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High bandwidth graphene photodetector with ultrafast, high efficiency performance

Summary

While graphene photodetectors offer great potential as next generation devices over current semiconductor based photodetectors, graphene's low optical absorption results in low efficiency photodetection. This technology resolves the issue of graphene's low optical absorption by integrating a graphene photodetector onto a silicon waveguide, which improves optical absorption and photoresponsivity. This photodetector maintains all of the advantages of graphene-based devices, such as high bandwidth detection abilities and ultrafast carrier dynamics.

Technology Benefits

Ultrafast photodetectionBroad spectral absorption range Enhanced light absorption from graphene Enhanced photoresponsivityImproved photocurrent at zero bias (no added noise)Spectral resolutionEnhanced photoresponsivityPatent Information:Patent Pending (WO/2013/148349)Tech Ventures Reference: IR CU13139

Technology Application

Photodetectors for integrated optoelectronicsPhotodiodesBioimaging devicesBiosensing devices

Detailed Technology Description

None

*Abstract

None

*Inquiry

Teresa FazioColumbia Technology VenturesTel: (212) 854-8444Email: TechTransfer@columbia.edu

*IR

CU13139

*Principal Investigator

*Publications

Gan, X., Shiue, R.J.S., Gao, Y., Meric, I., Heinz, T.F., Shepard, K., Hone, J., Assefa, S., Englund, D. “Chip-integrated ultrafast graphene photodetector with high responsivity” Nature Photonics. 2013 September 15;7:883-887.

Country/Region

USA