Abstract: A tandem cell is provided in the present disclosure, which relates to the technical field of photovoltaics, so as to form a functional layer with high film ordering on a bottom cell, thereby improving photoelectric conversion efficiency of the tandem cell. The tandem cell includes: a bottom cell with a textured surface; a hole transport layer formed on the textured surface of the bottom cell; a second ordered induction layer and a perovskite absorption layer formed on the hole transport layer, the second ordered induction layer being located between the hole transport layer and the perovskite absorption layer; and a transparent conductive layer formed on the perovskite absorption layer. An inducing material contained in the second ordered induction layer is organic ammonium salt or inorganic lead compound. The tandem cell according to the present disclosure is a tandem cell with a perovskite solar cell as a top cell.

Abstract: A color tandem photovoltaic device includes a bottom cell, an optical reflective layer, a series connection layer, and a top cell. The series connection layer connects the bottom cell and the top cell; the optical reflective layer is located between the bottom cell and the top cell such that the color tandem photovoltaic device presents color.

Abstract: The laminated A tandem solar cell includes a bottom cell and a top cell located on the bottom cell, wherein the bottom cell includes a first doping portion and a second doping portion, the first doping portion and the second doping portion form at least one PN junction, majority carriers in the first doping portion are a first type of carrier, and majority carriers in the second doping portion are a second type of carrier; the bottom cell is provided with a first electrode hole and a second electrode hole which penetrate the bottom cell, a first electrode is formed in the first electrode hole, and a second electrode is formed in the second electrode hole; the first electrode is in contact with the first doping portion; and the second electrode is in contact with the second doping portion.

Abstract: A display device and a manufacturing method thereof are disclosed. The display device includes a base substrate and at least one pixel circuit provided on the base substrate, and the pixel circuit includes a driving transistor, a first transistor, and a second transistor; the driving transistor includes a control electrode, a first electrode, and a second electrode; the first transistor includes a first active region, the second transistor includes a second active region, the driving transistor includes a fourth active region, at least one of a doping concentration of the first active region and a doping concentration of the second active region is greater than a doping concentration of the fourth active region.

Abstract: A tandem solar cell and a photovoltaic assembly, The tandem solar cell includes: a top-layer perovskite sub-cell and a bottom-layer crystalline-silicon sub-cell, and an optical regulating layer provided between the top-layer perovskite sub-cell and the bottom-layer crystalline-silicon sub-cell. After the part of the target light rays that are not absorbed by the top-layer perovskite sub-cell have passed through the top-layer perovskite sub-cell, because the optical regulating layer can be used to reflect at least some of the target light rays back into the top-layer perovskite sub-cell, at least some of the target light rays can enter the top-layer perovskite sub-cell again to perform secondary absorption, which prevents that the target light rays within the short-wave wave band directly enter the bottom-layer crystalline-silicon sub-cell having a low utilization ratio of the target light rays within the short-wave wave band, thereby increasing the efficiency of the tandem solar cell.

Abstract: A display substrate and a display panel are provided, the display substrate includes a first gate driver circuit and a second gate driver circuit that are respectively arranged on a first side and a second side of a display region; the first gate driver circuit includes a plurality of first shift register units arranged in a first direction, each first shift register unit includes a first thin film transistor; the second gate driver circuit includes a plurality of second shift register units arranged in the first direction, each second shift register unit includes a second thin film transistor having the same function as the first thin film transistor; an average turn-on current of at least one first thin film transistor is Ion1, and an average turn-on current of at least one second thin film transistor is Ion2, Ion1>Ion2.

Abstract: Disclosed are a three-dimensional package structure and a method for forming the same. The method includes: flip-mounting the first die onto the first substrate; mounting the heat conductive plate onto the first substrate, such that bottom portions of the two vertical plates of the heat conductive plate are attached onto a surface of the first substrate and the lateral plate is attached onto a surface, away from the first substrate, of the first die; mounting the second substrate over the first substrate, such that top portions of the two vertical plates of the heat conductive plate are respectively embedded into the two openings; filling up a space between the first substrate and the second substrate with a molding layer; flip-mounting the second die onto a surface of the second substrate; and mounting the heat sink, such that the heat sink encircles an outer surface of the second die.

Abstract: A display substrate is provided. The display substrate includes a base substrate including a display region and a peripheral region, a gate scan driving circuit, a light-emitting control scan driving circuit, a first power line, a first planarization layer, a second planarization layer and a first shielding layer and a second shielding layer. The first planarization layer and the second planarization layer further include an open slot. The second shielding layer extends from a region corresponding to the light-emitting control scan driving circuit to a region corresponding to the gate scan driving circuit and covers the open slot. In an area where the second shielding layer is close to the open slot, an orthographic projection of the second shielding layer covering the open slot on the base substrate at least overlaps with an orthographic projection of the first shielding layer on the base substrate.

Abstract: A perovskite material bypass diode and a manufacturing method therefor, a perovskite solar cell module and a manufacturing method therefor, and a photovoltaic module are disclosed by the present application, which relate to the technical field of photovoltaics, the difficulty of manufacturing the perovskite material bypass diode is reduced. The method for manufacturing the perovskite material bypass diode includes: providing a layer of a perovskite material layer, processing the perovskite material layer to form a P-type perovskite material region and an N-type perovskite material region, so that a perovskite material bypass diode is formed. The perovskite material bypass diode and the manufacturing method therefor, the perovskite solar cell module and the manufacturing method therefor, and the photovoltaic module provided by the present application are used to manufacture the photovoltaic module.

Abstract: A sensor for liquid biopsy, its method of making, and its method of non-invasive use. The sensor includes a substrate with a surface functionalized with biotinylated antibodies. The biotinylated antibodies are arranged to engage with surface proteins on exosomes associated with malignant cancer cells such as glioma cells.

Abstract: Disclosed are a thin film transistor and preparation method thereof, display substrate and display apparatus. The thin film transistor includes a base substrate, a shielding layer, buffer layer, active layer, gate insulating layer and conductive layer stacked on the base substrate; the conductive layer includes a gate electrode, source electrode and drain electrode; the active layer includes a channel region, source transition region and drain transition region at two sides of the channel region, source connection region and drain connection region; the source transition region and drain transition region each include a first sub-region, second sub-region and third sub-region connected sequentially, first sub-region is located on a side of second sub-region away from the channel region, third sub-region is located on a side of second sub-region close to the channel region, a thickness of second sub-region is k times that of the channel region, k is 0.8 to 1.5.

Abstract: A magnetic recording medium includes a substrate, an underlayer formed on the substrate, and a magnetic layer formed on the underlayer. The magnetic layer includes an alloy having a L10 structure. The underlayer includes a first underlayer and a second underlayer. The first underlayer includes Mo and Ru, the content of Ru in the first underlayer is in a range of 5 atom % to 30 atom %, and the second underlayer includes a material having a body-centered cubic (BCC) structure. The second underlayer is formed between the first underlayer and the substrate.

Abstract: A display panel and a manufacture method thereof, and a display apparatus are provided. The display panel has a display region and a border region that surrounds the display region and includes a peripheral circuit region and a peripheral region; the peripheral circuit region is between the display region and the peripheral region. At least a part of a barrier structure of the display panel is in the peripheral circuit region, and the barrier structure includes an organic barrier layer including an opening passing through the organic barrier layer and an inorganic barrier layer covering the organic barrier layer and filling the opening; an extension direction of the opening is same as that of an edge, close to the opening, of the display panel; the peripheral circuit is in the peripheral circuit region.

Abstract: A model training method includes performing, by an ith device in a kth group of devices, n*M times of model training. The ith device completes a model parameter exchange with at least one other device in the kth group of devices every M times of model training, M is a quantity of devices in the kth group of devices, M is greater than or equal to 2, and n is an integer. The model training method also includes sending, by the ith device, a model Mi,n*M to a target device. The model Mi,n*M is obtained by the ith device by completing the n*M times of model training.

Abstract: Provided herein are methods and compositions useful for treating bacterial cell populations including bacterial persister cells and/or antibiotic resistant bacterial cells.

Abstract: A tandem cell and a manufacturing method thereof are provided in the present disclosure, so as to improve hole transmission performance of the tandem cell. The tandem cell includes a bottom cell, a hole transporting layer formed on the bottom cell, a perovskite absorbing layer formed on the hole transporting layer, and a transparent conducting layer formed above the perovskite absorbing layer. A material of the hole transporting layer includes a semiconductor material with a p-type delafossite structure, and a valence band top energy level of the hole transporting layer sequentially decreases in a direction away from the bottom cell, which has dual functions of carrier transport and carrier recombination, so as to simplify a cell structure and optimize the photoelectric conversion efficiency. The tandem cell and the manufacturing method thereof according to the present disclosure are used for manufacturing the tandem cell.

Abstract: A pixel structure, an image sensor, an electronic device and a method for controlling an image sensor are provided.

Abstract: A prediction system of an online system deploys one or more machine-learned architectures to generate predictions. In one embodiment, the machine-learned architecture is a stacked ensemble model. The stacked ensemble model includes a plurality of base models, where a base model is coupled to receive input data and generate a base prediction for the input data. The stacked ensemble model includes a meta model that combines the base predictions to generate a meta prediction for the input data. The prediction system also generates a reliability measure that takes advantage of the base predictions to evaluate the reliability of the meta prediction. In this manner, while the quality of individual predictions may differ from one another depending on the values of the input data, the prediction system can dynamically generate the reliability measure to account for this variation.