SINGLE CONFORMAL JUNCTION NANOWIRE PHOTOVOLTAIC DEVICES

    公开(公告)号:SG159511A1

    公开(公告)日:2010-03-30

    申请号:SG2010007151

    申请日:2007-08-22

    Applicant: GEN ELECTRIC

    Abstract: In some embodiments, the present invention is directed to photovoltaic devices (e.g., solar cells) comprising elongated nanostructures coated with a thin conformal coating. Typically, such a conformal coating provides a substantially continuous charge separating junction. Depending on the embodiment, such devices can comprise a p-n junction (100), a p-i-n junction (400) (with a thin intrinsic tunneling layer in between the p and n layers), and/or a heterojunction (600). In all cases, however, the elongated nanostructures are active photovoltaic (PV) elements in the photovoltaic device. Additionally, the present invention is also directed at methods of making and using such devices. Such photovoltaic or solar cell devices are likely to have cost parity with thin film solar cells, but with higher efficiency due to a charge separating junction that is conformal. Additionally, the nanostructures provide excellent light trapping and optical absorption properties.

    EMETTEURS DE CHAMP A NANOTIGES DECLENCHES

    公开(公告)号:FR2891662A1

    公开(公告)日:2007-04-06

    申请号:FR0607919

    申请日:2006-09-11

    Applicant: GEN ELECTRIC

    Abstract: Dans un procédé de réalisation d'un émetteur de champ, au moins un montant (120) est formé sur un substrat semi-conducteur (110). Le montant (120) s'étend vers le haut à partir du substrat (110). Le montant (120) est monocristallin avec le substrat (110). Une couche diélectrique (130) est déposée sur le substrat (110). La couche diélectrique (130) définit un passage (132) à travers celle-ci autour du montant (120). Une couche de grille conductrice (140) est appliquée à la couche diélectrique (130), de telle sorte que la couche de grille conductrice (140) définisse une ouverture qui est juxtaposée au passage (132). On fait croître au moins une nanostructure (150) vers le haut à partir de la surface supérieure du montant (120).

    X-ray generation using a secondary emission electron source

    公开(公告)号:GB2446505A

    公开(公告)日:2008-08-13

    申请号:GB0802098

    申请日:2008-02-05

    Applicant: GEN ELECTRIC

    Abstract: A method and apparatus are provided for generating high frequency electromagnetic energy, such as x-rays, using a secondary electron emission source 10. A primary electron emitter 20 provides a primary electron current 26 directed towards a secondary electron emitter 16. The secondary emission member 16 then generates a secondary electron current 28 which causes x-ray generation when impinging upon an anode. The primary electron source 20 may be a field emitter array, a ferro-electric emitter (see Fig 6), or a thermionic emitter (see Fig 5). The secondary electron emitter may be formed of a diamond-like substance or other material with a high negative electron affinity, so that stream of secondary electrons has a current greater than that of the primary electron stream. The x-ray generator may be incorporated into a computed tomography imaging system (see Figs 9 and 10).

    SINGLE CONFORMAL JUNCTION NANOWIRE PHOTOVOLTAIC DEVICES

    公开(公告)号:SG140564A1

    公开(公告)日:2008-03-28

    申请号:SG2007061583

    申请日:2007-08-22

    Applicant: GEN ELECTRIC

    Abstract: SINGLE CONFORMAL JUNCTION NANOWIRE PHOTOVOLTAIC DEVICES In some embodiments, the present invention is directed to photovoltaic devices (e.g., solar cells) comprising elongated nanostructures coated with a thin conformal coating. Typically, such a conformal coating provides a substantially continuous charge separating junction. Depending on the embodiment, such devices can comprise a p-n junction (100), a p-i-n junction (400) (with a thin intrinsic tunneling layer in between the p and n layers), and/or a heterojunction (600). In all cases, however, the elongated nanostructures are active photovoltaic (PV) elements in the photovoltaic device. Additionally, the present invention is also directed at methods of making and using such devices. Such photovoltaic or solar cell devices are likely to have cost parity with thin film solar cells, but with higher efficiency due to a charge separating junction that is conformal. Additionally, the nanostructures provide excellent light trapping and optical absorption properties.

    A method of making a nano-structured field emitter

    公开(公告)号:GB2435542A

    公开(公告)日:2007-08-29

    申请号:GB0618279

    申请日:2006-09-18

    Applicant: GEN ELECTRIC

    Abstract: In a method of making a field emitter, at least one post 120 is formed on a semiconductor substrate 110. The post 120 extends upwardly from the substrate 110. The post 120 is monocrystalline with the substrate 110. A dielectric layer 130 is deposited on the substrate 110, the dielectric layer (130) defining a via 132 therethrough about the post 120. A conductive gate electrode layer 140 is applied to the dielectric layer 130 so that the conductive gate layer 140 defines an opening that is juxtaposed with the via 132. At least one nanostructure 150 is grown upwardly from the top surface of the post 120. The at least one nanostructure may comprise a carbon nanotube or an inorganic nano-rod.

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