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Yuji Kuribara

Research interests

My PhD project is about developing a SiGe Single Photon Avalanche Detector (SPAD). A effecient solid-state photodetector at 1.5micron telecommunication wavelength is highly desirable for novel devices but so far there is no good alternative. Silicon SPADs have been out there for some years and are a good alternative to photomultiplier tubes for detecting photons in the visible range. InGaAs SPADs have been fabricated operating ar 1.5micron but they are difficult to integrate in existing Si technologies and work at very low temperatures, rendering the impractical. Ge has an ideal bandgap for such appliances but suffers from a high noise. Si on the other hand has excellent electron avalanche multiplication properties. By growing a layer of Ge on top of Si, one can absorb the photon in the Ge layer and pass on the generated electrons in the Si multiplication layer inducing an avalanche of electrons. If this idea works, we have a very sensitive photodetector ideally suited for mass-production! This project is launched under the UK Silicon Photonics Consortium


Yuji Kuribara was born in Odawara, Japan, on 31.10.1985. He received his bilingual secondary education from Stedelijk College Eindhoven and International Secondary School Eindhoven in Holland and went on to obtain his dual bachelor's degree in Physics and Mathematics from the University of Utrecht, Holland. His master's degree in Physics was granted to him by the University of Amsterdam. Meanwhile he has spent semesters at the University of Rome 1, Italy and the University of Bonn, Germany. His hobbies include karate, debating, cooking and enjoying Italian culture.


Write to:

Department of Physics,

University of Warwick,

Coventry, CV4 7AL

Contact Details:

Office: P522
44 (0)2476 522448
44 (0)2476692016