Visible Near-Infrared Photodetection Based on TaNiSe/WSe Van Der Waals Heterostructures
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The increasing interest in two-dimensional materials with unique crystal structures and novel band characteristics has provided numerous new strategies and paradigms in the field of photodetection. However, as the demand for wide-spectrum detection increases, the size of integrated systems and the limitations of mission modules pose significant challenges to existing devices. In this paper, we present a van der Waals heterostructure photodetector based on TaNiSe/WSe, leveraging the inherent characteristics of heterostructures. Our results demonstrate that this detector exhibits excellent broad-spectrum detection ability from the visible to the infrared bands at room temperature, achieving an extremely high on/off ratio, without the need for an external bias voltage. Furthermore, compared to a pure material detector, it exhibits a fast response and low dark currents (~3.6 pA), with rise and fall times of 278 μs and 283 μs for the response rate, respectively. Our findings provide a promising method for wide-spectrum detection and enrich the diversity of room-temperature photoelectric detection.
Room-Temperature Band-Aligned Infrared Heterostructures for Integrable Sensing and Communication.
Xiao K, Zhang S, Zhang K, Zhang L, Wen Y, Tian S Adv Sci (Weinh). 2024; 11(36):e2401716.
PMID: 38840455 PMC: 11423140. DOI: 10.1002/advs.202401716.