Before revision: See URL Silicon photomultipliers, often called "SiPM" in the literature, are solid-state single-photon-sensitive devices based on Single-photon avalanche diode (SPAD) implemented on common silicon substrate.Détecteurs SiPMSilicon Photom ultiplier Technology at STMicroelectronics From SPAD to SiPM The dimension of each single SPAD can vary from 10 to 100 micrometres, and their density can be up to 10000 per square millimeter.
After revision: Silicon photomultipliers, often called "SiPM" in the literature, are solid-state single-photon-sensitive devices based on Single-photon avalanche diode (SPAD) implemented on common silicon substrate.Détecteurs SiPMSilicon Photom ultiplier Technology at STMicroelectronics From SPAD to SiPM The dimension of each single SPAD can vary from 10 to 100 micrometres, and their density can be up to 10000 per square millimeter.