Ultrahigh speed uni-traveling-carrier photodiodes based on materials of short carrier lifetime

Jinlin Chen; Junqiang Sun

doi:10.1117/12.823341

19 February 2009 Ultrahigh speed uni-traveling-carrier photodiodes based on materials of short carrier lifetime

Jinlin Chen, Junqiang Sun

Proceedings Volume 7279, Photonics and Optoelectronics Meetings (POEM) 2008: Optoelectronic Devices and Integration; 72791R (2009) https://doi.org/10.1117/12.823341
Event: Photonics and Optoelectronics Meetings, 2008, Wuhan, China

Abstract

A novel uni-traveling-carrier photodiode based on materials of ultra-short carrier lifetime (ST-UTC-PD) is designed and numerically analyzed. The ST-UTC-PD solves the problem of high dark current of short carrier lifetime photoconductors, while takes advantage of the ultra-high speed response of short lifetime materials. By using ultra-short carrier lifetime materials for the absorption layer of UTC-PD, the limitation of speed by electron diffusion time is overcome, which yields ultrahigh speed response of ST-UTC-PD. The activities of electrons in the absorption layer are analyzed and the two deciding factors to the speed of ST-UTC-PD are discussed.

Citation Download Citation

Jinlin Chen and Junqiang Sun "Ultrahigh speed uni-traveling-carrier photodiodes based on materials of short carrier lifetime", Proc. SPIE 7279, Photonics and Optoelectronics Meetings (POEM) 2008: Optoelectronic Devices and Integration, 72791R (19 February 2009); https://doi.org/10.1117/12.823341

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