989results about How to "Improve output characteristics" patented technology

A photovoltaic element which directly converts an optical energy such as solar light into an electric energy. After many uneven sections are formed on the surface of an n-type crystalline silicon substrate (1), the surface of the substrate (1) is isotropically etched. Then the bottoms (b) of the recessed sections are rounded and a p-type amorphous silicon layer (3) is formed on the surface of the substrate (1) through an intrinsic amorphous silicon layer (2). The shape of the surface of the substrate (1) after isotropic etching is such that the bottoms of the recessed sections are slightly rounded and therefore the amorphous silicon layer can be deposited in a uniform thickness.

The present invention provides a shift register unit and a gate driving circuit, wherein the shift register unit and the gate driving circuit are provided for reducing noise interference, improving shift register stability, and reducing a size of the shift register unit. The shift register unit comprises: an input module for responding to an input signal and providing a first voltage signal for an input module of an output terminal; a reset module for responding to a reset signal and providing a second voltage signal for a first node adopted as an input module output terminal in the input module; an output module for responding to a voltage of the first node, and providing a first clock signal for an output module of the output terminal; a pull-down control module for responding to a second clock signal, providing the second clock signal for a second node, responding to the voltage of the first node or the output terminal, and providing a power supply negative voltage for a second node; and a pull-down module for responding to a voltage of the second node, and providing the power supply negative voltage for the first node and the output terminal.

A thin-film solar cell including a transparent electrode layer, a semiconductor photovoltaic conversion layer, a rear transparent electrode layer and a rear reflective metal layer, said layers being formed in this order on a transparent substrate, wherein the rear transparent electrode has a two-layer structure of an ITO or ZnO:Ga layer and a ZnO:Al layer formed in this order on the semiconductor photovoltaic conversion layer.

Disclosed is a separator in which a porous coating layer is formed of a mixture of inorganic material particles and a binder polymer on the surface of a porous substrate.

Provided are a vertical GaN-based LED and a method of manufacturing the same. The vertical GaN-based LED includes an n-electrode. An AlGaN layer is formed under the n-electrode. An undoped GaN layer is formed under the AlGaN layer to provide a two-dimensional electron gas layer to a junction interface of the AlGaN layer. A GaN-based LED structure includes an n-type GaN layer, an active layer, and a p-type GaN layer that are sequentially formed under the undoped GaN layer. A p-electrode is formed under the GaN-based LED structure. A conductive substrate is formed under the p-electrode.

The invention provides a feed-forward control system and a feed-forward control method for a wind generating set based on a laser wind finding radar. The feed-forward control system comprises a laser wind finding radar and a feed-forward controller. The feed-forward controller comprises a data processing unit and a feed-forward logical unit. The data processing unit calculates and sends a real-time wind speed fluctuating value delta V to the feed-forward logical unit; and the feed-forward logical unit calculates the wind speed fluctuating value delta V to obtain an append command vane angle beta which is added to an original variable-pitch controller command vane angle alpha to obtain and send a final variable-pitch command signal theta to a variable-pitch controller. The wind speed feed-forward control is added, so that loads of relevant parts of the wind generating set are reduced, output characteristics of the wind generating set are improved, and the safety of the wind generating set under extreme wind conditions is improved; and a prior running fan system is not needed to be transformed too much, the feed-forward control system and the feed-forward control method have wide adaptability simultaneously and are capable of being used in different environments and easy to implement, loads of parts are reduced, the wind energy utilization rate is improved, and the cost is reduced.

Disclosed is a positive electrode body for a nonaqueous electrolyte battery, which suppresses increase in interface resistance by suppressing the formation of a high resistance layer at the contact interface between a positive electrode active material particle and a solid electrolyte particle. Specifically disclosed is a positive electrode body (1) for a nonaqueous electrolyte battery, wherein coated positive electrode active material particles (10), each of which is obtained by covering the surface of a positive electrode active material particle (10a) with a coating layer (10b) that has Li ion conductivity, and sulfide solid electrolyte particles (11) are mixed. The coating layer (10b) is formed from an amorphous oxide having oxygen deficiency. By having oxygen deficiency in the coating layer (10b), Li ion conductivity and electron conductivity sufficient for charge and discharge of a battery can be stably secured in the coating layer (10b).

The present disclosure relates to a multilayer negative electrode comprising a negative electrode current collector configured to transfer electrons between an outer lead and a negative electrode active material, a first negative electrode mixture layer formed on one surface or both surfaces of the current collector and containing natural graphite as a negative electrode active material and a second negative electrode mixture layer formed on the first negative electrode mixture layer and containing artificial graphite as a negative electrode active material, and a lithium secondary battery including the same.

A photovoltaic device capable of improving output characteristics is provided. This photovoltaic device comprises a crystalline semiconductor member, a substantially intrinsic first amorphous semiconductor layer formed on the front surface of the crystalline semiconductor member and a first conductivity type second amorphous semiconductor layer formed on the front surface of the first amorphous semiconductor layer, and has a hydrogen concentration peak in the first amorphous semiconductor layer. Thus, the quantity of hydrogen atoms in the first amorphous semiconductor layer is so increased that the hydrogen atoms increased in quantity can be bonded to dangling bonds of silicon atoms forming defects in the first amorphous semiconductor layer for inactivating the dangling bonds.

The invention provides a two-dimensional material heterojunction field effect transistor, a preparation method thereof and a transistor array device. The transistor comprises a conductive substrate, an insulating dielectric layer, a source electrode, a drain electrode, a first two-dimensional material layer and a second two-dimensional material layer, wherein the insulating dielectric layer is arranged on the conductive substrate; the source electrode and the drain electrode are arranged at two ends of the insulating dielectric layer respectively and a channel region is arranged between the source electrode and the drain electrode; the first two-dimensional material layer is arranged on the source electrode and the channel region connected with the source electrode; the second two-dimensional material layer is arranged on the drain electrode and one part of first two-dimensional material layer on the channel region; the first two-dimensional material layer is different from the second two-dimensional material layer in material; the first two-dimensional material layer, the second two-dimensional material layer, the source electrode and the drain electrode can form ohmic contact. The transistor provided by the invention has good properties of output characteristics and the like and is low in cost. The preparation method of the transistor provided by the invention is high in substrate utilization rate and high in preparation efficiency; the damage of metal evaporation to a two-dimensional material can be avoided; and the array device can also be prepared.

A polymeric electrolyte comprising: a polymeric material and an electrolyte salt; or a polymeric material, a solvent and an electrolyte salt, wherein a copolymer composed of 50 to 99 mol % of an ethylenically unsaturated compound and 1 to 50 mol % of carbon monoxide comprises 66.7 to 100 wt % of the polymeric material.

Disclosed is a porous membrane for a secondary battery, which has further improved output characteristics and long-term cycle characteristics when compared with conventional porous membranes. The porous membrane for a secondary battery is used for a lithium ion secondary battery or the like. Specifically disclosed is a porous membrane for a secondary battery, which contains polymer particles (A) that have a number average particle diameter of 0.4 [mu]m or more but less than 10 [mu]m and a glass transition temperature of 65 DEG C or more and polymer particles (B) that have a number average particle diameter of 0.04 [mu]m or more but less than 0.3 [mu]m and a glass transition temperature of 15 DEG C or less. It is preferable that the polymer particles (B) have a crystallization degree of 40% or less and a main chain structure that is composed of a saturated structure.