MAGNETIC PHASE TRANSITION COMPOSITE MATERIAL

    公开(公告)号:WO2019138253A1

    公开(公告)日:2019-07-18

    申请号:PCT/GB2019/050098

    申请日:2019-01-15

    CPC classification number: H01F1/0063 H01F1/0054 H01F1/012 H01F1/017

    Abstract: A phase transition composite material (1) includes a dispersion of single-domain magnetic nanoparticles (2) and an elastic encapsulant (3) arranged to separate the nanoparticles (2). The composite material (1) is deformable between first and second states. In the first state the material is relaxed and in the second state the material is stressed. In the first state, the magnetizations of the magnetic nanoparticles (2) are less ordered (e.g., the magnetic nanoparticles (2) exhibit superparamagnetism) and, in the second state, the magnetizations of the magnetic nanoparticles (2) are more ordered (e.g., the magnetic nanoparticles (2) exhibit superferromagnetism or superantiferromagnetism).

    ENHANCED EFFICIENCY POLYMER SOLAR CELLS USING ALIGNED MAGNETIC NANOPARTICLES
    5.
    发明申请
    ENHANCED EFFICIENCY POLYMER SOLAR CELLS USING ALIGNED MAGNETIC NANOPARTICLES 审中-公开
    使用对齐的磁性纳米颗粒提高效率的聚合物太阳能电池

    公开(公告)号:WO2013142876A1

    公开(公告)日:2013-09-26

    申请号:PCT/US2013/033759

    申请日:2013-03-25

    Inventor: GONG, Xiong

    Abstract: Polymer solar cells with enhanced efficiency utilize an active layer formed of a composite of polymer/fullerene and Fe 3 O 4 nanoparticles. During the formation of the solar cell, the composite mixture is subjected to an external magnetic field that causes the nanoparticles to align their magnetic dipole moments along the direction of the magnetic field, so as to form a plurality of Fe 3 O 4 nanochains. These nanochains serve to adjust the morphology and phase separation of the polymer/fullerene, and also serve to induce an internal electrical field by spin-polarization of the nanochains serve to increase the charge separation and charge transport processes in the solar cell, enhancing the short-current density (J sc ) and ultimately, the photoelectric converted efficiency (PCE) of the solar cell.

    Abstract translation: 具有增强效率的聚合物太阳能电池利用由聚合物/富勒烯和Fe 3 O 4纳米颗粒的复合物形成的活性层。 在太阳能电池的形成期间,复合混合物受到外部磁场的作用,该外部磁场使得纳米颗粒沿着磁场方向对准它们的磁偶极矩,从而形成多个Fe 3 O 4纳米链。 这些纳米链用于调节聚合物/富勒烯的形态和相分离,并且还用于通过纳米链的自旋极化来引起内部电场,用于增加太阳能电池中的电荷分离和电荷传输过程,增强短路 - 电流密度(Jsc)以及最终的太阳能电池的光电转换效率(PCE)。

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