Abstract:
A photoelectric conversion element includes: a pair of electrodes including a first electrode and a second electrode; a first insulator having a first capacitance, and disposed to make contact with the first electrode; a second insulator having a second capacitance, which is smaller than the first capacitance of the first insulator, and disposed to make contact with the second electrode; and an organic semiconductor receiving a light to generate an electromotive force, and interposed between the first insulator and the second insulator to make contact with them.
Abstract:
The present invention discloses a solar cell having a multi-layered structure that is used to generate, transport, and collect electric charges. The multi-layered nanostructure comprises a cathode, a conducting metal layer, a photo-active layer, a hole-transport layer, and an anode. The photo-active layer comprises a tree-like nanostructure array and a conjugate polymer filler. The tree-like nanostructure array is used as an electron acceptor while the conjugate polymer filler is as an electron donor. The tree-like nanostructure array comprises a trunk part and a branch part. The trunk part is formed in-situ on the surface of the conducting metal layer and is used to provide a long straight transport pathway to transport electrons. The large contact area between the branch part and the conjugate polymer filler provides electron-hole separation.
Abstract:
Photovoltaic devices such as solar cells, hybrid solar cell-batteries, and other such devices may include an active layer disposed between two electrodes, the active layer having perovskite material and other material such as mesoporous material, interfacial layers, thin-coat interfacial layers, and combinations thereof. The perovskite material may be photoactive. The perovskite material may be disposed between two or more other materials in the photovoltaic device. Inclusion of these materials in various arrangements within an active layer of a photovoltaic device may improve device performance. Other materials may be included to further improve device performance, such as, for example: additional perovskites, and additional interfacial layers.
Abstract:
A substrate-supported photoelectrode, which includes an essentially two-dimensional transparent conductive oxide (TCO) film supported by a substrate, wherein the film is doped with at least one element of Group III, and one or more single crystal essentially one-dimensional nanostructures that are integral with the film and grown upwardly therefrom without a boundary layer therebetween, wherein the film and the nanostructures are essentially identical in composition and include zinc oxide or a zinc oxide alloy. Methods for preparing the substrate-supported photoelectrode and solar cells incorporating the substrate-supported photoelectrode are also provided.
Abstract:
The present invention discloses a solar cell having a multi-layered structure that is used to generate, transport, and collect electric charges. The multi-layered nanostructure comprises a cathode, a conducting metal layer, a photo-active layer, a hole-transport layer, and an anode. The photo-active layer comprises a tree-like nanostructure array and a conjugate polymer filler. The tree-like nanostructure array is used as an electron acceptor while the conjugate polymer filler is as an electron donor. The tree-like nanostructure array comprises a trunk part and a branch part. The trunk part is formed in-situ on the surface of the conducting metal layer and is used to provide a long straight transport pathway to transport electrons. The large contact area between the branch part and the conjugate polymer filler provides electron-hole separation.
Abstract:
The present invention discloses a mixed-type heterojunction thin-film solar cell structure and a method for fabricating the same. Firstly, a conductive substrate and a template are provided, and the template has a substrate and an inorganic wire array formed on the substrate. Next, a conjugate polymer layer is formed on the conductive substrate. Next, the inorganic wire array is embedded into the conjugate polymer layer. Next, the substrate is separated from the inorganic wire array. Then, an electrode layer is formed over the inorganic wire array and the conjugate polymer layer. The solar cell structure of the present invention has advantages of flexibility, high energy conversion efficiency and low fabrication cost.
Abstract:
Disclosed herein are hybrid solar cells and methods for fabricating the same. In one aspect, the method is characterized in transferring nanowires from one substrate to another substrate. In another aspect, the method is characterized in having an organic active layer that is not made of [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) and said organic active layer comprises nanowires embedded therein.
Abstract:
Lateral collection photovoltaic (LCP) structures based on micro- and nano-collecting elements are used to collect photogenerated carriers. In one set of embodiments, the collecting elements are arrayed on a conducting substrate. In certain versions, the collecting elements are substantially perpendicular to the conductor. In another set of embodiments, the micro- or nano-scale collecting elements do not have direct physical and electrical contact to any conducting substrate. In one version, both anode and cathode electrodes are laterally arrayed. In another version, the collecting elements of one electrode are a composite wherein a conductor is separated by an insulator, which is part of each collector element, from the opposing electrode residing on the substrate. In still another version, the collection of one electrode structure is a composite containing both the anode and the cathode collecting elements for collection. An active material is positioned among the collector elements.
Abstract:
The present invention discloses a mixed-type heterojunction thin-film solar cell structure and a method for fabricating the same. Firstly, a conductive substrate and a template are provided, and the template has a substrate and an inorganic wire array formed on the substrate. Next, a conjugate polymer layer is formed on the conductive substrate. Next, the inorganic wire array is embedded into the conjugate polymer layer. Next, the substrate is separated from the inorganic wire array. Then, an electrode layer is formed over the inorganic wire array and the conjugate polymer layer. The solar cell structure of the present invention has advantages of flexibility, high energy conversion efficiency and low fabrication cost.
Abstract:
An organic solar cell includes; a cathode, an anode disposed substantially opposite the cathode, a photoactive layer disposed between the cathode and the anode, wherein the photoactive layer includes an electron donor, an electron acceptor, and a nanostructure, and wherein the nanostructure includes an electron conductive material selected from the group consisting of a semiconductor element, a semiconductor compound, a semiconductor carbon material, a metallic carbon material which is surface-treated with a hole blocking material, a metal which is surface-treated with a hole blocking material and a combination thereof.