@article{TEXTUAL,
      recid = {7330},
      author = {Sui, Xiaoyu and Rangnekar, Sonal V. and Lee, Jaesung and  Liu, Stephanie E. and Downing, Julia R. and Chaney, Lindsay  E. and Yan, Xiaodong and Jang, Hyun-June and Pu, Haihui and  Shi, Xiaoao and Zhou, Shiyu and Hersam, Mark C. and Chen,  Junhong},
      title = {Fully Inkjet-Printed, 2D Materials-Based Field-Effect  Transistor for Water Sensing},
      journal = {Advanced Materials Technologies},
      address = {2023-08-15},
      number = {TEXTUAL},
      abstract = {Despite significant progress in solution-processing of 2D  materials, it remains challenging to reliably print  high-performance semiconducting channels that can be  efficiently modulated in a field-effect transistor (FET).  Herein, electrochemically exfoliated MoS<sub>2</sub>  nanosheets are inkjet-printed into ultrathin semiconducting  channels, resulting in high on/off current ratios up to  10<sup>3</sup>. The reported printing strategy is reliable  and general for thin film channel fabrication even in the  presence of the ubiquitous coffee-ring effect. Statistical  modeling analysis on the printed pattern profiles suggests  that a spaced parallel printing approach can overcome the  coffee-ring effect during inkjet printing, resulting in  uniform 2D flake percolation networks. The uniformity of  the printed features allows the MoS<sub>2</sub> channel to  be hundreds of micrometers long, which easily accommodates  the typical inkjet printing resolution of tens of  micrometers, thereby enabling fully printed FETs. As a  proof of concept, FET water sensors are demonstrated using  printed MoS<sub>2</sub> as the FET channel, and printed  graphene as the electrodes and the sensing area. After  functionalization of the sensing area, the printed water  sensor shows a selective response to Pb<sup>2+</sup> in  water down to 2 ppb. This work paves the way for additive  nanomanufacturing of FET-based sensors and related devices  using 2D nanomaterials.},
      url = {http://knowledge.uchicago.edu/record/7330},
}