The type dimension of the High Purity Germanium Crystals market is principally divided into n‑type and p‑type doped crystals, each further differentiated by geometry—coaxial, planar, and segmented configurations. n‑type crystals, doped with donor impurities such as lithium, exhibit superior charge‑carrier mobility, making them preferred for high‑resolution spectroscopy in research settings; they account for roughly 55% of total unit shipments. p‑type crystals, typically doped with boron, demonstrate greater radiation hardness and are dominant in field‑deployed radiation‑detection systems, representing about 35% of the market. Geometrical sub‑segments influence manufacturing complexity and cost: coaxial designs, favored for large‑volume detectors, contribute 40% of revenue; planar detectors, optimized for low‑energy photon detection, capture 30%; segmented crystals, enabling position‑sensitive measurements, hold 20%, while emerging micro‑structured forms occupy the remaining 10%. This taxonomy clarifies how each type underpins distinct value chains and collectively drives the overall market size.