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Proceedings Paper

A high-efficiency low-noise signal amplification mechanism for photodetectors
Author(s): Mohammad Abu Raihan Miah; Iftikhar Ahmad Niaz; Yu-Hsin Liu; David Hall; Yu-Hwa Lo
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Paper Abstract

Recently we discovered a signal amplification mechanism to amplify photocurrent with high efficiency and low noise. Unlike conventional impact ionization used in avalanche photodetectors, the new amplification mechanism can produce high (>1000) gain with very low excess noise factor (<2 for Si) under very low bias voltage (3V). The new amplification mechanism offers a promising solution for light detection for Si-photonics, imaging, and sensing. Physics of this mechanism lies in two subsequent processes i) Auger excitation between mobile and highly localized electrons and ii) electron-phonon coupling. In this paper, experimental results are supported by the proposed physical model using simulations within density functional theory (DFT) framework.

Paper Details

Date Published: 20 February 2017
PDF: 8 pages
Proc. SPIE 10108, Silicon Photonics XII, 101080X (20 February 2017); doi: 10.1117/12.2253792
Show Author Affiliations
Mohammad Abu Raihan Miah, Univ. of California, San Diego (United States)
Iftikhar Ahmad Niaz, Univ. of California, San Diego (United States)
Yu-Hsin Liu, Univ. of California, San Diego (United States)
David Hall, Univ. of California, San Diego (United States)
Yu-Hwa Lo, Univ. of California, San Diego (United States)


Published in SPIE Proceedings Vol. 10108:
Silicon Photonics XII
Graham T. Reed; Andrew P. Knights, Editor(s)

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