Radiation hardness of p-type silicon detectors

Finely segmented silicon detectors made with n-side readout on p-type substrate have emerged as the most promising choice for the replacement of the tracker systems for the CERN LHC upgrade to higher luminosity. They have practically assumed the status of baseline devices for the silicon microstrip layers of the upgrades, and are now also being considered as possible candidates even for the innermost pixel layers. A review of the reasons for the success of the p-type bulk devices is presented here.