Thick epitaxial layers have been grown using Low Pressure Vapour Phase
Epitaxy techniques with low free carrier concentrations . This type of material
is attractive as a medium for X-ray detection, because of its high conversion
efficiency for X-rays in the medically interesting energy range.Comment: 4 pages. PS file only - original in WORD. Also available at
http://ppewww.ph.gla.ac.uk/preprints/97/07
