Patent ID: 7338829

Claim:
A method of making a detector for the determination of the energy of photons or charged particles, the method comprising the steps of: diffusing lithium into silicon at a temperature between 200 and 250° C. and in an inert-gas atmosphere to produce a component comprised substantially of silicon and having an n layer, an n − layer or an n + layer; removing by chemical etching or by lapping a thickness of about 20 to 50 μm of the n layer, n − layer or n + layer of the component until a dead zone is produced having a thickness of 0.5 to 5 μm such that the dead zone does not emit an electron-hole pair when a charged particle passes or a photon is stopped while measuring a layer resistance at the surface of the n layer, the n − layer, and or the n + layer, wherein the n layer, n − layer or n + layer is removed to the extent that a concentration of lithium ions by means of which n layer, n − layer or n + layer are formed in the silicon substrate reaches between 10 15 /cm 3 and 10 11 /cm 3 ; stopping the removal by etching or lapping when the measured layer resistance has a value between 1000 and 20,000 Ω/cm 2 ; and processing the component so that the detector results.