dc.contributor.authorYu, Xuechao
dc.contributor.authorLi, Yangyang
dc.contributor.authorHu, Xiaonan
dc.contributor.authorZhang, Daliang
dc.contributor.authorTao, Ye
dc.contributor.authorLiu, Zhixiong
dc.contributor.authorHe, Yongmin
dc.contributor.authorMd. Azimul Haque
dc.contributor.authorLiu, Zheng
dc.contributor.authorWu, Tom
dc.contributor.authorWang, Qi Jie
dc.identifier.citationYu, X., Li, Y., Hu, X., Zhang, D., Tao, Y., Liu, Z., . . . Wang, Q. J. (2018). Narrow bandgap oxide nanoparticles coupled with graphene for high performance mid-infrared photodetection. Nature Communications, 9(1), 4299-. doi:10.1038/s41467-018-06776-zen_US
dc.description.abstractThe pursuit of optoelectronic devices operating in the mid-infrared regime is driven by both fundamental interests and envisioned applications ranging from imaging, sensing to communications. Despite continued achievements in traditional semiconductors, notorious obstacles such as the complicated growth processes and cryogenic operation preclude the usage of infrared detectors. As an alternative path towards high-performance photodetectors, hybrid semiconductor/graphene structures have been intensively explored. However, the operation bandwidth of such photodetectors has been limited to visible and near-infrared regimes. Here we demonstrate a mid-infrared hybrid photodetector enabled by coupling graphene with a narrow bandgap semiconductor, Ti2O3 (Eg = 0.09 eV), which achieves a high responsivity of 300 A W−1 in a broadband wavelength range up to 10 µm. The obtained responsivity is about two orders of magnitude higher than that of the commercial mid-infrared photodetectors. Our work opens a route towards achieving high-performance optoelectronics operating in the mid-infrared regime.en_US
dc.description.sponsorshipNRF (Natl Research Foundation, S’pore)en_US
dc.description.sponsorshipMOE (Min. of Education, S’pore)en_US
dc.format.extent8 p.en_US
dc.relation.ispartofseriesNature Communicationsen_US
dc.rights© 2018 The Author(s). This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.en_US
dc.subjectOptical Properties And Devicesen_US
dc.subjectDRNTU::Engineering::Electrical and electronic engineeringen_US
dc.titleNarrow bandgap oxide nanoparticles coupled with graphene for high performance mid-infrared photodetectionen_US
dc.typeJournal Article
dc.contributor.researchCentre for OptoElectronics and Biophotonicsen_US
dc.contributor.researchThe Photonics Instituteen_US
dc.contributor.researchCentre of Programmable Materialsen_US
dc.contributor.schoolSchool of Electrical and Electronic Engineeringen_US
dc.contributor.schoolSchool of Materials Science and Engineeringen_US
dc.description.versionPublished versionen_US

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