Molybdenum disulfide for photodetectors FIVE


A schematic illustration of monolayer and bilayer MoS2 on an atomic scale. In a bilayer (2L), MoS2 single layers are bound by van der Waals (vdW) forces having a nanoscale distance between the adjacent layers. Atomic layer MoS2 consisting of S–Mo–S atomic structures bonded through vdW forces show strong photodetection over a broad optical spectral range from UV to IR. Lopez-Sanchez et al. reported a photoresponsivity of 880 A W−1 and a detective of 2.5 × 1010 Jones (Jones = cm Hz1/2 W−1) for monolayer MoS2 at a bias gate voltage (VBG) of −70 V and a Vds of 8 V for a 561 nm wavelength under a 150 pW incident power (2.4 × 10−1 mW cm−2), along with a photoresponse in the 400–680 nm wavelength range, as shown in. CVD-grown monolayer MoS2 phototransistors exhibit a photoresponsivity as high as 2200 A W−1, a photogenic of 5000, and a response time of 500 s at room temperature. Pang et al. developed a MoS2-based tribotronic phototransistor by combining a few-layer MoS2 phototransistor with a sliding mode triboelectric nanogenerator (TENG). The photoresponsivity of the MoS2 tribotronic phototransistor increased from 221.03 A W−1 to 727.87 A W−1 with increasing sliding distance from 0 mm to 8 mm under ten mW cm−2 laser power intensity and a 1.0 V drain voltage. This result indicates that the photoresponsivity of the MoS2 phototransistor can be tuned by controlling the sliding distance, enabling self-powered photodetection with a TENG. If you are looking for high quality, high purity, and cost-effective Molybdenum disulfide, or if you require the latest price of Molybdenum disulfide, please feel free to email contact mis-asia.

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