The paper-based photodetector has recently captivated a great deal of attention in various optoelectronics applications because of facile, cost effective and green synthesis. Two-dimensional transition metal dichalcogenides materials are promising for photodetection under the broad spectral range. In this work, we have fabricated paper-based device by rubbing the tungsten diselenide (WSe 2 ) crystals on paper substrate. Low-cost, facile and green synthesis technique was employed to make a high-performance paper-based WSe 2 photodetector. Paper-based photodetector was fabricated via non-toxic simply rubbing process of WSe 2 nanosheets on lowcost bio-degradable paper. The photodetector shows good responsivity of 72.5 μA W −1 and detectivity at around 2.4×10 7 Jones at very low bias (1.0 V) at wavelength of 780 nm, respectively. Due to good photo-absorption strength, photodetector exhibits excellent photoresponse over wide wavelength range from visible to near infrared. This device also shows very good flexibility with a stable photo-response. This device shows a general and reliable study for the design of photodetectors that is eco-friendly and cost-effective. Overall studied results of the fabricated device indicate that they have the ability to be used in large-scale preparation of the device.

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