ABSTRACT Scalable production of optoelectronic‐grade 2D materials is critical for their adoption in high‐performance printed electronic applications. While liquid‐phase exfoliation (LPE) is valued for its industrial compatibility, conventional LPE methods based on sonication or shear mixing struggle to deliver high‐throughput exfoliation of optoelectronically active semiconducting 2D materials. Meanwhile, wet jet milling (WJM), driven by intense shear and turbulent collision forces, offers a promising alternative to overcome this bottleneck. However, previous WJM efforts aimed at exfoliating 2D semiconductors have relied on toxic solvents that present environmental concerns, especially when implemented at the industrial scale. Here, we employ ethyl cellulose as a stabilizing polymer in ethanol as an environmentally benign and scalable dispersion medium for efficient exfoliation of MoS 2 nanosheets via WJM. Importantly, the Reynolds number, as a measure of the governing fluid dynamics, can be tuned to maximize turbulent flow, thereby facilitating high‐throughput exfoliation of optoelectronic‐grade MoS 2 . This approach achieves 85% exfoliation conversion efficiency and throughput of 8.2 g h −1 , establishing a benchmark for scalable MoS 2 nanosheet exfoliation. The optoelectronic quality of the resulting MoS 2 nanosheets is validated by fabricating screen‐printed photodetector arrays, demonstrating high photoresponsivities of 426 mA W −1 with fast response rise times of 84 µs.
Khalaj et al. (Wed,) studied this question.