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Van der Waals Epitaxial Growth of Mosaic‐Like 2D Platinum Ditelluride Layers for Room‐Temperature Mid‐Infrared Photodetection up to 10.6 µm
Abstract
Mid‐infrared (MIR) photodetection, covering diverse molecular vibrational regions and atmospheric transmission windows, is vital to civil and military purposes. Versatile use of MIR photodetectors is commonly dominated by HgCdTe alloys, InSb, and quantum superlattices, which are limited by strict operation demands, high‐cost, and environmental toxicity. Despite the rapid advances of black phosphorus (BP)‐based MIR photodetectors, these are subject to poor stability and large‐area integration difficulty. Here, the van der Waals (vdW) epitaxial growth of a wafer‐scale 2D platinum ditelluride (PtTe 2) layer is reported via a simple tellurium‐vapor transformation approach. The 2D PtTe 2 layer possesses a unique mosaic‐like crystal structure consisting of single‐crystal domains with highly preferential [001] orientation along the normal direction, reducing the influence of interface defects and ensuring efficient out‐of‐plane carrier transportation. This characteristic, combined with the wide absorption of PtTe 2 and well‐designed vertical device architecture, makes the PtTe 2/Si Schottky junction photodetector capable of sensing ultra‐broadband light of up to 10.6 µm with a high specific detectivity. Also, the photodetector exhibits an excellent room‐temperature infrared‐imaging capability. This approach provides a new design concept for high‐performance, room‐temperature MIR photodetection based on 2D layered materials.
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Cited by
Wu, D., Guo, C., Zeng, L., Ren, X., Shi, Z., Wen, L., Chen, Q., Zhang, M., Li, X. J., Shan, C.-X., et al. (2023) · Light: Science & Applications · doi:10.1038/s41377-022-01047-5 · Cited by 404
Self-citationZeng, L., Han, W., Ren, X., Li, X., Wu, D., Liu, S., Wang, H., Lau, S. P., Tsang, Y. H., Shan, C.-X., et al. (2023) · Nano Letters · doi:10.1021/acs.nanolett.3c02396 · Cited by 291
Self-citationMid-infrared semimetal polarization detectors with configurable polarity transition
Wei, J., Xu, C., Dong, B., Qiu, C.-W., & Lee, C. (2021) · Nature Photonics · doi:10.1038/s41566-021-00819-6 · Cited by 213
Jiang, S., Yang, J., Zhu, L., Xie, J., Guo, W., Zhao, E., Chen, C., Wang, T., Su, F., Zhang, Y., et al. (2022) · Nano Research · doi:10.1007/s12274-022-4168-y · Cited by 10
Metadata
- Authors
- Zeng, L., Wu, D., Jie, J., Ren, X., Hu, X., Lau, S. P., Chai, Y., & Tsang, Y. H.
- Venue
- Advanced Materials
- Publisher
- Wiley
- Published
- 2020-11-09
- Volume
- 32
- Issue
- 52
- Pages
- e2004412-e2004412
- ISSN
- 0935-9648 (ISSN-L)
- 1521-4095
- OpenAlex
- W3106150808
- Cited by
- 419
- References
- 50
- FWCI
- 18.09
- Type
- journal article
- Language
- en
- Open access
- closed
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- CoChat. (2026). Citation check: Van der Waals Epitaxial Growth of Mosaic‐Like 2D Platinum Ditelluride Layers for Room‐Temperature Mid‐Infrared Photodetection up to 10.6 µm. https://app.cochat.ai/papers/10.1002/adma.202004412
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- Zeng, L., Wu, D., Jie, J., Ren, X., Hu, X., Lau, S. P., Chai, Y., & Tsang, Y. H. (2020). Van der Waals Epitaxial Growth of Mosaic‐Like 2D Platinum Ditelluride Layers for Room‐Temperature Mid‐Infrared Photodetection up to 10.6 µm. Advanced Materials. https://doi.org/10.1002/adma.202004412
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