An imaging element according to an embodiment of the present disclosure includes: a first electrode and a second electrode facing each other; and a photoelectric conversion layer including a p-type semiconductor and an n-type semiconductor, and provided between the first electrode and the second electrode, in which the photoelectric conversion layer has an exciton charge separation rate of 1×10.sup.10 s.sup.−1 to 1×10.sup.16 s.sup.−1 both inclusive in a p-n junction surface formed by the p-type semiconductor and the n-type semiconductors.

The present invention provides: a p-type organic semiconductor material which is able to be produced easily, while having high planarity in a polymer skeleton; and a photoelectric conversion layer, a photoelectric conversion element and an organic thin film solar cell, each of which uses this p-type organic semiconductor material and has high photoelectric conversion efficiency. The present invention specifically provides: a picene derivative which has at least one constituent unit represented by general formula (1); and a photoelectric conversion element which contains (A) the picene derivative serving as a p-type organic semiconductor material and (B) an n-type organic semiconductor material. The details of general formula (1) are as set forth in the description.

An ink composition containing a P-type semiconductor material, an N-type semiconductor material and two or more solvents including a first solvent and a second solvent, wherein the total amount of the first solvent and the second solvent is 70% by weight or more with respect to 100% by weight of all the solvents contained in the ink composition; the boiling point of the first solvent is lower than the boiling point of the second solvent; the boiling point of the first solvent is 120° C. or more and 400° C. or less; and the hydrogen bond Hansen solubility parameter H1 (MPa.sup.0.5) of the first solvent and the hydrogen bond Hansen solubility parameter H2 (MPa.sup.0.5) of the second solvent are in the relation of 0.5≦(H2−H1)≦5.0.

There is a conjugated polymer having a derivative of indacen-4-one having general formula (I): ##STR00001## wherein: R.sub.1 and R.sub.2, same or different, are selected from C.sub.1-C.sub.30 alkyl groups, linear or branched; optionally substituted cycloalkyl groups; optionally substituted aryl groups; optionally substituted heteroaryl groups; C.sub.1-C.sub.30 alkoxyl groups, linear or branched; R.sub.4—O—[CH.sub.2—CH.sub.2—O].sub.m— polyoxyethylene groups, wherein R.sub.4 is selected from C.sub.1-C.sub.30 alkyl groups, linear or branched, and m is an integer ranging from 1 to 4; —R.sub.5—OR.sub.6 groups, wherein R.sub.5 is selected from C.sub.1-C.sub.30 alkylene groups, linear or branched, and R.sub.6 represents a hydrogen atom or is selected from C.sub.1-C.sub.30 alkyl groups, linear or branched, or is selected from R.sub.4—[—OCH.sub.2—CH.sub.2—].sub.p— polyoxyethylene groups, wherein R.sub.4 has the same meanings as reported above and p is an integer ranging from 1 to 4; —COR.sub.7 groups, wherein R.sub.7 is selected from C.sub.1-C.sub.30 alkyl groups, linear or branched; —COOR.sub.8 groups, wherein R.sub.8 is selected from C.sub.1-C.sub.30 alkyl groups, linear or branched; or they represent a —CHO group or a cyano (—CN) group; R.sub.3 is selected from C.sub.1-C.sub.30 alkyl groups, linear or branched; optionally substituted cycloalkyl groups; optionally substituted aryl groups; and C.sub.1-C.sub.30 alkoxyl groups, linear or branched; n is an integer ranging from 10 to 500. There is also a photovoltaic device (or solar device) having a support having the conjugated polymer having a derivative of indacen-4-one.

The present disclosure relates to a novel polymer compound and a method for preparing the same. More particularly, the present disclosure relates to a novel conductive low band gap electron donor polymer compound having high photon absorptivity and improved hole mobility, a method for preparing the same and an organic photovoltaic cell containing the same. Since the conductive polymer compound as a low band gap electron donor exhibits high photon absorptivity and superior hole mobility, it can be usefully used as a material for an organic optoelectronic device such as an organic photodiode (OPD), an organic thin-film transistor (OTFT), an organic light-emitting diode (OLED), an organic photovoltaic cell, etc. as well as in the development of a n-type material.

A transparent electrode material including a conductive layer having an active surface and a second surface, and an adjacent base layer, wherein: ∘ the conductive layer includes a conductive network formed by metallic nanowires and carbon nanotubes encapsulated in a conductive material; ∘ the second surface of the conductive layer has encapsulated nanowires and/or nanotubes projecting therefrom; and ∘ the encapsulated nanowires and/or nanotubes projecting from the second surface of the conductive layer are embedded in the adjacent base layer; whereby the active surface of the conductive layer is smooth and electrically active, and the transparent electrode material has a sheet resistance less than 50 Ω/sq and a transparency greater than 70%.

An organic photoelectric conversion device having an anode, a cathode, an active layer disposed between the anode and the cathode, and a hole injection layer disposed between the anode and the active layer, wherein the anode is an electrode containing an electrically conductive nanosubstance and the hole injection layer is a layer showing a of 80% or more in measurement of the residual film rate after a water rinse treatment.

This invention relates to a supported polymer heterostructure and methods of manufacture. The heterostructure is suitable for use in a range of applications which require semiconductor devices, including photovoltaic devices and light-emitting diodes.

A photoelectric conversion element is provided. The photoelectric conversion element includes a conductive film, an electron transport layer overlying the conductive film, a photoelectric conversion layer overlying the electron transport layer, a hole transport layer overlying the photoelectric conversion layer, and an electrode. The photoelectric conversion layer includes a first material and a second material, each having specific chemical formulae.

The present specification provides a photoactive layer including: an electron donor; and an electron acceptor, in which the electron donor includes: a single molecular material; and a polymer material, a content of the electron donor is higher than a content of the electron acceptor, and in the electron donor, a content of the single molecular material is higher than a content of the polymer material, and an organic solar cell including the same.