Dead layer thickness measurement in p-type point contact Germanium detector

P-type point-contact Germanium (pGe) detectors have excellent properties for the studies of low energy neutrino physics, WIMP dark matter search and other physics searches beyond the standard model at the Kuo-Sheng Reactor Neutrino Laboratory (KSNL). A small area of the point-contact electrode, which can significantly reduce the internal capacitance, results in reduction of low electronic noise and energy threshold. The p-type point-contact Ge (pGe) detectors have an inactive layer at the surface caused by lithium diffusion