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首页> 外文期刊>Optics Letters >Dark current suppression in an erbium-germanium-erbium photodetector with an asymmetric electrode area
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Dark current suppression in an erbium-germanium-erbium photodetector with an asymmetric electrode area

机译:电极面积不对称的an锗锗光电探测器中的暗电流抑制

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摘要

In this work, suppression of the dark current level in a metal-semiconductor-metal (MSM) photodetector fabricated on the intrinsic (i) Ge is achieved by exploiting (1) the Er electrode, providing a relatively high hole barrier, and (2) the concept of asymmetric electrode area, to minimize the Schottky barrier height lowering effect. Compared with a symmetric MSM photodetector fabricated with Ti electrodes, the dark current level was reduced by a factor of about 80. This low dark current i-Ge MSM photodetector is promising for applications requiring low power and a high photo-to-dark-current ratio.
机译:在这项工作中,通过利用(1)Er电极,提供相对较高的空穴势垒,和(2)抑制在本征(i)Ge上制造的金属-半导体-金属(MSM)光电探测器中的暗电流水平。 )电极面积不对称的概念,以最大程度地降低肖特基势垒高度降低效果。与由Ti电极制成的对称MSM光电探测器相比,暗电流水平降低了约80倍。这种低暗电流i-Ge MSM光电探测器有望用于要求低功率和高光暗电流的应用比。

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