Patent ID: 8614111
Filing Date: 2013-12-24
Classification: H01L

Abstract:
1. A method for forming a neutron detector, the method comprising: thinning a backside silicon substrate of a radiation detector, wherein the radiation detector comprises a field effect transistor (FET)-based radiation detector formed on a top silicon layer of a silicon-on-insulator (SOI) substrate, the SOI substrate comprising the top silicon layer, a buried oxide (BOX) layer underneath the top silicon layer, and the backside silicon substrate underneath the BOX layer; forming a neutron converter layer on the thinned backside silicon substrate of the radiation detector to form the neutron detector; applying a voltage to a body contact of neutron detector, the body contact being adjacent to the thinned backside silicon substrate; exposing the neutron converter layer to neutrons; releasing, by the neutron converter layer, secondary charged particles based on the neutrons; and storing an amount of charge in the BOX layer based on the secondary charged particles, wherein the voltage applied to the body contact traps the amount of charge in the BOX layer.