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    COMPOSITIONS AND METHODS FOR THE DOWNCONVERSION OF LIGHT
    21.
    发明申请
    COMPOSITIONS AND METHODS FOR THE DOWNCONVERSION OF LIGHT 审中-公开
    光的透过性的组成和方法

    公开(公告)号：US20160238455A1

    公开(公告)日：2016-08-18

    申请号：US15045011

    申请日：2016-02-16

    Applicant: Massachusetts Institute of Technology

    Inventor： Daniel N. Congreve ,  Nicholas John Thompson ,  Mark W.B. Wilson ,  Mengfei Wu ,  Marc A. Baldo ,  Moungi G. Bawendi ,  Vladimir Bulovic

    IPC: G01J9/00 ,  C09K11/66 ,  H01L51/50

    Abstract: The present invention generally relates to composition and methods for downconverting light. In some embodiments, the composition and methods comprise an organic material, a nanocrystal, and a ligand capable of facilitating energy transfer between the organic material and the nanocrystal. In certain embodiments, the nanocrystal has a first excited energy state with an energy less than a triplet energy state of the organic material. The organic material, in some embodiments, may be aromatic and/or include one or more pi-conjugated carbon-carbon double bonds. In some cases, incident light may be absorbed by the organic material to produce two triplet excitons. The triplet excitons may then transfer to the nanocrystal via the ligand, where they can undergo recombination, resulting in the formation low energy photons.

    Abstract translation: 本发明一般涉及用于降光转换光的组合物和方法。 在一些实施方案中，组合物和方法包括能够促进有机材料和纳米晶体之间的能量转移的有机材料，纳米晶体和配体。 在某些实施方案中，纳米晶体具有能量小于有机材料的三线态能量状态的第一激发能态。 在一些实施方案中，有机材料可以是芳族的和/或包括一个或多个π-共轭碳 - 碳双键。 在一些情况下，入射光可以被有机材料吸收以产生两个三重态激子。 然后，三线态激子可以通过配体转移到纳米晶体，在那里它们可以进行复合，导致形成低能量光子。

    Visibly transparent, luminescent solar concentrator
    26.
    发明授权
    Visibly transparent, luminescent solar concentrator 有权

    公开(公告)号：US11652181B2

    公开(公告)日：2023-05-16

    申请号：US17100425

    申请日：2020-11-20

    Applicant: MASSACHUSETTS INSTITUTE OF TECHNOLOGY

    Inventor： Richard Royal Lunt ,  Vladimir Bulovic ,  Miles Clark Barr

    IPC: H01L31/055

    CPC classification number: H01L31/055 ,  Y02E10/52

    Abstract: A visibly transparent luminescent solar concentrator (LSC) is disclosed. The LSC includes a transparent substrate having at least one edge surface. A dye layer is coupled to the substrate, the dye layer having a peak absorption wavelength outside the visible band, the dye layer being configured to re-emit light at a peak emission wavelength outside the visible band, at least a portion of the re-emitted light being waveguided to the edge surface of the substrate. A photovoltaic device is coupled to the edge surface of the transparent substrate, the photovoltaic device being configured to absorb light at the peak emission wavelength and generate electrical energy.

    TRANSPARENT PHOTOVOLTAIC CELLS
    27.
    发明申请
    TRANSPARENT PHOTOVOLTAIC CELLS 有权

    公开(公告)号：US20230052989A1

    公开(公告)日：2023-02-16

    申请号：US17866362

    申请日：2022-07-15

    Applicant: MASSACHUSETTS INSTITUTE OF TECHNOLOGY

    Inventor： Vladimir Bulovic ,  Richard Royal Lunt

    IPC: H01L51/42 ,  H01L27/30

    Abstract: A transparent photovoltaic cell and method of making are disclosed. The photovoltaic cell may include a transparent substrate and a first active material overlying the substrate. The first active material may have a first absorption peak at a wavelength greater than about 650 nanometers. A second active material is disposed overlying the substrate, the second active material having a second absorption peak at a wavelength outside of the visible light spectrum. The photovoltaic cell may also include a transparent cathode and a transparent anode.

    Transparent photovoltaic cells
    28.
    发明授权
    Transparent photovoltaic cells 有权

    公开(公告)号：US11424423B2

    公开(公告)日：2022-08-23

    申请号：US16848751

    申请日：2020-04-14

    Applicant: MASSACHUSETTS INSTITUTE OF TECHNOLOGY

    Inventor： Vladimir Bulovic ,  Richard Royal Lunt

    IPC: H01L51/46 ,  H01L51/42 ,  H01L27/30 ,  H01L51/44

    Abstract: A transparent photovoltaic cell and method of making are disclosed. The photovoltaic cell may include a transparent substrate and a first active material overlying the substrate. The first active material may have a first absorption peak at a wavelength greater than about 650 nanometers. A second active material is disposed overlying the substrate, the second active material having a second absorption peak at a wavelength outside of the visible light spectrum. The photovoltaic cell may also include a transparent cathode and a transparent anode.

    VISIBLY TRANSPARENT, LUMINESCENT SOLAR CONCENTRATOR
    29.
    发明申请
    VISIBLY TRANSPARENT, LUMINESCENT SOLAR CONCENTRATOR 审中-公开

    公开(公告)号：US20180248064A1

    公开(公告)日：2018-08-30

    申请号：US15967165

    申请日：2018-04-30

    Applicant: MASSACHUSETTS INSTITUTE OF TECHNOLOGY

    Inventor： Richard Royal Lunt ,  Vladimir Bulovic ,  Miles Clark Barr

    IPC: H01L31/055

    CPC classification number: H01L31/055 ,  Y02E10/52

    Abstract: A visibly transparent luminescent solar concentrator (LSC) is disclosed. The LSC includes a transparent substrate having at least one edge surface. A dye layer is coupled to the substrate, the dye layer having a peak absorption wavelength outside the visible band, the dye layer being configured to re-emit light at a peak emission wavelength outside the visible band, at least a portion of the re-emitted light being waveguided to the edge surface of the substrate. A photovoltaic device is coupled to the edge surface of the transparent substrate, the photovoltaic device being configured to absorb light at the peak emission wavelength and generate electrical energy.

    Methods and compositions for the upconversion of light
    30.
    发明授权
    Methods and compositions for the upconversion of light 有权

    公开(公告)号：US09944847B2

    公开(公告)日：2018-04-17

    申请号：US15045028

    申请日：2016-02-16

    Applicant: Massachusetts Institute of Technology

    Inventor： Marc A. Baldo ,  Daniel N. Congreve ,  Nicholas John Thompson ,  Mark W. B. Wilson ,  Mengfei Wu ,  Moungi G. Bawendi ,  Vladimir Bulovic

    IPC: G02F1/35 ,  C09K11/56 ,  G01J1/58 ,  G02F2/02

    CPC classification number: C09K11/562 ,  G01J1/58

    Abstract: The present invention generally relates to composition and methods for upconverting light. In some embodiments, the composition and methods comprise an organic material, a nanocrystal, and a ligand capable of facilitating energy transfer between the nanocrystal and the organic material. In certain embodiments, the nanocrystal has a first excited energy state with an energy greater than a triplet state of the organic material. The organic material, in some embodiments, may be aromatic and/or include one or more pi-conjugated carbon-carbon double bonds. In some cases, incident light may be absorbed by the nanocrystal to produce triplet excitons. The triplet excitons may then transfer from the nanocrystal to the organic material and undergo triplet-triplet annihilation, creating a singlet state of approximately twice the energy of the triplet exciton. In certain embodiments, the singlet state fluoresces, resulting in the formation of a high energy photon.

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