A polarization-sensitive, self-powered, broadband and fast Ti3C2Tx MXene photodetector from visible to near-infrared driven by photogalvanic effects

A polarization-sensitive, high on/off ratio and self-powered photodetector based on Nb2CT x and Nd2CT x @MoS2

“…In particular, under the visible light band of 620 nm, the maximum photocurrent can reach 1.5 × 10 −6 A, under the 920 nm infrared light source, the maximum photocurrent can reach 9 × 10 −6 A. we obtained an excellent on/off ratio, which increase with spins and can reach the maximum of 420 for Sample-8, as shown in figure 3(d). This result is much higher than Ti 3 C 2 photodetector in our former work [28]. Furthermore, a very fast photoresponse can be seen in figure S3 (supplementary information).…”

“…Figure 5(c) shows the polarization-dependent photocurrent of the four samples, respectively. Compared with the previously reported Ti-based MXene photodetector, Nb-based photodetector has better polarization sensitivity [28], mainly due to the larger sheet size and abundant oxygen functional groups on the surface.…”

“…However, there are few studies of photodetectors based on the intrinsic properties of MXene materials. Although the Ti 3 C 2 -based photodetector reported by our research group in the early stage has good performance, its polarization extinction ratio is only 1.11 [28]. To further improve the photoelectric performance, Nb 2 C with higher visible-infrared light responsivity and photothermal conversion efficiency was a candidate [29][30][31], which can be synthesized by a selective-etching-assisted liquid exfoliation method.…”

Two-dimensional InTeClO3: an ultrawide-bandgap material with potential application in a deep ultraviolet photodetector

“…The left and right electrodes extend to ±∞ along the transport direction and the entire system extends periodically into the xy plane. In particular, for linearly polarized light, the photocurrent is determined by the following formula 37,53,54 where L stands for the lead electrode; f L is the Fermi distribution function; Γ L is the linewidth function; G <> ph denotes the greater/lesser Green's function of the two-probe system with photon-electron interaction. The detailed theoretical formalism of photocurrent can be found in ref.…”

Progress, Prospects and Challenges of MXene Integrated Optoelectronics Devices

“…[28] For highefficiency LEDs, the flexible MXene electrode was used to know its phototransistors, photothermal therapy, [29] photodetectors, [30,31] and solar cells. [32,33] MXene has been widely used in these fields worldwide, and important advancements have been made in MXene-based solar cells, [32,34] phototransistors, plasmonics, LEDs, photodetectors, [30,31,35] and photothermal therapy. [29,36] Although some reviews have been published on the applications of MXene in optoelectronics, there is a lack of critical analysis on the prospects, challenges, overview of the synthesis methods, mechanisms, and future research directions of MXene.…”