Publication: Tip Avalanche Photodiode - A new generation Silicon Photomultiplier based on non-planar technology
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2021
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IEEEThe Silicon Photomultiplier (SiPM) is a mature photodetector concept that is applied in a variety of applications ranging from medical imaging to automotive LiDAR systems. Over the last few years, improvements of the sensor performance are gradually approaching to a saturation. In this work we present our new concept to overcome the intrinsic limitations of planar configurations of electrodes. Our non-planar technology is based on focusing and enhancing the electric fields by tip-like electrodes. The shape of the electric field and the lack of typical micro-cell edges, allows us to exclude cell separation boundaries and eliminate dead space around active cell areas. Our design provides a high-density micro-cell layout with a high geometric efficiency. It resolves the well-known trade-off between the detection efficiency and the dynamic range. The first “Tip Avalanche Photodiode” (TAPD) prototypes show a remarkable geometric efficiency above 80% for a micro-cell pitch of 15 μm. This directly translates into a photon detection efficiency (PDE) record peak value of 73% at 600nm with respect to the state-of-the-art SiPMs. Moreover, the PDE remains above a value of 45% up to a wavelength of 800nm with another record value of 22% at 905 nm. The reduced micro-cell capacity allows for a fast recovery time below 4 ns, which improves the operation at high photon rates. Overall, the TAPD is anticipated to be a very promising SiPM generation for various wide-spectral and high-dynamic-range applications in health science, biophysics, particle physics and LiDARs.
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Tip Avalanche Photodiode - A new generation Silicon Photomultiplier based on non-planar technology / Engelmann, E. [et al.] // IEEE Sensors Journal. - 2021. - 10.1109/JSEN.2020.3041556
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https://www.doi.org/10.1109/JSEN.2020.3041556
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https://openrepository.mephi.ru/handle/123456789/23488
https://www.scopus.com/record/display.uri?eid=2-s2.0-85097387645&origin=resultslist
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000616329300048
https://openrepository.mephi.ru/handle/123456789/23488