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Nankai University’s Xiaoye Wang and Ling Huang Collaborate in Angewandte Chemie: Novel Near-Infrared Photosensitizers Based on Boron–Nitrogen-Hetero fused Aromatic Hydrocarbons Achieve High-Performance Upconversion Luminescence
Triplet–triplet annihilation upconversion (TTA-UC) luminescence, which converts near-infrared (NIR) light—with its low scattering and strong penetration—into high-energy blue light, offers unique advantages in fields such as photocatalysis, bioimaging, photodynamic therapy, and 3D printing.
2023
08-06
A high-tech enterprise leveraging ultra-high vacuum technology, specializing in the design, R&D, and manufacturing of custom vacuum equipment and a wide range of ancillary products.
Shenyang Kecheng Vacuum Technology Co., Ltd. is located in eastern Shenyang and is a high-tech enterprise that leverages ultra-high vacuum technology to design, develop, and manufacture custom vacuum equipment and a wide range of ancillary products.
2021
10-25
HZB Breaks Another Record: Perovskite–Silicon Tandem Solar Cell with Certified Efficiency of 32.5%
Scientists at the Helmholtz-Zentrum Berlin (HZB) in Germany claim to have fabricated a perovskite–silicon tandem solar cell with an efficiency of 32.5%, setting a new world-record efficiency.
2022
12-21
Vacuum Coating—A Comprehensive Guide to Electron-Beam Evaporation Coating and Equipment Maintenance
Under high vacuum, the filament of the electron gun is heated to emit thermally emitted electrons, which are then accelerated by the anode to acquire substantial kinetic energy and bombard the evaporation material. The conversion of this kinetic energy into heat causes the evaporation material to be heated and vaporized, thereby realizing electron-beam evaporation deposition. The electron-beam evaporation source consists of a thermionic cathode that emits electrons, an electron-accelerating electrode, and the coating material serving as the anode. The energy of the electron beam can be highly concentrated, enabling localized high temperatures in the coating material and thus promoting its evaporation. By adjusting the power of the electron beam, the evaporation rate of the coating material can be conveniently controlled, which is particularly advantageous for high-melting-point metals and high-purity metallic and compound materials.
11-23
