Journal
ACS NANO
Volume 13, Issue 8, Pages 8804-8810Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsnano.9b01941
Keywords
MXene; InSe; avalanche photodetector; plasmonic effect; 2-dimensional material
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Funding
- Global Frontier Program through the Global Frontier Hybrid Interface Materials (GFHIM) of the National Research Foundation of Korea (NRF) [2013M3A6B1078873]
- Pioneer Research Center Program through the National Research Foundation of Korea - Ministry of Science, ICT & Future Planning [2014M3C1A3053024]
- Construction Technology Research Project - Ministry of Land, Infrastructure and Transport (Korea) [18SCIP-B146646-01]
- Basic Science Research Program through the National Research Foundation of Korea - Korean government (MSIP) [2018R1D1A1A09081931, 2017R1A4A1015400, 2017R1A2A2A05001403]
- National Research Foundation of Korea [2017R1A2A2A05001403, 2018R1D1A1A09081931] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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We demonstrate the application of MXenes, metallic 2D materials of transition-metal carbides, as excellent electrode materials for photonic devices. In this study, we have fabricated an InSe-based photodetector with a Ti2CTx electrode. The photodetector with few-layer, atomically thin, Ti2CTx (MXene) electrodes shows the avalanche carrier multiplication effect, which leads to high device performance. To improve the performance of the InSe/Ti2CTx avalanche photodetector, we can pattern Ti2CTx into nanoribbon arrays (a plasmonic grating structure), which enhances light absorption of the photodetector. The plasmonic InSe/Ti2CTx avalanche photodetector exhibits low dark current (3 nA), high responsivity (1 X 10(5) AW(-1)), and high detectivity (7.3 X 10(12) Jones).
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