Development of a high-density silicon photomultiplier

• Published in: Journal of the Korean Physical Society Vol. 64; no. 5; pp. 655 - 658
• Main Authors: Jeon, Jin-A, Lee, Hye Young, Park, Il H., Lee, Jik
• Format: Journal Article
• Language: English
• Published: Seoul The Korean Physical Society 01.03.2014; 한국물리학회
• Subjects: Mathematical and Computational Physics; Particle and Nuclear Physics; Physics; Physics and Astronomy; Theoretical; 물리학; Photomultipliers; Photon count sensor; Geiger mode photodiode; Photodetectors; SiPM
• ISSN: 0374-4884; 1976-8524
• DOI: 10.3938/jkps.64.655

The silicon photomultiplier (SiPM) with a capability for single-photon counting is an extremely sensitive detector for visible light. A photo-sensor consisting of SiPM arrays can be used as a fast image sensor particularly in the environment of extremely low light. The reducing the pixel size is a natural step forward to realize a high-resolution image for which a large number of pixels is required. We have fabricated a high-density SiPM consisting of 10 3 photodiode micropixels in an area of 0.5 × 0.5 mm 2 . The SiPM has an amplification factor of 5.5 × 10 5 at a bias voltage of 58.5 V. In this letter, we describe the design, fabrication and performance of the high-density SiPM.