Ge Wafer (100) Undoped, 4" dia x 0.5 mm, 2SP, R:>50 ohm-cm Al2O3 and max loading of 8

and max loading of 8 Kg per shelf Product Dimensions 23"(L) x 31"(W) x 24"(H) Compliance

Polarity: Ga-face

Melting point:                                        710 oC

MTI has granted the patent 201120462024

You can buy it from Amazon and modify it into a sealed room DIY

Ge Wafer (100) Undoped, 4" dia x 0.5 mm, 2SP, R:>50 ohm-cm Al2O3 and max loading of 8Ge Wafer Specification Growing Method: CZ Orientation: (100) + 1. 0 Deg. Wafer Size: 4" dia x 500 microns Surface Polishing: Two sides epi polished Surface roughness : RMS or Ra:~ 10 A(By AFM) Doping: Undoped Conductor type: N type Resistivity: >50 Ohms cm (If you would like to measure the resistivity accurately, please order our Portable 4 Probe Resistivity Testing Instrument.) Package: under 1000 class clean room Typical Properties of Ge Crystal