Abstract: An electronic reader for electro-chemical transistors (OECT) includes a potential output control module that controls the Vd, Vs, and Vg for the OECT under test, a high accuracy current monitor module which contains a transimpedance amplifier (TIA) used to control the output voltage and convert the input channel current Ids into a voltage value. A microcontroller (MCU) that controls the working sequences of the TIA so as to realize the specific characterization mode and enable an adjustable output voltage range. The MCU further controls a programmable sampling rate of up to 200 k samples per second (SPS) with low noise by down-sampling the base rate, convolution processing it and interpolating it back to ah high frequency, but without the noise. The device is small enough to be worn by a user and its output is sent to a mobile device for reading.

Abstract: A metal powder preparation system and method are provided. The metal powder preparation system includes a medium frequency smelting furnace, a homogeneous insulated quantitative pouring furnace, a precision-controlled liquid level temperature pouring ladle, and a plurality of groups of atomization mechanisms connected in sequence. The present application improves the preparation quality of the metal powder, so that the parameters such as the powder particle size, sphericity, fluidity, oxygen content, component distribution, and particle size distribution of the metal powder can all meet the requirements of high-quality metal additive manufacturing, achieving efficient and continuous preparation of the metal powder at the same time.

Abstract: The provided are a method, terminal, and system for updating a digital currency wallet, and relates to the field of computer technology. A specific implementation of the method includes: sending, based on user trigger, a query request about whether the digital currency wallet needs to be updated to a trusted platform; receiving a query result returned by the trusted platform; in the case that the query result indicates that the digital currency wallet needs to be updated, withdrawing a digital currency from the digital currency wallet, synchronizing offline transaction data of the digital currency wallet, and sending an update request to the trusted platform; receiving a target update instruction sent by the trusted platform, wherein the target update instruction indicates account data corresponding to the digital currency wallet; and updating the digital currency wallet based on the account data indicated by the target update instruction.

Abstract: Provided is a busbar-free interdigitated back contact (IBC) solar cell and an IBC solar cell module. The IBC solar cell includes a semiconductor substrate, finger electrode lines and conductive lines. The finger electrode lines include first finger electrode lines and second finger electrode lines that are alternately arranged on the semiconductor substrate. The conductive lines include first conductive lines and second conductive lines that are alternately arranged. The first conductive lines are connected to the first finger electrode lines and spaced apart from the second finger electrode lines. The second conductive lines are connected to the second finger electrode lines and spaced apart from the first finger electrode lines.

Abstract: A semiconductor substrate, including a back surface having N-type conductive regions and P-type conductive regions. The N-type conductive regions are provided with first non-pyramidal texture structures, and the P-type conductive regions are provided with second non-pyramidal texture structures. A top surface of the first non-pyramidal texture structure is a polygonal plane, and a top surface of the second non-pyramidal texture structure is a polygonal plane. A one-dimensional size of the top surface of the first non-pyramidal texture structure is less than a one-dimensional size of the top surface of the second non-pyramidal texture structure. The one-dimensional size of the top surface of the first non-pyramidal texture structure is in a range of 5 ?m to 12 ?m. The one-dimensional size of the top surface of the second non-pyramidal texture structure is in a range of 10 ?m to 40 ?m.

Abstract: Embodiments of the present disclosure relates to the field of solar cells, and in particular to a solar cell and a photovoltaic module. The solar cell includes: a substrate having a front surface and a rear surface; a first tunnel layer and a first doped conductive layer sequentially formed over the front surface of the substrate, the first tunnel layer and the first doped conductive layer are each aligned with a metal pattern region on the front surface; and a second tunnel layer and a second doped conductive layer sequentially formed over the rear surface of the substrate, and in a respective Raman spectrum, a full width at half maximum corresponding to the first doped conductive layer is not greater than a full width at half maximum corresponding to the second doped conductive layer.

Abstract: A solar cell including: a substrate having front and back surfaces, the back surface including first and second regions staggered and spaced from each other, and a gap region provided between one first region and one adjacent second region, a plurality of first pyramidal texture structure regions formed corresponding to a plurality of gap regions and a distance between a top and bottom thereof is 2-4 ?m; a first conductive layer formed over the first region; a second conductive layer formed over the second region, the second conductive layer has a conductivity type opposite to the first conductive layer; a first electrode forming electrical contact with the first conductive layer; a second electrode forming electrical contact with the second conductive layer; and a boundary region between the gap region and the conductive layer(s) adjacent thereto, the boundary region including strip or line-patterned texture structures arranged at intervals.

Abstract: There is provided a method for handling an updated profile of a first network function (NF) node of a service producer in a network. The method is performed by a network repository function (NRF) node. Priority information for the first NF node is removed (602) from the updated profile received from the first NF node if the NRF node previously changed the priority information. The priority information is for use by the network node in selecting an NF node of a service producer to provide a service requested by a second NF node of a service consumer. The priority information is indicative of a priority with which the first NF node is to be selected relative to at least one other NF node of the service producer. Transmission (604) of the updated profile, with the priority information removed, is initiated towards the network node.

Abstract: A solar cell, a manufacturing method thereof, and a photovoltaic module. The solar cell includes: a semiconductor substrate including first and second surfaces opposite to each other; emitter and first passivation layer formed over the first surface; tunneling layer formed over the second surface; first doped conductive layer and retardation layer formed on the tunneling layer and corresponding to metallization region, the first doped conductive layer is located between the tunneling layer and the retardation layer; second doped conductive layer formed over the tunneling layer and covering the tunneling layer in non-metallization region and the retardation layer, the retardation layer is configured to retard migration of doped element in the second doped conductive layer to the first doped conductive layer; second passivation layer formed over the second doped conductive layer; and second electrode forming contact with the second doped conductive layer and first electrode forming contact with the emitter.

Abstract: The present disclosure provides a solar cell. The solar cell includes a substrate, where the substrate has a front surface and a rear surface, the rear surface includes a textured region and a flat region, a doped surface field is formed in the textured region of the substrate; a tunneling dielectric layer, where the tunneling dielectric layer is located on the flat region; a doped conductive layer, where the doped conductive layer is located on the tunnelling dielectric layer, the doped conductive layer has doping elements, and the doped conductive layer has the same type of the doping elements with the doped surface field; a rear electrode, where a part of a bottom portion of the rear electrode is located in the doped conductive layer and the part of the bottom portion of the rear electrode is in contact with the doped surface field.

Abstract: A photovoltaic cell is provided, including a substrate, a doped layer, a tunneling dielectric layer, doped conductive layers, first electrodes, and conductive transport layers. A doping concentration of the doped layer is greater than that of the substrate. The doped layer includes first doped regions, second doped regions and third doped regions. A doping concentration of each first doped region is less than that of each second doped region and that of each third doped region. The tunneling dielectric layer is disposed on the first and second doped regions. Each doped conductive layer is aligned with a first doped region and is disposed on a tunneling dielectric layer. Each first electrode is disposed on and electrically connected to the doped conductive layer. Each conductive transport layer is aligned with a second doped region and is disposed on the tunneling dielectric layer.

Abstract: A method for controlling motion parameters of a pepper harvester based on combination of point clouds and images, including: (1) performing space-time calibration on a radar and a camera, constructing a data collection platform, and pre-processing image and point cloud data; (2) acquiring a real-time number of pepper in front of a harvester and an average height from canopies of pepper plants to soil through a point cloud, acquiring a cutting width and a pepper fruit proportion in front of the harvester through an image, and acquiring a comprehensive lowermost location of pepper fruits by combination of the point cloud and the image; (3) acquiring real-time motion parameters of the pepper harvester; and (4) controlling a real-time rotation speed, operation speed, and height of a drum using a fuzzy PID control method based on the comprehensive lowermost location of the pepper fruits and a predicted value of a feeding quantity.

Abstract: Provided are a positive electrode material and a preparation method thereof, a composite positive electrode material, a positive electrode plate, and a secondary battery. The positive electrode material includes: a core, a first shell layer, and a second shell layer. The first shell layer wraps around a surface of the core. The second shell layer wraps around a surface of the first shell layer. The core includes a lithium manganese iron phosphate material. The first shell layer includes a polyanionic positive electrode material. The polyanionic positive electrode material contains no manganese. The second shell layer includes a hydrophobic conductive material. When ensuring a relatively high energy density of the lithium manganese iron phosphate material, the positive electrode material improves the electrical conductivity of the lithium manganese iron phosphate material, alleviates the problem of hygroscopicity, and reduces manganese dissolution during cycling.

Abstract: Systems and methods related to a bootstrapping service for a network function (NF) in a core network of a cellular communications system are disclosed. In one embodiment, a method performed by a first NF in a core network of a cellular communications system comprises receiving, from a second NF, a request for services exposed by the first NF. The method further comprises, responsive to receiving the request, sending, to the second NF, information about one or more services exposed by the first NF. In one embodiment, the information about one or more services exposed by the first NF includes Application Programming Interface (API) versions of the one or more services. In this manner, flexibility is provided in the network since there is no need for static configuration of service parameters.

Abstract: A solar cell is provided, including a substrate having a rear surface including P-type regions and N-type regions, first dielectric layers each formed over a N-type region, first doped polysilicon layers each formed on a first dielectric layer and doped with an N-type doping element, second dielectric layers each formed over a P-type region, second doped polysilicon layers each formed on a second dielectric layer and doped with a P-type doping element, a passivation layer formed over surfaces of the first and second doped polysilicon layers, and first and second electrodes penetrating the passivation layer. Each first electrode is electrically connected to a first doped polysilicon layer and each second electrode is electrically connected to a second doped polysilicon layer. A first roughness of a surface of a first doped polysilicon layer is greater than a second roughness of a surface of a second doped polysilicon layer.

Abstract: A solar cell and a photovoltaic module are provided. The solar cell includes an N-type substrate having a front surface and a rear surface, a passivation stack disposed on the front surface, and a tunneling oxide layer and a doped conductive layer disposed on the rear surface. The passivation stack includes an oxygen-containing dielectric layer including a metal oxide material, a first passivation layer including an oxygen-containing silicon nitride material, and a second passivation layer including a silicon oxynitride material. A thickness of the oxygen-containing dielectric layer is in a range of 1 nm to 15 nm in a direction perpendicular to the front surface, a thickness of the first passivation layer is in a range of 30 nm to 60 nm in the direction perpendicular to the front surface, and a thickness of the second passivation layer is in a range of 20 nm to 40 nm in the direction perpendicular to the front surface.

Abstract: A photovoltaic cell is provided, including: a substrate; a tunneling layer, a field passivation layer and a first passivation film that are sequentially disposed on a rear surface of the substrate; and a first electrode. The first electrode penetrates the first passivation film and is in contact with the field passivation layer. A doping concentration of the first doping element in the tunneling layer is less than a doping concentration of the first doping element in the field passivation layer, and the doping concentration of the first doping element in the tunneling layer is greater than a doping concentration of the first doping element in the substrate. The field passivation layer includes a first doped region and a second doped region, and a doping curve slope of the first doped region is greater than a doping curve slope of the second doped region.

Abstract: A photovoltaic cell is provided, including a substrate having a front surface with metal and non-metal pattern regions, first and second pyramid structures in each metal pattern region, third and fourth pyramid structures in each non-metal pattern region, a first tunneling layer and a first doped conductive layer on a portion of the front surface in a respective metal pattern region, and a second tunneling layer and a second doped conductive layer on a rear surface of the substrate. A dimension of a bottom portion of each first pyramid structure is greater than that of each second pyramid structure. A dimension of a bottom portion of each third pyramid structure is greater than that of each fourth pyramid structure. An area proportion of the first pyramid structures in the metal pattern region is greater than that of the third pyramid structures in a respective non-metal pattern region.

Abstract: Methods and nodes related to subscription handling and notifications, for instance, with respect to Network Function (NF) management services, are described.

Abstract: An opioid sensor includes a film having two opposed surfaces. The film includes a conductive polymer, and an anchor molecule attached to the conductive polymer so that it is immobilized at a first of the two opposed surfaces. The anchor molecule is to adsorb an opioid. The opioid sensor also includes a working electrode at least partially in contact with a second of the two opposed surfaces; and a counter electrode or counter/reference electrode electrically connected to, and positioned a spaced distance from, the working electrode.