A solar battery includes a first electrode, a second electrode, a solar cell, an insulating layer and a gate electrode. The solar cell includes a semiconductor structure, a carbon nanotube and a transparent conductive film. The semiconductor structure includes a P-type semiconductor layer and an N-type semiconductor layer and defines a first surface and a second surface. The carbon nanotube is located on the first surface of the semiconductor. The transparent conductive film is located on the second surface of the semiconductor. The transparent conductive film is formed on the second surface by a depositing method or a coating method.

A photodetector includes a substrate, an interdigital electrode layer and a photoactive layer. The interdigital electrode layer is located or sandwiched between the substrate and the photoactive layer. The interdigital electrode layer includes a first interdigital electrode and a second interdigital electrode. The first interdigital electrode and the second interdigital electrode are spaced from and staggered with each other.

Provided is an organic photoelectric conversion element having improved durability. An organic photoelectric conversion element (10) comprises a layered structure (20) comprising a pair of electrodes (40) comprising a first electrode (42) and a second electrode (44), and an active layer (50) provided between the pair of electrodes, wherein at least one electrode of the pair of electrodes comprise an electrode containing a getter material (46) comprising an conductive material layer (46a) having interstitial spaces (46aa) which a first harmful substance contained in the layered structure permeates and at least one kind of the getter material (46b) which is capable of reacting with the first harmful substance, and the getter material is contained at least a part of the interstitial spaces.

A photoelectric conversion element includes: a first electrode; a second electrode; and a photoelectric conversion layer disposed between the first electrode and the second electrode and containing semiconducting carbon nanotubes and a first material that functions as a donor or an acceptor for the semiconducting carbon nanotubes. The semiconducting carbon nanotubes have light absorption characteristics including a first absorption peak at a first wavelength, a second absorption peak at a second wavelength shorter than the first wavelength, and a third absorption peak at a third wavelength shorter than the second wavelength. The first material is transparent to light in at least one wavelength range selected from the group consisting of a first wavelength range between the first wavelength and the second wavelength and a second wavelength range between the second wavelength and the third wavelength.

Compositions made of laminate comprised of porous carbon nanotube (CNT) are disclosed. Uses of the Compositions, particularly for reducing a formation of a load of a microorganism or of a biofilm, are also disclosed.

A transparent electrode includes a conductive polymer layer, and plural carbon fibers having a diameter larger than the thickness of the conductive polymer layer, in which the carbon fibers are partially embedded in the conductive polymer layer. An organic electronic device includes the transparent electrode.

The present invention relates to a method for preparing a transparent electrode using a carbon nanotube (CNT) film, and more particularly, to a method for preparing a transparent electrode, the method comprising the steps of forming a CNT film on a desired substrate using a dispersed solution of CNT and then reducing/forming metal nanoparticles on the surface of the CNT film. According to the present invention, a transparent electrode in which gold nanoparticles are formed on the surface of high density CNT film having high purity, can be prepared. The inventive transparent electrode has high visible ray penetration and an excellent electrical conductivity by hyperfine metal particles uniformly formed on the surface thereof as well as a uniform increase in electrical conductivity over the whole CNT film, and thus it can be applied to various displays as well as image sensors, solar cells, touch panels, digital papers, electromagnetic shielding agents, static charge preventing agents and the like.

A process of producing a yarn, ribbon or sheet that includes nanofibers in which the process includes forming a yarn, ribbon or sheet comprising nanofibers, and applying an enhancing agent comprising a polymer to the yarn, ribbon or sheet.

A conductive film contains a carbon material, a polymeric compound, and alkali metal atoms. The content of the polymeric compound is not less than 5 mass % and not more than 40 mass %, and the content of the alkali metal atoms is not less than 5.0 mass % and not more than 15.0 mass %.

According to one embodiment, a photoelectric conversion element includes a first electrode, a second electrode, a photoelectric conversion layer, and a first layer. The second electrode includes a base member and a first material portion. The base member includes a plurality of structure bodies including carbon. The first material portion includes a carrier transport material and is provided between the structure bodies. The photoelectric conversion layer is provided between the first electrode and the second electrode. The photoelectric conversion layer includes a material having a perovskite structure. The first layer is provided between the photoelectric conversion layer and the second electrode. The first layer includes the carrier transport material.