4results about How to "Improve injection ability" patented technology

A novel organic electroluminescent device is disclosed. This novel organic electroluminescent device comprises multiple light-emitting units, a second organic layer, and a specific connecting layer, and controls LUMO. 第一有机材料 - Work function 金属 ≤2.1eV can promote electron separation at the metal-organic interface, thereby suppressing carrier recombination at the interface; controlling HOMO 第二有机材料 -LUMO 第一有机材料 With a voltage ≥0.3V, by adjusting the doping concentration of the first organic material, hole injection is controlled, and carrier recombination in the light-emitting layer is balanced, thereby significantly improving the device's efficiency and lifetime while reducing power consumption. This novel tandem organic electroluminescent device exhibits superior device performance and broader application prospects.

The application discloses a triazine-containing organic compound and application thereof, and belongs to the technical field of semiconductor materials. The structure of the compound has good stability and electron resistance, and the compound has good electron injection and hole blocking capacity. When the compound is used as a material of an organic electroluminescent device, the driving voltage of the device and the service life of the device are significantly improved.

This invention relates to the field of water-saving and fertilizer-retaining technology for fruit trees, and discloses a water-saving, fertilizer-retaining, and frost-resistant cultivation device for fruit trees. The device includes a pipe buried 80-120cm apart at a depth of 50cm in the planting row spacing of the fruit trees. The outer surface of the pipe has several absorption holes for draining water and fertilizer from the pipe. The top of the pipe is covered with a layer of sand and gravel and kraft paper to cover the absorption holes. This water-saving, fertilizer-retaining, and frost-resistant cultivation device and its method of use, by burying the nutrient trough precisely where most of the fruit tree's root system is located, only requires a small amount of water and fertilizer or nutrient solution to be injected. This avoids the large amount of fertilizer that accumulates in the soil and is not well absorbed and utilized by the roots, resulting in fertilizer waste and soil pollution, which is a consequence of trenching and spraying fertilization. It also saves water wasted on surface irrigation, achieving a good water-saving and fertilizer-retaining effect, and effectively prevents the serious impact of early spring frost on fruit tree flowering.

The utility model discloses a clamping and positioning assembly, and relates to the technical field of cast aluminum motor rotor processing equipment, the clamping and positioning assembly comprises a device shell and a liquid injection assembly, the inner wall of the device shell is provided with the liquid injection assembly, the outer wall of the liquid injection assembly is provided with a positioning plate, and the bottom of the liquid injection assembly is provided with a positioning groove. A clamping assembly for limiting the positioning groove is arranged at one end of the positioning groove and comprises a rack, a large gear and a small gear. By arranging the clamping assembly, the position of the positioning groove is limited, the stability of a machined part in the machining process is effectively improved, the phenomenon that the positioning groove possibly shakes is reduced, the limiting block is arranged at the bottom of the liquid injection assembly and makes contact with the outer wall of the positioning groove, and the clamping assembly is arranged on the bottom of the liquid injection assembly and makes contact with the outer wall of the positioning groove. And when the positioning groove is limited by the fixing block, the position of the positioning groove is limited by the limiting block, so that the shaking of the positioning groove during the operation period of the liquid injection assembly is reduced.