On-Chip Integrated, Silicon–Graphene Plasmonic Schottky Photodetector with High Responsivity and Avalanche Photogain

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• 作者：Ilya Goykhman ; Ugo Sassi ; Boris Desiatov ; Noa Mazurski ; Silvia Milana ; Domenico de Fazio ; Anna Eiden ; Jacob Khurgin ; Joseph Shappir ; Uriel Levy ; Andrea C. Ferrari
• 刊名：Nano Letters
• 出版年：2016
• 出版时间：May 11, 2016
• 年：2016
• 卷：16
• 期：5
• 页码：3005-3013
• 全文大小：608K
• 年卷期：0
• ISSN：1530-6992

文摘

We report an on-chip integrated metal graphene–silicon plasmonic Schottky photodetector with 85 mA/W responsivity at 1.55 μm and 7% internal quantum efficiency. This is one order of magnitude higher than metal–silicon Schottky photodetectors operated in the same conditions. At a reverse bias of 3 V, we achieve avalanche multiplication, with 0.37A/W responsivity and avalanche photogain ∼2. This paves the way to graphene integrated silicon photonics.