Scalable Fabrication of Quasi-One-Dimensional van der Waals Ta2Pt3Se8 Nanowire Thin Films via Solution Processing for NO2 Gas Sensing over Large Areas

Authors
Choi, Kyung HwanLee, Sang HoonKang, JinsuZhang, XiaojieJeon, JihoBang, Hyeon-SukKim, YeongjinKim, DahoonKim, Kyung InKim, Yeong HyeopOh, Hyung-SukChang, JongwhaLee, Jae-HyunYu, Hak KiChoi, Jae-Young
Issue Date
2024-07
Publisher
American Chemical Society
Citation
ACS Applied Materials & Interfaces, v.16, no.27, pp.35463 - 35473
Abstract
Solution-based processing of van der Waals (vdW) one- (1D) and two-dimensional (2D) materials is an effective strategy to obtain high-quality molecular chains or atomic sheets in a large area with scalability. In this work, quasi-1D vdW Ta2Pt3Se8 was exfoliated via liquid phase exfoliation (LPE) to produce a stably dispersed Ta2Pt3Se8 nanowire solution. In order to screen the optimal exfoliation solvent, nine different solvents were employed with different total surface tensions and polar/dispersive (P/D) component (P/D) ratios. The LPE behavior of Ta2Pt3Se8 was elucidated by matching the P/D ratios between Ta2Pt3Se8 and the applied solvent, resulting in N-methyl-2-pyrrolidone (NMP) as an optimal solvent owing to the well-matched total surface tension and P/D ratio. Subsequently, Ta2Pt3Se8 nanowire thin films are manufactured via vacuum filtration using a Ta2Pt3Se8/NMP dispersion. Then, gas sensing devices are fabricated onto the Ta2Pt3Se8 nanowire thin films, and gas sensing property toward NO2 is evaluated at various thin-film thicknesses. A 50 nm thick Ta2Pt3Se8 thin-film device exhibited a percent response of 25.9% at room temperature and 32.4% at 100 degrees C, respectively. In addition, the device showed complete recovery within 14.1 min at room temperature and 3.5 min at 100 degrees C, respectively.
Keywords
LIQUID-PHASE EXFOLIATION; 2-DIMENSIONAL MATERIALS; GRAPHENE; NANOSHEETS; 1D van der waals; liquid phase exfoliation; dispersion; solution processing; thin-film; gas sensor
ISSN
1944-8244
URI
https://pubs.kist.re.kr/handle/201004/150254
DOI
10.1021/acsami.4c05091
Appears in Collections:
KIST Article > 2024
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