4 ms·

How is this method better for those uses than the old method?

• adrian_b 1y ago
  According to TFA, they have succeed to produce 2-inch wafers of indium selenide with a small enough density of defects, which nobody did previously. The first roadblock on the use of new semiconductor materials is that in the beginning nobody succeeds to make crystals that are both big enough and free enough of defects. For size, usually achieving to make 2-inch wafers is the threshold for enabling commercial applications. The second problem is finding metallization systems that can achieve ohmic contacts and rectifying contacts on the semiconductor crystal and the third is finding impurities that allow to modify the polarity and the concentration of the charge carriers in wide enough ranges. These 2 problems are particularly difficult for wide-bandgap semiconductors, like gallium nitride, but they are unlikely to be difficult for indium selenide, which should behave similarly to zinc selenide or indium phosphide, for which there is much more experience.