SOLID STATE RADIATION DETECTOR WITH ENHANCED LIFE DURATION

摘要

The invention concerns a solid state radiation detector comprising a solid state photosensitive sensor (1) associated with a converter (2) for converting a radiation to be detected into a radiation whereto the photosensitive sensor (1) is sensitive. The photosensitive sensor (1) comprises one or several photosensitive elements (5) connected to conductors (6, 7) and a passivation layer (8) covering the photosensitive elements (5) and the conductors (6, 7) to protect them. Between the passivation layer (8) and the converter (2) is located a barrier (10) impermeable at least to one species capable of corroding the sensor (1) likely to be released by the converter (2) during at least a chemical reaction. The invention is particularly applicable to radiation detectors for medical radiology.