公开(公告)号：US10475941B2

公开(公告)日：2019-11-12

申请号：US15761200

申请日：2016-09-12

Applicant: Nokia Technologies Oy

Inventor： Alexander Bessonov ,  Adam Robinson ,  Darryl Cotton ,  Richard White

IPC: H01L31/02 ,  H01L31/11 ,  H01L31/18 ,  H01L31/028 ,  H01L31/0236 ,  H01L31/0352 ,  H01L31/112

Abstract: A photodetector has a two dimensional conductive channel and a quantum dot layer configured to generate charge on exposure to incident electromagnetic radiation. The surface texture of the quantum dot layer has texturing to provide surface roughness which increases the amount of electromagnetic radiation absorbed in the quantum dot layer in comparison to a photodetector having a flat (non-textured) incident electromagnetic radiation surface.

公开(公告)号：US09310685B2

公开(公告)日：2016-04-12

申请号：US13892782

申请日：2013-05-13

Applicant: Nokia Technologies Oy

Inventor： Alexander Bessonov

IPC: G03F7/20 ,  G03F7/004 ,  G03F7/40

CPC classification number: G03F7/2002 ,  G03F7/0042 ,  G03F7/40

Abstract: Provided herein are a method and apparatus for the formation of conductive films on a substrate using precise sintering of a conductive film and thermal management of the substrate during sintering. In particular, a method may include depositing a conductive metal-based ink on a translucent or transparent substrate, positioning a mask between the deposited conductive metal-based ink and a light source, exposing the mask and the underlying deposited conductive metal-based ink to the light source, sintering the conductive metal-based ink exposed to the light source, and cleaning the non-sintered conductive metal-based ink from the translucent or transparent substrate. The mask may be configured to shield at least a portion of the conductive metal-based ink from the light source. The portion of the conductive metal-based ink shielded from the light source may remain non-sintered in response to the sintering of the conductive metal-based ink exposed to the light source.

Abstract translation: 本文提供了一种用于在基底上形成导电膜的方法和装置，其中使用精确烧结导电膜并在烧结期间对衬底进行热管理。 特别地，一种方法可以包括在半透明或透明衬底上沉积导电金属基油墨，将掩模定位在沉积的导电金属基油墨和光源之间，将掩模和下面沉积的导电金属基油墨曝光到 光源，烧结暴露于光源的导电金属基油墨，以及从半透明或透明基材清洗非烧结的导电金属基油墨。 掩模可以被配置为屏蔽来自光源的导电金属基油墨的至少一部分。 响应于暴露于光源的导电金属基油墨的烧结，从光源屏蔽的导电金属基油墨的部分可以保持不烧结。

公开(公告)号：US11087018B2

公开(公告)日：2021-08-10

申请号：US16092732

申请日：2017-04-27

Applicant: Nokia Technologies Oy

Inventor： Mark Allen ,  Troels Ronnow ,  David Bitauld ,  Alexander Bessonov

IPC: G06K9/74 ,  G06F21/62

Abstract: An apparatus, method and computer program wherein the apparatus comprises:a plurality of quantum dot-graphene field effect transistors; circuitry configured to provide an individual drain-source bias voltage to each of a plurality of quantum dot-graphene field effect transistors, wherein different individual drain-source bias voltages have different parameters, to enable the plurality of quantum dot-graphene field effect transistors to detect light from a user of an apparatus; and circuitry configured to obtain output signals from each of a plurality of quantum dot-graphene field effect transistors where the output signal is dependent upon both the light detected by the quantum dot-graphene field effect transistor and the parameters of the drain-source bias voltage to enable the obtained output signals to be used as a scrambled identification signal of the user of the apparatus.

公开(公告)号：US11329186B2

公开(公告)日：2022-05-10

申请号：US15770277

申请日：2016-10-07

Applicant: Nokia Technologies Oy

Inventor： Alexander Bessonov ,  Darryl Cotton ,  Adam Robinson

IPC: H01L31/173 ,  H01L31/024 ,  H01L31/113 ,  A61B5/024 ,  A61B5/1455 ,  A61B5/0205 ,  A61B5/00 ,  H01L27/32 ,  A61B5/021

Abstract: An apparatus (201) comprises a light emitter (202) and a photodetector (203) formed on a single fluid-permeable substrate (206) such that the photodetector (203) is able to detect light emitted by the light emitter (202) after interaction of the light with a user of the apparatus (201). The photodetector comprises a channel member (207) which may be made from graphene, respective source and drain electrodes (208, 209), a layer of photosensitive material (210) configured to vary the flow of electrical current through the channel member (207) on exposure to light from the light emitter (202), and a gate electrode (211). The apparatus (201) further comprises a layer of fluid-impermeable dielectric material (212) configured to inhibit a flow of electrical current between the channel member (207) and the gate electrode (211) of the photodetector (203) to enable the electrical conductance of the channel member (207) to be controlled by a voltage applied to the gate electrode (211) and to inhibit exposure of the light emitter (202) to fluid which has permeated through the fluid-permeable substrate (206). The layer of fluid-impermeable dielectric material (212) allows resilient substrates made from polymeric material to be used without the risk of damage to the overlying components caused by the permeated fluid. The dual functionality of the layer of fluid-impermeable dielectric material (212) reduces the number of fabrication steps used to form the apparatus (201) and results in a thinner, more compact device.