Optimized silicon photomultipliers with optical trenches

This paper reports on the electrical characteristics of silicon photomultipliers (SiPM) with optimized optical trench technology. The SiPM arrays were characterized from single pixels up to the full 64×64 pixel device. The data clearly show a perfect scaling of the dark current with the pixel number, thus indicating an almost ideal insulation among the pixels in the whole voltage operating range.

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