INVERTED POLYMER PHOTOVOLTAIC CELL AND METHOD FOR PREPARATION THEREOF

    公开(公告)号:US20230309371A1

    公开(公告)日:2023-09-28

    申请号:US18020201

    申请日:2021-08-06

    申请人: ENI S.P.A.

    摘要: An inverted polymer photovoltaic cell (or solar cell) includes an anode; a first anodic interlayer (buffer layer) based on PEDOT:PSS [poly(3,4-ethylenedioxythiophene):polystyrene sulfonate]; an active layer having at least one photoactive organic polymer as an electron donor and at least one electron acceptor organic compound; a cathodic interlayer (buffer layer); and a cathode. A second anodic interlayer (buffer layer) includes at least one heteropolyacid and, optionally, at least one amino compound is placed between the first anodic interlayer (buffer layer) and the active layer.
    The inverted polymer photovoltaic cell (or solar cell) shows good values of photoelectric conversion efficiency (power conversion efficiency—PCE) (η) and, in particular, a good level of adhesion between the different layers, more specifically between the active layer and the first anodic interlayer (buffer layer).

    INDACEN-4-ONE DERIVATIVES, PROCESS FOR THEIR PREPARATION AND POLYMERS CONTAINING THEM

    公开(公告)号:US20180244691A1

    公开(公告)日:2018-08-30

    申请号:US15573865

    申请日:2016-05-16

    申请人: Eni S.p.A.

    摘要: Indacen-4-one derivative having general formula (I) in which: —W and W1, which are the same or different, preferably the same, represent an oxygen atom; a sulfur atom; an N—R3 group in which R3 represents a hydrogen atom, or is selected from linear or branched C1-C20, preferably C2-C10, alkyl groups; —Z and Y, which are the same or different, preferably the same, represent a nitrogen atom; or a C—R4 group in which R4 represents a hydrogen atom, or is selected from linear or branched C1-C20, preferably C2-C10, alkyl groups, optionally substituted cycloalkyl groups, optionally substituted aryl groups, optionally substituted heteroaryl groups, linear or branched C1-C20, preferably C2-C10, alkoxyl groups, R5—O—[CH2—CH2—O]n— polyethyleneoxyl groups in which R5 is selected from linear or branched C1-C20, preferably C2-C10, alkyl groups, and n is an integer ranging from 1 to 4; —R6—OR7 groups in which R6 is selected from linear or branched C1-C20, preferably C2-C10, alkylene groups and R7 represents a hydrogen atom or is selected from linear or branched C1-C20, preferably C2-C10, alkyl groups, or is selected from R5—[—OCH2—CH2—]n— polyethyleneoxyl groups in which R5 has the same meanings as above reported and n is an integer ranging from 1 to 4, —COR8 groups in which R8 is selected from linear or branched C1-C20, preferably C2-C10, alkyl groups, —COOR9 groups in which R9 is selected from linear or branched C1-C20, preferably C2-C10, alkyl groups, or represent a —CHO group, or a cyano group (—CN); —R1 and R2, which are the same or different, preferably the same, are selected from linear or branched C1-C10, preferably C2-C10, alkyl groups, optionally substituted cycloalkyl groups, optionally substituted aryl groups, optionally substituted heteroaryl groups, linear or branched C1-C20, preferably C2-C10, alkoxyl groups, R5—O—[CH2—CH2—O]n— polyethyleneoxyl groups in which R5 has the same meanings as above reported and n is an integer ranging from 1 to 4, —R6—OR7 groups in which R6 and R7 have the same meanings as above reported, —COR8 groups in which R8 has the same meanings as above reported, —COOR9 groups in which R9 has the same meanings as above reported, or represent a —CHO group, or a cyano group (—CN). Said indacen-4-one derivative may advantageously be used in the synthesis of electron-donor polymers, said polymers being a further object of the present invention. Said polymers may advantageously be used in the construction of photovoltaic devices (or solar devices) such as, for example, photovoltaic cells (or solar cells), photovoltaic modules (or solar modules), on either a rigid or flexible support.