lithium-drifted germanium crystal

lithium-drifted germanium crystal

[′lith·ē·əm ¦drif·təd jər′mā·nē·əm ′krist·əl]
(electronics)
A high-resolution junction detector, used especially for more penetrating gamma-radiation and higher-energy electrons, produced by drifting lithium ions through a germanium crystal to produce an intrinsic region where impurity-based carrier generation centers are deactivated, sandwiched between a p layer and an n layer.