arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2011.14612physics.app-phcond-mat.mtrl-sciphysics.optics
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Te超掺杂硅基中波段红外探测器

Silicon-based Intermediate-band Infrared Photodetector realized by Te Hyperdoping

Mao Wang, Eric García-Hemme, Yonder Berencén, René Hübner, Yufang Xie, Lars Rebohle, Chi Xu, Harald Schneider, Manfred Helm, Shengqiang Zhou

摘要:

硅基光电探测器满足低成本和环境友好的标准,并可以使芯片上互补金属氧化物半导体(CMOS)兼容的光子系统的发展。然而,由于Si的固有带隙,将其室温光响应扩展到中波长红外(MWIR)区域仍然具有挑战性。在这里,我们报告了一个全面的研究,室温MWIR光电探测器的基础上硅超掺杂碲。实验结果表明,在1.0-1.9 μm波长范围内,该器件的光谱响应可达5 μm,探测性能略低于商用器件。我们还研究了背景噪声与Te超掺杂硅光电二极管灵敏度之间的相关性,发现在1 μm和1.55 μm处的最大室温比探测率分别为3.2 x 10^1/2 cmHz^{1/2} W ^{-1}和9.2 x 10^8 cmHz^{1/2}W^{-1}。这项工作有助于为建立一个在室温下工作的硅基宽带红外光子系统铺平道路。

英文摘要:

Si-based photodetectors satisfy the criteria of low-cost and environmental-friendly, and can enable the development of on-chip complementary metal-oxide-semiconductor (CMOS)-compatible photonic systems. However, extending their room-temperature photoresponse into the mid-wavelength infrared (MWIR) regime remains challenging due to the intrinsic bandgap of Si. Here, we report on a comprehensive study of a room-temperature MWIR photodetector based on Si hyperdoped with Te. The demonstrated MWIR p-n photodiode exhibits a spectral photoresponse up to 5 μm and a slightly lower detector performance than the commercial devices in the wavelength range of 1.0-1.9 μm. We also investigate the correlation between the background noise and the sensitivity of the Te-hyperdoped Si photodiode, where the maximum room-temperature specific detectivity is found to be 3.2 x 10^12 cmHz^{1/2}W^{-1} and 9.2 x 10^8 cmHz^{1/2}W^{-1} at 1 μm and 1.55 μm, respectively. This work contributes to pave the way towards establishing a Si-based broadband infrared photonic system operating at room temperature.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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