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SnO: First Stable P-Type 2D Semiconductor Discovered (phys.org)
New submitter Namarrgon writes: Transistors made with Ashutosh Tiwari's new semiconducting material could lead to computers and smartphones that are more than 100 times faster than regular devices. While researchers in this field have recently discovered new types of 2D material such as graphene, molybdenun disulfide and borophene, they have been materials that only allow the movement of N-type, or negative, electrons. In order to create an electronic device, however, you need semiconductor material that allows the movement of both negative electrons and positive charges known as "holes." The tin monoxide material discovered by Tiwari and his team at the University of Utah is the first stable P-type 2D semiconductor material ever in existence.
If you really want to be pedantic, then the negative charges aren't really electrons either. Both the positive and negative charges are quasiparticles, which are particle-like excitations of a large sea of actual electrons in the semiconductor. The collective behaviour of all these electrons then results in something that looks like a single electron with a different mass and sometimes the wrong charge. But it's usually easier to just call these quasiparticles "electrons" and "holes", because that's what they intuitively behave like.