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    Organic photovoltaic cells and compositions thereof
    3.
    发明申请
    Organic photovoltaic cells and compositions thereof 有权

    公开(公告)号：US20210057661A1

    公开(公告)日：2021-02-25

    申请号：US16963082

    申请日：2019-01-17

    Applicant: The Regents of the University of Michigan

    Inventor： Stephen R. Forrest ,  Xiaozhou Che ,  Yongxi Li

    IPC: H01L51/42

    Abstract: Organic photovoltaic cells (OPVs) and their compositions are described herein. In one or more embodiments, the OPV or solar cell includes an anode; a cathode; a first active layer positioned between the anode and the cathode, the first active layer configured to absorb light in a first wavelength spectrum; a second active layer positioned between the anode and the cathode, the second active layer configured to absorb light in a second wavelength spectrum; and a recombination zone positioned between the first active layer and the second active layer.

    ORGANIC OPTOELECTRONIC DEVICE
    4.
    发明申请
    ORGANIC OPTOELECTRONIC DEVICE 有权

    公开(公告)号：US20210020697A1

    公开(公告)日：2021-01-21

    申请号：US16931960

    申请日：2020-07-17

    Applicant: The Regents of the University of Michigan

    Inventor： Stephen R. Forrest ,  Xiaozhou Che ,  Yongxi Li

    IPC: H01L27/30 ,  H01L51/44

    Abstract: An organic optoelectronic device comprises a first electrode, a first infrared photovoltaic subcell positioned over the first electrode, a second infrared photovoltaic subcell positioned over the first near-infrared subcell, and a first visible photovoltaic subcell positioned over the second near-infrared subcell, a second electrode positioned between the second near-infrared photovoltaic subcell and the first visible photovoltaic subcell, and a third electrode positioned over the first visible photovoltaic subcell, wherein the first electrode and the third electrode are held at the same potential relative to the second electrode.

    Highly efficient small molecule multi-junction organic photovoltaic cells
    5.
    发明授权
    Highly efficient small molecule multi-junction organic photovoltaic cells 有权

    公开(公告)号：US11251386B2

    公开(公告)日：2022-02-15

    申请号：US15125690

    申请日：2015-04-06

    Applicant: THE REGENTS OF THE UNIVERSITY OF MICHIGAN

    Inventor： Xiaozhou Che ,  Xin Xiao ,  Stephen R. Forrest

    IPC: H01L51/42 ,  H01L51/00

    Abstract: A highly efficient multi junction photovoltaic device, such as a two, three, or four junction device, is disclosed. The multi-junction device may include a first subcell comprising a first photoactive region and a second subcell comprising a second photoactive region. The first and second photoactive regions are designed to minimize spectral overlap and maximize photocurrent across a broad absorption spectra, such as wavelengths ranging from 400 nm to 900 nm. The device may further include an inter-connecting layer, disposed between the first subcell and the second subcell, that is at least substantially transparent. By introducing a transparent interconnecting layer, a dual element (tandem) cell achieves a power conversion efficiency of 10.0±0.5%. By adding an additional (3rd) sub-cell that absorbs at the second order optical interference maximum within the stack. The triple junction cell significantly improves the quantum efficiency at shorter wavelengths, achieving a power conversion efficiency of 11.1±0.5%. Adding additional sub-cells has been shown to increase power conversion efficiency above 12%.

    HIGHLY EFFICIENT SMALL MOLECULE MULTI-JUNCTION ORGANIC PHOTOVOLTAIC CELLS
    7.
    发明申请
    HIGHLY EFFICIENT SMALL MOLECULE MULTI-JUNCTION ORGANIC PHOTOVOLTAIC CELLS 审中-公开
    高效小分子多结合有机光电池

    公开(公告)号：US20170005284A1

    公开(公告)日：2017-01-05

    申请号：US15125690

    申请日：2015-04-06

    Applicant: THE REGENTS OF THE UNIVERSITY OF MICHIGAN

    Inventor： Xiaozhou Che ,  Xin Xiao ,  Stephen R. Forrest

    IPC: H01L51/42

    CPC classification number: H01L51/4246 ,  H01L51/0046 ,  H01L51/0054 ,  H01L51/0056 ,  H01L51/0059 ,  H01L51/0068 ,  H01L51/0069 ,  H01L51/0072 ,  H01L51/422 ,  Y02E10/549 ,  Y02P70/521

    Abstract: A highly efficient multi junction photovoltaic device, such as a two, three, or four junction device, is disclosed. The multi-junction device may include a first subcell comprising a first photoactive region and a second subcell comprising a second photoactive region. The first and second photoactive regions are designed to minimize spectral overlap and maximize photocurrent across a broad absorption spectra, such as wavelengths ranging from 400 nm to 900 nm. The device may further include an inter-connecting layer, disposed between the first subcell and the second subcell, that is at least substantially transparent. By introducing a transparent interconnecting layer, a dual element (tandem) cell achieves a power conversion efficiency of 10.0±0.5%. By adding an additional (3rd) sub-cell that absorbs at the second order optical interference maximum within the stack. The triple junction cell significantly improves the quantum efficiency at shorter wavelengths, achieving a power conversion efficiency of 11.1±0.5%. Adding additional sub-cells has been shown to increase power conversion efficiency above 12%.

    Abstract translation: 公开了一种高效率的多结光伏器件，例如两个，三个或四个接合器件。 多结器件可以包括包括第一光活性区域的第一子电池和包括第二光活性区域的第二子电池。 第一和第二光活性区域被设计成使光谱重叠最小化并且在宽吸收光谱（例如400nm至900nm的波长）之间最大化光电流。 设备还可以包括设置在第一子电池和第二子电池之间的至少基本透明的连接层。 通过引入透明互连层，双元件（串联）单元实现10.0±0.5％的功率转换效率。 通过添加在堆叠内吸收二阶光学干涉最大值的附加（第三）子单元。 三结电池在较短波长下显着提高了量子效率，实现了11.1±0.5％的功率转换效率。 已经显示添加附加子单元可以提高12％以上的功率转换效率。

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