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Effects of Plastic Deformation on Charge Transport in Mercuric Iodide Radiation Detectors
Published online by Cambridge University Press: 26 February 2011
Abstract
The effects of bulk plastic deformation of mercuric iodide (HgI2), upon electronic properties which are relevant to the performance of HgI2 as a radiation detector, were examined experimentally. Hole lifetimes, as well as hole and electron mobilities, were measured at various stages of sample deformation. Hole lifetimes decreased by a factor of 2 under strains of several percent; carrier mobilities did not change significantly, except during creep loading where electron and hole mobilities decreased by about 65% and 25%, respectively. Additionally, dark current measurements were made on specimens with varying degrees of accumulated plastic strain; dark current values did not strongly reflect the extent of plastic damage in deformed specimens.
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- Copyright © Materials Research Society 1991