208714 ⎘
Semiconductor devices sensitive to infra-red radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof in which radiation controls flow of current through the device, e.g. photoresistors characterised by at least one potential-jump barrier or surface barrier, e.g. phototransistors; Devices sensitive to very short wavelength, e.g. X-rays, gamma-rays or corpuscular radiation of the bulk effect radiation detector type, e.g. Ge-Li compensated PIN gamma-ray detectors Li compensated PIN gamma-ray detectors