Near infrared (NIR) photodetectors based on 2D materials are widely studied for their potential application in next generation sensing, thermal imaging, and optical communication. Construction of van der Waals (vdWs) heterostructure provides a tremendous degree of freedom to combine and extend the features of 2D materials, opening up new functionalities on photonic and optoelectronic devices. Herein, a type-II InSe/PdSe 2 vdWs heterostructure with strong interlayer transition for NIR photodetection is demonstrated. Strong interlayer transition between InSe and PdSe 2 is predicted via density functional theory calculation and confirmed by photoluminance spectroscopy and Kelvin probe force microscopy. The heterostructure exhibits highly sensitive photodetection in NIR region up to 1650 nm. The photoresponsivity, detectivity, and external quantum efficiency at this wavelength respectively reaches up to 58.8 A W −1 , 1 × 10 10 Jones, and 4660%. The results suggest that the construction of vdWs heterostructure with strong interlayer transition is a promising strategy for infrared photodetection, and this work paves the way to developing high-performance optoelectronic devices based on 2D vdWs heterostructures.

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Field effect transistors (FETs) have tremendous applications in electronics industry due to their outstanding features such as small size, easy fabrication, compatibility with integrated electronics, high sensitivity, rapid detection and...

The rapid development of population, industry, and urbanization have generated significant issues including energy consumption and water contamination. Advanced materials are needed to clean up the surroundings and develop potential energy storage devices. Metal sulfides (MSs) nanomaterials are prospective candidates for multidimensional applications in medicine, biology, environmental sciences, and energy production/utilization due to their light absorption, optical characteristics, high specific capacitance, and catalytic/photocatalytic capability. Recent developments showed its use as electrode material for Li, Na, K, and Mg ion batteries, solar cells, and supercapacitors, electrocatalysts for the oxygen/hydrogen evolution reaction, sensors for gases/chemicals, and catalysts/photocatalysts for environmental remediation. Scalable techniques for producing high-quality, low-cost metal sulfides, heterostructures, and hybrids are needed to realize the potential of these interesting materials fully. This review summarizes current achievements in MSs notably, manganese sulfide (MnS), iron sulfide (FeS), cobalt sulfide (CoS), nickel sulfide (NiS), copper sulfide (CuS), zinc sulfide (ZnS), silver sulfide (AgS), cadmium sulfide (CdS), tungsten sufide (WS), tin sulfide (SnS), lead sulfide (PbS), and molybdenum disufide (MOS2) and their efficient physiochemical and biological production to get controlled morphologies, sizes, and compositions.