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    A COMPOSITE NANOPARTICLE AND PHOTODETECTOR COMPRISING THE NANOPARTICLE
    11.
    发明申请
    A COMPOSITE NANOPARTICLE AND PHOTODETECTOR COMPRISING THE NANOPARTICLE 审中-公开

    公开(公告)号：US20190027631A1

    公开(公告)日：2019-01-24

    申请号：US16068704

    申请日：2016-12-28

    Applicant: Nokia Technologies Oy

    Inventor： Nadine HARRIS ,  Richard WHITE

    IPC: H01L31/112 ,  H01L31/0352

    CPC classification number: H01L31/112 ,  H01L31/0232 ,  H01L31/0352 ,  H01L31/035209 ,  H01L31/035218 ,  H01L31/035236

    Abstract: A composite nanoparticle (1) comprises an inner core (3) made of a transparent dielectric material, a first coating layer (5) made of a plasmonic material which overlays the inner core (3) and a second coating layer (7) made of a semiconductor material overlaying the first coating layer (5). Incident light is absorbed by generating surface plasmons at a boundary (4) between the inner core (3) and the first coating layer (5) and at a boundary (6) between the first coating layer (5) and the second coating layer (7) in order to increase the light absorption and thus the exciton generation by the second coating layer (7). The structure of composite particle (1) also allows for tuning of the resonance of the surface plasmons which tunes the frequency of light, or other electromagnetic radiation, that is detected. A photodetector for detecting the absorbed light comprises a channel (25) which is a layer of a two-dimensional material between a source electrode (23) and a drain electrode (24), and a layer (27) of a plurality of composite particles (1). The layer (27) acts as a photogate of the field effect transistor (21).

    DEVICE FOR DIRECT X-RAY DETECTION
    12.
    发明申请
    DEVICE FOR DIRECT X-RAY DETECTION 审中-公开

    公开(公告)号：US20180145204A1

    公开(公告)日：2018-05-24

    申请号：US15575158

    申请日：2016-05-18

    Applicant: Nokia Technologies Oy

    Inventor： Richard WHITE ,  Chris BOWER

    IPC: H01L31/115 ,  H01L31/0352 ,  H01L27/146

    CPC classification number: H01L31/115 ,  H01L27/14609 ,  H01L27/14659 ,  H01L27/14696 ,  H01L31/035218 ,  H01L31/035227

    Abstract: A device for direct X-ray detection (516) comprises a plurality of substantially parallel conductive channels (501) separated from one another by a quantum dot material (510), thereby forming a composite material layer (517). The parallel conductive channels (501) are electrically connected to source and drain electrodes (503 504a) which enable a flow of electrical current through the conductive channels (501). The quantum dot material (510) generates electron hole pairs upon exposure to incident electromagnetic radiation and the thus generated charge results in an electric field which causes a change in electrical current passing through at least one of the conductive channels (501). The change in electrical current is indicative of one or more of the presence and magnitude of the incident electromagnetic radiation. Since the conductive channels (501) are oriented in a direction perpendicular to the plane of the substrate (502), the distances between the conductive channels can be chosen under consideration of the diffusion lengths of the generated charge carriers and independently from the thickness of the composite material layer (517) required for X-ray radiation.

    AN ENVIRONMENTAL SENSOR AND A METHOD FOR DETERMINING RELATIVE VAPOUR PRESSURE
    14.
    发明申请
    AN ENVIRONMENTAL SENSOR AND A METHOD FOR DETERMINING RELATIVE VAPOUR PRESSURE 有权
    环境传感器和确定相对蒸汽压力的方法

    公开(公告)号：US20160153882A1

    公开(公告)日：2016-06-02

    申请号：US14905384

    申请日：2014-06-25

    Applicant: NOKIA TECHNOLOGIES OY

    Inventor： Richard WHITE ,  Stefano BORINI

    IPC: G01N7/14

    CPC classification number: G01N7/14 ,  G01L9/0098 ,  G01N27/02 ,  G01N27/4141

    Abstract: An apparatus for use in determining the relative vapour pressure of a fluid in an environment in which the apparatus is located, the apparatus comprising a first layer (512) configured to enable a flow of charge carriers from a source electrode (505) to a drain electrode (506), a second layer (513) configured to control the conductance of the first layer (512) using an electric field formed between the first (512) and second layers (513) and a third layer (514) positioned between the first and second layers to prevent a flow of charge carriers therebetween to enable formation of the electric field, wherein the second layer (513) is configured to exhibit a charge distribution on interaction with the fluid, the charge distribution giving rise to the electric field between the first and second (513) layers, and wherein the second layer (513) is configured such that the charge distribution and electric field strength are dependent upon the relative vapour pressure of the fluid in the environment (516), thereby allowing the relative vapour pressure to be derived from a measurement of the conductance of the first layer (512).

    Abstract translation: 一种用于确定装置所处的环境中的流体的相对蒸气压的装置，该装置包括第一层（512），该第一层被构造成能够使电荷载流子从源电极（505）流到排水管 电极（506），第二层（513），被配置为使用形成在第一层（512）和第二层（513）之间的电场和位于第一层（512）之间的第三层（514）来控制第一层 第一和第二层以防止其间的电荷载流子流动以形成电场，其中第二层（513）被配置为在与流体相互作用时显示电荷分布，电荷分布引起电场分布 第一和第二（513）层，并且其中第二层（513）被配置为使得电荷分布和电场强度取决于环境中的流体的相对蒸气压 （516），从而允许从第一层（512）的电导的测量得出相对蒸气压。

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