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Anomalous piezoelectricity in two-dimensional graphene nitride nanosheets

Author

Listed:
  • Matthew Zelisko

    (University of Houston)

  • Yuranan Hanlumyuang

    (Kasetsart University)

  • Shubin Yang

    (Rice University)

  • Yuanming Liu

    (University of Washington)

  • Chihou Lei

    (University of Washington)

  • Jiangyu Li

    (University of Washington)

  • Pulickel M. Ajayan

    (Rice University)

  • Pradeep Sharma

    (University of Houston
    University of Houston)

Abstract

Piezoelectricity is a unique property of materials that permits the conversion of mechanical stimuli into electrical and vice versa. On the basis of crystal symmetry considerations, pristine carbon nitride (C3N4) in its various forms is non-piezoelectric. Here we find clear evidence via piezoresponse force microscopy and quantum mechanical calculations that both atomically thin and layered graphitic carbon nitride, or graphene nitride, nanosheets exhibit anomalous piezoelectricity. Insights from ab inito calculations indicate that the emergence of piezoelectricity in this material is due to the fact that a stable phase of graphene nitride nanosheet is riddled with regularly spaced triangular holes. These non-centrosymmetric pores, and the universal presence of flexoelectricity in all dielectrics, lead to the manifestation of the apparent and experimentally verified piezoelectric response. Quantitatively, an e11 piezoelectric coefficient of 0.758 C m−2 is predicted for C3N4 superlattice, significantly larger than that of the commonly compared α-quartz.

Suggested Citation

  • Matthew Zelisko & Yuranan Hanlumyuang & Shubin Yang & Yuanming Liu & Chihou Lei & Jiangyu Li & Pulickel M. Ajayan & Pradeep Sharma, 2014. "Anomalous piezoelectricity in two-dimensional graphene nitride nanosheets," Nature Communications, Nature, vol. 5(1), pages 1-7, September.
    • Handle: RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms5284
    DOI: 10.1038/ncomms5284
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    Cited by:

    1. Yi Hu & Lukas Rogée & Weizhen Wang & Lyuchao Zhuang & Fangyi Shi & Hui Dong & Songhua Cai & Beng Kang Tay & Shu Ping Lau, 2023. "Extendable piezo/ferroelectricity in nonstoichiometric 2D transition metal dichalcogenides," Nature Communications, Nature, vol. 14(1), pages 1-12, December.

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