A Universal Strategy for Synthesis of 2D Ternary Transition Metal Phosphorous Chalcogenides.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 37776266.
- Also identified by DOI 10.1002/adma.202307237.
- No licence information is recorded for this record.
- Because redistribution is not established, this page shows the abstract only. Follow the links below for the full text.
Abstract
The 2D ternary transition metal phosphorous chalcogenides (TMPCs) have attracted extensive research interest due to their widely tunable band gap, rich electronic properties, inherent magnetic and ferroelectric properties. However, the synthesis of TMPCs via chemical vapor deposition (CVD) is still challenging since it is difficult to control reactions among multi-precursors. Here, a subtractive element growth mechanism is proposed to controllably synthesize the TMPCs. Based on the growth mechanism, the TMPCs including FePS<sub>3</sub> , FePSe<sub>3</sub> , MnPS<sub>3</sub> , MnPSe<sub>3</sub> , CdPS<sub>3</sub> , CdPSe<sub>3</sub> , In<sub>2</sub> P<sub>3</sub> S<sub>9</sub> , and SnPS<sub>3</sub> are achieved successfully and further confirmed by Raman, second-harmonic generation (SHG), and scanning transmission electron microscopy (STEM). The typical TMPCs-SnPS<sub>3</sub> shows a strong SHG signal at 1064 nm, with an effective nonlinear susceptibility χ<sup>(2)</sup> of 8.41 × 10<sup>-11</sup> m V<sup>-1</sup> , which is about 8 times of that in MoS<sub>2</sub> . And the photodetector based on CdPSe<sub>3</sub> exhibits superior detection performances with responsivity of 582 mA W<sup>-1</sup> , high detectivity of 3.19 × 10<sup>11</sup> Jones, and fast rise time of 611 µs, which is better than most previously reported TMPCs-based photodetectors. These results demonstrate the high quality of TMPCs and promote the exploration of the optical properties of 2D TMPCs for their applications in optoelectronics.