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 MoS2 nanosheets are inkjet-printed into ultrathin semiconducting channels, resulting in high on/off current ratios up to 103. 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 MoS2 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 MoS2 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 Pb2+ in water down to 2 ppb. This work paves the way for additive nanomanufacturing of FET-based sensors and related devices using 2D nanomaterials.
| Original language | English (US) |
|---|---|
| Article number | 2301288 |
| Journal | Advanced Materials Technologies |
| Volume | 8 |
| Issue number | 22 |
| DOIs | |
| State | Published - Nov 24 2023 |
Funding
This work was primarily supported by the National Science Foundation Scalable Nanomanufacturing Program (NSF CMMI-1727846 and NSF CMMI-2039268) and the Future Manufacturing Research Grant Program (NSF CMMI-2037026). This work was also supported by the Laboratory Directed Research and Development (LDRD) program from Argonne National Laboratory, provided by the Director, Office of Science, of the U.S. Department of Energy under Contract No. DE-AC02-06CH11357. Use of the Center for Nanoscale Materials, an Office of Science user facility, was supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract No. DE-AC02-06CH11357. This study also utilized instrumentation within the Northwestern University NUANCE Center, which is supported by the Soft and Hybrid Nanotechnology Experimental (ShyNE) Resource (NSF ECCS-2025633), the International Institute for Nanotechnology (IIN), and the Northwestern University Materials Research Science and Engineering Center (MRSEC) program (NSF DMR-1720139). This work was primarily supported by the National Science Foundation Scalable Nanomanufacturing Program (NSF CMMI‐1727846 and NSF CMMI‐2039268) and the Future Manufacturing Research Grant Program (NSF CMMI‐2037026). This work was also supported by the Laboratory Directed Research and Development (LDRD) program from Argonne National Laboratory, provided by the Director, Office of Science, of the U.S. Department of Energy under Contract No. DE‐AC02‐06CH11357. Use of the Center for Nanoscale Materials, an Office of Science user facility, was supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract No. DE‐AC02‐06CH11357. This study also utilized instrumentation within the Northwestern University NUANCE Center, which is supported by the Soft and Hybrid Nanotechnology Experimental (ShyNE) Resource (NSF ECCS‐2025633), the International Institute for Nanotechnology (IIN), and the Northwestern University Materials Research Science and Engineering Center (MRSEC) program (NSF DMR‐1720139).
Keywords
- MoS
- additive manufacturing
- coffee-ring effects
- graphene
- thin-film transistors
ASJC Scopus subject areas
- General Materials Science
- Mechanics of Materials
- Industrial and Manufacturing Engineering