Conduction Modulation of Solution-Processed 2D Materials

Songwei Liu, Xiaoyue Fan, Yingyi Wen, Pengyu Liu, Yang Liu, Jingfang Pei, Wenchen Yang, Lekai Song, Danmei Pan, Panpan Zhang, Teng Ma, Yue Lin, Gang Wang*, Guohua Hu*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Solution-processed 2D materials hold promise for their scalable applications. However, the random, fragmented nature of the solution-processed nanoflakes and the poor percolative conduction through their discrete networks limit the performance of the enabled devices. To overcome the problem, conduction modulation of the solution-processed 2D materials is reported via Stark effect. Using liquid-phase exfoliated molybdenum disulfide (MoS2) as an example, nonlinear conduction switching with a ratio of >105 is demonstrated by the local fields from the interfacial ferroelectric P(VDF-TrFE). Through density-functional theory calculations and in situ Raman scattering and photoluminescence spectroscopic analysis, the modulation is understood to arise from a charge redistribution in the solution-processed MoS2. Beyond MoS2, the modulation may be shown effective for the other solution-processed 2D materials and low-dimensional materials. The modulation can open their electronic device applications, for instance, thin-film nonlinear electronics and non-volatile memories.

Original languageEnglish
JournalAdvanced Electronic Materials
DOIs
Publication statusAccepted/In press - 2024

Keywords

  • charge redistribution
  • conduction modulation
  • quantum-confined Stark effect
  • solution-processed 2D materials
  • thin-film electronic devices

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Liu, S., Fan, X., Wen, Y., Liu, P., Liu, Y., Pei, J., Yang, W., Song, L., Pan, D., Zhang, P., Ma, T., Lin, Y., Wang, G., & Hu, G. (Accepted/In press). Conduction Modulation of Solution-Processed 2D Materials. Advanced Electronic Materials. https://doi.org/10.1002/aelm.202300799