Tellurium-hyperdoped Si for infrared optoelectronics
Tellurium-hyperdoped Si for infrared optoelectronics
Wang, M.; Shaikh, M. S.; Berencen, Y.; Hübner, R.; Helm, M.; Prucnal, S.; Zhou, S.
In this work, we report on the preparation of Te-hyperdoped Si. The hyperdoped Si layers are homogeneous, do not show cellular breakdown, and have a flat surface. Based on the obtained materials, we demonstrate a room-temperature mid-wavelength infrared Si p-n photodiode working in photovoltaic mode. The fabricated photodiode exhibits enhanced performance, e.g. regarding spectral photoresponse, specific detectivity, bandwidth and response speed. Moreover, inherited from the high free carrier concentration, mid-infrared-localized surface plasmon resonances (LSPR) are also observed in hyperdoped Si. We show that the mid-infrared LSPR can be further enhanced and spectrally extended to the far-infrared range by fabricating two-dimensional arrays of micrometer-sized antennas on a Te-hyperdoped Si chip. Since Te-hyperdoped Si can also work as an infrared photodetector, we believe that our results will unlock the route toward the direct integration of plasmonic sensors within a one-chip CMOS platform, greatly advancing the possibility of mass manufacturing of Si-based infrared photonic systems.
Involved research facilities
- Ion Beam Center DOI: 10.17815/jlsrf-3-159
Related publications
- DOI: 10.17815/jlsrf-3-159 is cited by this (Id 37082) publication
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Lecture (Conference)
ISTDM-ICSI-2023, 21.-25.05.2023, Como, Italy
Permalink: https://www.hzdr.de/publications/Publ-37082