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    Polymer Photovoltaic Cell with an Inverted Structure and Process for its Preparation
    2.
    发明申请
    Polymer Photovoltaic Cell with an Inverted Structure and Process for its Preparation 审中-公开

    公开(公告)号：US20200067003A1

    公开(公告)日：2020-02-27

    申请号：US16466492

    申请日：2018-02-21

    申请人： ENI S.P.A.

    发明人： Alessandra Cominetti ,  Riccardo Po

    IPC分类号： H01L51/42 ,  H01L51/00 ,  C01G39/02 ,  H01L51/50

    摘要： Polymeric photovoltaic cell (or solar cell) with an inverted structure comprising: an anode; a first anode buffer layer; an active layer comprising at least one photoactive organic polymer as the electron donor and at least one organic electron acceptor compound; a cathode buffer layer; a cathode; wherein between said first anode buffer layer and said active layer a second anode buffer layer is placed comprising a hole transporting material, said hole transporting material being obtained through a process comprising: reacting at least one heteropoly acid containing at least one transition metal belonging to group 5 or 6 of the Periodic Table of the Elements; with at least an equivalent amount of a salt or a complex of a transition metal belonging to group 5 or 6 of the Periodic Table of the Elements with an organic anion, or with an organic ligand; in the presence of at least one organic solvent selected from alcohols, ketones, esters, preferably alcohols. Said polymer photovoltaic cell (or solar cell) with an inverted structure displays high photoelectric conversion efficiency values (η), i.e. a photoelectric conversion efficiency (η) greater than or equal to 4.5%, and good open circuit voltage (Voc), short-circuit current density (Jsc) and fill factor (FF) values. Furthermore, said polymer photovoltaic cell (or solar cell) with an inverted structure is able to maintain said values over time, in particular, in terms of photoelectric conversion efficiency (η).

    PROCESS FOR PREPARING POLYPROPYLENE CARBONATE
    6.
    发明申请
    PROCESS FOR PREPARING POLYPROPYLENE CARBONATE 有权

    公开(公告)号：US20220220253A1

    公开(公告)日：2022-07-14

    申请号：US17609203

    申请日：2020-05-07

    申请人： ENI S.P.A.

    发明人： Paolo Biagini ,  Riccardo Po ,  Simona Losio ,  Massimiliano Brivio

    IPC分类号： C08G64/02 ,  C08G64/34 ,  C07F1/00

    摘要： There is a process for the preparation of polypropylene carbonate having the step of copolymerization of propylene oxide and carbon dioxide (CO2) in the presence of a catalytic system including: at least one catalyst selected from complexes of a transition metal having general formula (I): at least one co-catalyst selected from: (a) ionic compounds having general formula (II): and (b) ionic compounds having general formula (III)

    Polymer photovoltaic cell with an inverted structure and process for its preparation
    7.
    发明授权
    Polymer photovoltaic cell with an inverted structure and process for its preparation 有权

    公开(公告)号：US11374186B2

    公开(公告)日：2022-06-28

    申请号：US16466492

    申请日：2018-02-21

    申请人： ENI S.P.A.

    发明人： Alessandra Cominetti ,  Riccardo Po

    IPC分类号： H01L31/044 ,  H01L51/42 ,  C01G39/02 ,  H01L51/00 ,  H01L51/50

    摘要： Polymeric photovoltaic cell (or solar cell) with an inverted structure comprising: an anode; a first anode buffer layer; an active layer comprising at least one photoactive organic polymer as the electron donor and at least one organic electron acceptor compound; a cathode buffer layer; a cathode; wherein between said first anode buffer layer and said active layer a second anode buffer layer is placed comprising a hole transporting material, said hole transporting material being obtained through a process comprising: reacting at least one heteropoly acid containing at least one transition metal belonging to group 5 or 6 of the Periodic Table of the Elements; with at least an equivalent amount of a salt or a complex of a transition metal belonging to group 5 or 6 of the Periodic Table of the Elements with an organic anion, or with an organic ligand; in the presence of at least one organic solvent selected from alcohols, ketones, esters, preferably alcohols. Said polymer photovoltaic cell (or solar cell) with an inverted structure displays high photoelectric conversion efficiency values (η), i.e. a photoelectric conversion efficiency (η) greater than or equal to 4.5%, and good open circuit voltage (Voc), short-circuit current density (Jsc) and fill factor (FF) values. Furthermore, said polymer photovoltaic cell (or solar cell) with an inverted structure is able to maintain said values over time, in particular, in terms of photoelectric conversion efficiency (η).