Interfacial architecture for nanostructured optoelectronic devices
First Claim
1. A method for making an active layer of an optoelectronic device, comprising:
- forming a nanostructured network layer, wherein the nanostructured network layer includes a network of regularly spaced structures with spaces between neighboring structures;
disposing a network-filling material in one or more of the spaces, wherein at least one network-filling material has complementary charge transfer properties with respect to the material of the nanostructured network layer;
disposing an interfacial layer between the nanostructured network layer and the network-filling material; and
configuring the interfacial layer to enhance an efficiency of the resulting active layer includes configuring the interfacial layer such that charge-carriers traveling from the nanostructured network layer to the network-filling material are transported at a different rate than the same type of charge-carriers traveling from the network-filling material to the nanostructured network layer,charge-carriers traveling from the nanostructured network layer to the network-filling material are transported at a different rate than the same type of charge-carriers traveling from the network-filling material to the nanostructured network layer includes disposing a functionalized fullerene on surfaces of structures in the nanostructured network layer.
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Abstract
An optoelectronic apparatus, a method for making the apparatus, and the use of the apparatus in an optoelectronic device are disclosed. The apparatus may include an active layer having a nanostructured network layer with a network of regularly spaced structures with spaces between neighboring structures. One or more network-filling materials are disposed in the spaces. At least one of the network-filling materials has complementary charge transfer properties with respect to the nanostructured network layer. An interfacial layer, configured to enhance an efficiency of the active layer, is disposed between the nanostructured network layer and the network-filling materials. The interfacial layer may be configured to provide (a) charge transfer between the two materials that exhibits different rates for forward versus backward transport; (b) differential light absorption to extend a range of wavelengths that the active layer can absorb; or (c) enhanced light absorption, which may be coupled with charge injection.
55 Citations
15 Claims
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1. A method for making an active layer of an optoelectronic device, comprising:
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forming a nanostructured network layer, wherein the nanostructured network layer includes a network of regularly spaced structures with spaces between neighboring structures; disposing a network-filling material in one or more of the spaces, wherein at least one network-filling material has complementary charge transfer properties with respect to the material of the nanostructured network layer; disposing an interfacial layer between the nanostructured network layer and the network-filling material; and configuring the interfacial layer to enhance an efficiency of the resulting active layer includes configuring the interfacial layer such that charge-carriers traveling from the nanostructured network layer to the network-filling material are transported at a different rate than the same type of charge-carriers traveling from the network-filling material to the nanostructured network layer, charge-carriers traveling from the nanostructured network layer to the network-filling material are transported at a different rate than the same type of charge-carriers traveling from the network-filling material to the nanostructured network layer includes disposing a functionalized fullerene on surfaces of structures in the nanostructured network layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 14, 15)
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11. A method for making an active layer of an optoelectronic device, comprising:
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forming a nanostructured network layer, wherein the nanostructured network layer includes a network of regularly spaced structures with spaces between neighboring structures; disposing a network-filling material in one or more of the spaces, wherein at least one network-filling material has complementary charge transfer properties with respect to the material of the nanostructured network layer; disposing an interfacial layer between the nanostructured network layer and the network-filling material; configuring the interfacial layer to enhance an efficiency of the resulting active layer; wherein forming the nanostructured network layer includes using a technique selected from the group of intercalation and/or grafting of organic or polymeric molecules within a mineral lamellar network; synthesis by electrocrystallisation of hybrid molecular assemblies; impregnation of preformed inorganic gels; synthesis from heterofunctional metallic alkoxides metallic halides or silsesquioxannes; synthesis of hybrid networks through the connection of well-defined functional nanobuilding blocks; templated growth of inorganic or hybrid networks by using organic molecules, macromolecules proteins or fibers as structure directing agents; and templated growth using nanoparticles, followed by removal of the nanoparticles. - View Dependent Claims (12, 13)
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Specification