… Chemical elements doped for use in electronics, in the form of discs, wafers or similar forms; chemical compounds doped for use in electronics. …
Explanatory notes
… 38.18 ‑ Chemical elements doped for use in electronics, in the form … and selenium) doped with, for example, boron or phosphorus, generally in a proportion of the order of one part per … discs, wafers or similar forms. The heading covers such crystals, polished or not, whether or not coated with a …