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Proceedings Paper

Ultrahigh speed uni-traveling-carrier photodiodes based on materials of short carrier lifetime
Author(s): Jinlin Chen; Junqiang Sun
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Paper 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.

Paper Details

Date Published: 20 February 2009
PDF: 6 pages
Proc. SPIE 7279, Photonics and Optoelectronics Meetings (POEM) 2008: Optoelectronic Devices and Integration, 72791R (20 February 2009); doi: 10.1117/12.823341
Show Author Affiliations
Jinlin Chen, Huazhong Univ. of Science and Technology (China)
Junqiang Sun, Huazhong Univ. of Science and Technology (China)


Published in SPIE Proceedings Vol. 7279:
Photonics and Optoelectronics Meetings (POEM) 2008: Optoelectronic Devices and Integration

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