The naming of doped semiconductors as "n-type" (for donor-doped) and "p-type" (for acceptor-doped) is ubiquitous. But I am having a hard time digging up where this naming tradition comes from and how it has come to be so widely accepted. From my perspective, there is nothing intuitive about this choice of notation. Henceforth the question:
Where does the tradition of labelling donor-doped extrinsic semiconductors as "n" and acceptor-doped as "p" come from?