4results about How to "Wide absorption range" patented technology

This invention discloses a D-A-D type α-cyanopyrrolopyrrole photothermal material, its preparation method, and its applications. The material uses α-cyanopyrrolopyrrole as the acceptor unit and triphenylamine as the electron donor unit, with furan and thiophene as π-bridges, respectively. Compounds TPA-O and TPA-S were prepared via Suzuki reaction, oxidation reaction, cyclization reaction, and condensation reaction. The photothermal material of this invention exhibits broad spectral absorption, narrow bandgap, and excellent photothermal stability. Under 808 nm laser light (1 W·cm⁻¹), it achieves [the desired effect]. ‑2 Under irradiation, TPA-O solid powder can be rapidly heated to 265℃; under simulated sunlight (1 kW.m... ‑2 Under irradiation, the effective evaporation rate of TPA-O solid powder in the water evaporation experiment was 1.458 kg·m⁻¹. –2 .h –1 When integrated into a thermal power generation device, the maximum output voltage reaches 230 mV.

The present application relates to the technical field of cathode interface materials, in particular to a non-conjugated acceptor-acceptor type pyrene diimide polymer, a preparation method thereof, a cathode interface material and a semiconductor device. The non-conjugated acceptor-acceptor type pyrene diimide polymer comprises a pyrene diimide unit and a conjugated acceptor unit polymerized with the pyrene diimide in a non-conjugated manner, and the conjugated acceptor unit is selected from the pyrene diimide unit or other electron-deficient acceptor units; the ultraviolet-visible light absorption range of the other electron-deficient acceptor units is 250-650 nm. When the non-conjugated acceptor-acceptor type pyrene diimide polymer is used as a cathode interface material, it not only has a lower LUMO level, but also increases the ultraviolet-visible light absorption range, thereby widening the light absorption range of the solar cell device and improving the short-circuit current density of the solar cell device.

The application discloses a kind of phthalocyanine copper / inverted pyramid perovskite heterojunction photodetector and preparation method, comprising the following steps: 1) etching out the silicon piece with pyramid surface microstructure, as the base of growing perovskite single crystal;2) preparation perovskite solution, utilize silicon piece and glass piece as the frame of growth area restriction, utilize seed growth method, space limited method and inverse temperature crystallization method combined growth method preparation surface pyramid perovskite single crystal;3) utilize thermal evaporation in perovskite single crystal surface evaporation phthalocyanine copper film formation heterojunction, then utilize conductive carbon paste as upper and lower electrode preparation photodetector.The photodetector prepared by the application is stable at normal temperature and pressure, and has better photoelectric response relative to the control group device in a high humidity environment, and the device has good long-time humidity stability, which has guiding significance for the future high-performance photodetection field in high humidity environment such as sea, ship and island.

The invention discloses a positioning tool for automobile part machining, which comprises a workbench, supporting legs fixedly connected to the bottom of the workbench, a suction fan arranged at the upper part of the workbench, and a machining assembly arranged at the upper part of the workbench, and the machining assembly comprises a positioning mechanism arranged on the workbench; a sliding mechanism is arranged on the workbench, a collecting mechanism is arranged on one side of a suction fan, a first rectangular column is slidably connected with the workbench through a lead screw, the right end of the lead screw is rotatably connected with a second rectangular column through a bearing, and a first fixing plate is rotatably connected with the first rectangular column through a rotating shaft. The output end of the first air cylinder is fixedly connected with a second rectangular column, and the second rectangular column is slidably connected with the workbench through the first air cylinder. The automobile part machining device solves the problem that an existing device cannot rotate positioned automobile parts, so that the parts can be machined more conveniently.