Polarization-sensitive near-infrared photodetectors based on quasi-one-dimensional Sb2Se3 nanotubes
In this work, we study the chemical vapor deposition growth of Sb2Se3 nanotubes and investigate their novel applications in polarization-sensitive near-infrared photodetectors. The grown Sb2Se3 nanotubes present a high crystal quality with an average length of 23.96 µm, an average width of 0.99 µm,...
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Veröffentlicht in: | Journal of alloys and compounds 2023-03, Vol.937, p.168284, Article 168284 |
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Sprache: | eng |
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Zusammenfassung: | In this work, we study the chemical vapor deposition growth of Sb2Se3 nanotubes and investigate their novel applications in polarization-sensitive near-infrared photodetectors. The grown Sb2Se3 nanotubes present a high crystal quality with an average length of 23.96 µm, an average width of 0.99 µm, and an average height of 315 nm. The fabricated singular Sb2Se3 nanotube-based photodetector exhibits a wide spectral response, ranging from visible to near-infrared light regions (400–980 nm), as well as a peak photo-response under the illumination of near-infrared (830 nm) light. At room temperature and standard atmospheric pressure, the Sb2Se3 nanotube photodetector presents a large photocurrent on/off ratio of 364, a high responsivity of 4.39 A W−1, a good specific detectivity of 9.63 × 1010 Jones, and a high external quantum efficiency of 655% under the illumination of 830 nm light. The identified performance can be attributed to intrinsic characteristics of this compound coupled with a highly uniform Sb2Se3 nanotube crystalline structure. The Sb2Se3 nanotube photodetector also exhibits excellent stability after> 200 photo-switching cycles. Most notably, the Sb2Se3 nanotube photodetector presents a large linear dichroic ratio of 3.95 under the illumination of 830 nm light, revealing its great potential in near-infrared polarized photodetection applications.
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•High performance near-infrared Sb2Se3 nanotube-based photodetectors are fabricated.•The detector has a wide photo-response (400–980 nm) with a peak response at 830 nm.•The detector shows a high responsivity of 4.39 A/W and specific detectivity of 9.63 × 1010 Jones at 830 nm.•The detector exhibits excellent stability after> 200 photo-switching cycles.•The detector presents a large linear dichroic ratio of 3.95 under 830 nm polarized light. |
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ISSN: | 0925-8388 1873-4669 |
DOI: | 10.1016/j.jallcom.2022.168284 |