2results about How to "Good mechanical stability" patented technology

The application provides a benzamide bromide-modified perovskite solar cell and a preparation method thereof, and belongs to the technical field of perovskite solar cells; the application solves the problem of low photoelectric conversion rate and poor stability of existing perovskite solar cells caused by uncoordinated lead ions; the application comprises the following steps: S1, placing a substrate covered with a transparent metal electrode into deionized water, acetone and ethanol for ultrasonic cleaning in sequence, and then drying and treating by ultraviolet ozone to form a conductive substrate; S2, spin coating an electron transport layer on the conductive substrate; S3, spin coating and depositing a perovskite active layer on the surface of the electron transport layer, wherein the perovskite active layer uses benzamide bromide as a passivation agent; S4, spin coating a hole transport material on the surface of the perovskite active layer to obtain a hole transport layer; and S5, evaporating a metal electrode on the hole transport layer; the application is applied to perovskite solar cells.

The invention provides composite titanium-based lubricating grease and a preparation method thereof. The lubricating oil is prepared from the following raw materials in parts by mass: 76-82 parts of base oil, 16-22 parts of a thickening agent, 0.5-2 parts of an antioxidant and 0.5-1 part of an anti-wear agent, wherein the total mass part is 100. Methyl phenyl silicone oil with high molecular weight is adopted as base oil, and a thickening agent is synthesized from 12-hydroxystearic acid, benzoic acid and tetraisopropyl titanate. Compared with the prior art, the composite titanium-based lubricating grease provided by the invention has the advantages that the temperature resistance is obviously improved, the dropping point temperature reaches 350 DEG C or above, and the composite titanium-based lubricating grease has good mechanical stability and wear resistance, can effectively reduce friction and wear between mechanisms in harsh use working conditions and space environments, and is used for lubricating long-term high-temperature transmission mechanisms of space driving components.