In this article, we have considered the p-i-n Ge photodetector with ZnSe passivating layer. Passivation layer needs to be protected from dust, rain drops and other external influences. However, passivation can cause errors in image. When creating a on Ge, which is used photodetectors, found two additional phases GeSe GeSe2 that do not contradict their state diagram. The above an essential effec...

In the quest for higher efficiency and lower cost solar energy conversion devices, new light absorber materials are being intensively researched. With their attractive optical electrical properties, metal chalcogenide have emerged as promising candidates these next-generation absorbers. this review, we survey studies on absorbers having a simple binary composition, namely, Cu2S, SnS, GeSe, WSe2...

By now the “Lake Wobegon Effect” has become famous in public education. Taken from a description of Garrison Keillor’s mythical community, “where the women are strong, the men are good-looking, and all of the children are above average,” it has become a watchword for how tests can be used to distort achievement. In 1988, John Cannell, a West Virginia pediatrician, became alarmed that many of th...

The electric structure of twisted bilayer GeSe, which shows a rectangular moir\'{e} pattern, is analyzed using $\bm{k}\cdot\bm{p}$ type effective continuum model. model constructed on the basis local approximation method, where lattice system approximated by its untwisted with parallel displacement, and required parameters are fixed help first-principles method. By inspecting twist angle depend...