Taking polyacrylonitrile based carbon felt as an example, the area weight is 500g/m2 and 1000g/m2, the longitudinal and transverse strength (N/mm2) are 0.12, 0.16, 0.10, 0.12, the breaking elongati...
Solar photovoltaic power generation has become the world’s most promising new energy industry. Compared with polysilicon and amorphous silicon solar cells, monocrystalline silicon, as a photo...
2 Experimental results and discussion
2.1 Epitaxial layer thickness and uniformity
Epitaxial layer thickness, doping concentration and uniformity are one of the core indicators for judging the...
Wafer cutting is one of the important links in power semiconductor production. This step is designed to accurately separate individual integrated circuits or chips from semiconductor wafers.
The ke...
The third generation of semiconductors, represented by gallium nitride (GaN) and silicon carbide (SiC), have been rapidly developed due to their excellent properties. However, how to accurately mea...
The competent departments of industry and informationization, the departments of finance (bureaus), the insurance regulatory bureaus of the provinces, autonomous regions, municipalities directly u...