In their work published in Science magazine, scientists have shown that the cube arsenide of Bora solves two major problems of silicon conductors: the heat conductivity of this material is 10 times greater than that of silicon, and the arsenide of Bora shows high mobility not only for electrons but also for holes.
Arsenid Bora showed all the qualities necessary for a good semiconductor, said scientists, and in previous studies they showed that the Bora Arsenide had a very good width of the prohibited area and a high thermal conductivity, and in a new work they studied the mobility of electrons and holes, quasi-participants, which were formed at the site of an electron that passed into the next atom.
The results of the study showed that the mobility of both electrons and holes in the new material exceeded the same characteristics in silicon, and scientists noted that the electronic properties of the boron cube arsenide were originally predicted on the basis of quantum and mechanical calculations of the density function.
It's important because, of course, we have both positive and negative charges in semiconductors, so if you build a device, you need material in which both electrons and holes move with less resistance.
Silicon is one of the most common elements on Earth, and this material has become the foundation of many modern technologies, ranging from solar elements to computer chips, but its properties as a semiconductor are far from perfect, noting the authors of the work. Although it can easily pass electrons through its structure, it is much less adapted to "holes." Moreover, silicon does not conduct heat very well, creating problems with overheating.
Scientists point out that new material is potentially capable of replacing silicon, but it is necessary first to develop cheap ways of producing quality material, and it is also necessary to evaluate a number of other properties of boron arsenide — for example, how well it will work in the long term.
Previously, Hytech spoke of the development of technology to create cheap magnesium dibroid semiconductors.
Image on the cover: Christiane Daniloff, MIT