Photodetector for mid-infrared applications using few-layer vanadium carbide MXene

Salem Altaleb; Jiachi Ye; Belal Jahannia; Chandraman Patil; Hao Wang; Navid Asadizanjani; Elham Heidari; Hamed Dalir

doi:10.1117/12.3003232

18 April 2024 Photodetector for mid-infrared applications using few-layer vanadium carbide MXene

Salem Altaleb, Jiachi Ye, Belal Jahannia, Chandraman Patil, Hao Wang, Navid Asadizanjani, Elham Heidari, Hamed Dalir

Proceedings Volume PC12888, 2D Photonic Materials and Devices VII; PC128880H (2024) https://doi.org/10.1117/12.3003232
Event: SPIE OPTO, 2024, San Francisco, California, United States

Abstract

Here, we present a vanadium carbide (V₂C) mid-infrared (mid-IR) photodetector. Drop casting and spin coating a silicon substrate with a thin silicon oxide layer produced the V2C photodetector. Isopropyl alcohol and nitrogen gas drying increased material quality. E-beam lithography and metal deposition of Au/Ti contacts on V₂C flakes carefully made electrical connections. Electrical bias and 2 μm laser light evaluated the V₂C photodetector’s dark current and photocurrent responses. Photocurrent response changed dramatically, matching FTIR spectroscopy findings. V₂C’s peak responsivity of 2.65 A/W demonstrated mid-IR photodetection. To test scalability, we created devices with 2-5 μm channels. For specialized sensing, photocurrent increases with channel length. Onchip waveguides and photonic circuits might use V2C photodetectors. V₂C’s mid-IR photodetector exhibits its promise as a cutting-edge optoelectronics and integrated photonics material. This work expands mid-IR-sensing photodetector technology.

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Salem Altaleb, Jiachi Ye, Belal Jahannia, Chandraman Patil, Hao Wang, Navid Asadizanjani, Elham Heidari, and Hamed Dalir "Photodetector for mid-infrared applications using few-layer vanadium carbide MXene", Proc. SPIE PC12888, 2D Photonic Materials and Devices VII, PC128880H (18 April 2024); https://doi.org/10.1117/12.3003232

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