Nissan Chemical Industries Limited

Nissan Chemical Corporation

Juro Oshima

Takuji Yoshimoto

Shun Sugawara

This composition for a hole collecting layer of an organic photoelectric conversion element contains: a charge-transporting substance comprising a polyaniline derivative represented by formula (1); a fluorine-based surfactant; and a solvent. The composition provides a thin film suitable for a hole collecting layer of an organic photoelectric conversion element, and is particularly suited for producing an inverse lamination type organic photoelectric conversion element. (In the formula, Rto Reach independently represent a hydrogen atom, etc., but one of Rto Ris a sulfonic acid group, one or more of the remaining Rto Rare a C1-20 alkoxy group, a C1-20 thioalkoxy group, a C1-20 alkyl group, a C2-20 alkenyl group, a C2-20 alkynyl group, a C1-20 haloalkyl group, a C6-20 aryl group, or a C7-20 aralkyl group, and m and n are numbers which satisfy 0&#x2264;m&#x2264;1, 0&#x2264;n&#x2264;1 and m+n=1).

Composition for hole collecting layer of organic photoelectric conversion element

A charge transport varnish containing a charge transport substance, an electron-accepting dopant substance, and an organic solvent, wherein the electron-accepting dopant substance contains one or more types selected from naphthalene disulfonic acid, naphthalene trisulfonic acid, and naphthalene tetrasulfonic acid. This charge transport varnish is suitable for forming a hole collection layer that can be used to produce an organic photoelectric conversion element which exhibits high photoelectric conversion efficiency.

Charge transport varnish

Provided is a composition for a hole trapping layer of an organic photoelectric conversion element, such composition: containing a solvent and a charge-transporting substance comprising a polyaniline derivative represented by formula (1); and providing a thin film that is suitable as a hole trapping layer of an organic photoelectric conversion element and can also be used to produce an inverse lamination type organic photoelectric conversion element. {R-Reach independently denote a hydrogen atom or the like, but one of the R-Rgroups is a sulfonic acid group, one or more of the other R-Rgroups is an alkoxy group having 1-20 carbon atoms, a thioalkoxy group having 1-20 carbon atoms, an alkyl group having 1-20 carbon atoms, an alkenyl group having 2-20 carbon atoms, an alkynyl group having 2-20 carbon atoms, a haloalkyl group having 1-20 carbon atoms, an aryl group having 6-20 carbon atoms or an aralkyl group having 7-20 carbon atoms, and m and n are numbers that satisfy the relationships 0&#x2264;m&#x2264;1, 0&#x2264;n&#x2264;1 and m+n=1.}

Composition for hole trapping layer of organic photoelectric conversion element

A photosensor element that is capable of achieving a good balance between high photoelectric conversion efficiency and low dark current is able to be obtained by using a composition for forming a hole collecting layer of a photosensor element, which contains an organic solvent and a charge-transporting material that is composed, for example, of an aniline derivative or thiophene derivative represented by one of formulae (AA)-(DD) and having a molecular weight of 200-2,000. 

Composition for forming hole collecting layer of photosensor element, and photosensor element

Provided is a composition comprising: a charge-transporting substance that comprises N,N'-diphenylbenzidine; an electron-accepting dopant substance; and an organic solvent. This composition is suitable, for example, as a composition for the anode buffer layer of an organic thin film solar cell, said composition being used to produce a thin film that is suitable for use as an anode buffer layer that makes it possible to achieve an organic thin film solar cell having a high photoelectric conversion efficiency.

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Funabashi, Japan

Juro Oshima