Results of proton irradiations of large area strip detectors made on high-resistivity Czochralski silicon

We have processed full-size strip detectors on Czochralski grown silicon wafers with resistivity of about 1.2 kOmega cm. Wafers grown with Czochralski method intrinsically contain high concentrations of oxygen, and thus have potential for high radiation tolerance. Detectors and test diodes were irradiated with 10 MeV protons. The 1-MeV neutron equivalent irradiation doses were 1.6 x 10(14) and 8.5 x 10(13) cm(-2) for detectors, and up to 5.0 x 10(14) cm(-3) for test diodes. After irradiations, depletion voltages and leakage currents were measured. Czochralski silicon devices proved to be significantly more radiation hard than the reference devices made on traditional detector materials. (C) 2004 Elsevier B.V. All rights reserved.