Metal semiconductor metal photodetectors

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H01L 31/02 (2006.01) H01L 31/028 (2006.01) H01L 31/07 (2006.01) H01L 31/108 (2006.01) H01L 31/18 (2006.01)

Patent

CA 2161161

MSM-photodetectors are produced using implanted n-type Si and interdigitated electrodes deposited on the implanted surface. The implantation process decreases the carrier lifetime by several orders of magnitude. By implanting silicon with fluorine or oxygen, the bandwidth is increased relatively to unimplanted MSM photodetectors. Exemplary implanted photodetectors exhibited 3-dB bandwidths which were faster by an order of magnitude compared to their unimplanted counterparts. The detectors are thus compatible with multi-gigabit per second operation and monolithic integration with silicon electronics.

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