 7 wherein at least a portion of at least a portion of the features including color conversion material are optically isolated from other features including color conversion material by air.
9. A component in accordance with claim 7 wherein at least a portion of at least a portion of the features including color conversion material are optically isolated from other features including color conversion material by a lower or higher refractive index material.
10. A component in accordance with claim 1 wherein reflective material is included in spaces between at least a portion of the features including color conversion material.
11. A component in accordance with claim 1 wherein the predetermined arrangement comprises features including color conversion material, features comprising reflective material, and features comprising scatterers.
12. A component in accordance with claim 1 wherein the component further includes a thin film interference filter between the substrate and color conversion material.
13. A component in accordance with claim 1 wherein the color conversion material further comprises a host material in which the quantum dots are dispersed.
14. A component in accordance with claim 1 wherein the color conversion material further includes scatterers.
15. A component in accordance with claim 1 wherein a first portion of the features includes quantum dots capable of emitting blue light, a second portion of the features includes quantum dots capable of emitting green light, a third portion of the features includes quantum dots capable of emitting yellow light, and a fourth portion of the features includes quantum dots capable of emitting red light.
16. A component in accordance with claim 1 wherein a first portion of the features includes optically transparent scatterers or non-scattering material, a second portion of the features includes quantum dots capable of emitting green light, a third portion of the features includes quantum dots capable of emitting yellow light, and a fourth portion of the features includes quantum dots capable of emitting red light.
17. A component in accordance with claim 1 wherein a first portion of the features includes quantum dots capable of emitting red light, a second portion of the features includes quantum dots capable of emitting green light, and a third portion of the features includes quantum dots capable of emitting blue light.
18. A component in accordance with claim 1 wherein a first portion of the features includes optically transparent scatterers or non-scattering material, a second portion of the features includes quantum dots capable of emitting red light, and a third portion of the features includes quantum dots capable of emitting green light.
19. A component in accordance with claim 1 wherein a first portion of the features includes quantum dots capable of emitting blue light, and a second portion of the features includes quantum dots capable of emitting yellow light.
20. A component in accordance with claim 1 wherein a first portion of the features includes optically transparent scatterers or non-scattering material, and a second portion of the features includes quantum dots capable of emitting yellow light.
21. A lighting device including a component in accordance with claim 1 , wherein the conductive material acts as an electrode of the device.
22. A component in accordance with claim 1 wherein the color conversion material has an index of refraction greater than or equal to the index of refraction of the conductive material.
23. A component in accordance with claim 1 wherein the host material has an index of refraction greater than or equal to the index of refraction of the conductive material.
24. A component in accordance with claim 1 wherein light emitted from the surface of the component is substantially uniform across a predetermined region of the substrate surface.
25. A component in accordance with claim 1 a reflective material is included around at least a portion of the edges of the substrate.
26. A component in accordance with claim 1 wherein a first portion of the features includes quantum dots capable of emitting red light, a second portion of the features includes quantum dots capable of emitting orange light, a third portion of the features includes quantum dots capable of emitting yellow light, a fourth portion of the features includes quantum dots capable of emitting green light, and a fifth portion of the features includes quantum dots capable of emitting blue light.
27. A component in accordance with claim 1 wherein a first portion of the features includes quantum dots capable of emitting red light, a second portion of the features includes quantum dots capable of emitting orange light, a third portion of the features includes quantum dots capable of emitting yellow light, a fourth portion of the features includes quantum dots capable of emitting green light, and a fifth portion of the features includes optically transparent scatterers or non-scattering material.