Electronic Science and Technology ›› 2021, Vol. 34 ›› Issue (10): 81-86.doi: 10.16180/j.cnki.issn1007-7820.2021.10.013

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First Principles Research Progress of Two Dimensional Ferroelectric Materials

WU Chunxiang,ZHONG Chonggui   

  1. School of Sciences, Nantong University, Nantong 226019, China
  • Received:2020-06-11 Online:2021-10-15 Published:2021-10-18
  • Supported by:
    The 13th Five-Year Plan of Educational Science in Nantong of Jiangsu Province(XC2018027);Jiangsu Education Science Planning Project(B-b/2013/02/221)


Due to its inherent size and surface effect, the ferroelectric properties of two-dimensional ferroelectrics are very different from those of traditional bulk ferroelectrics. So far, two-dimensional ferroelectrics have been reported to have many properties, including bulk photoelectric effect, piezoelectric / pyroelectric effect, valley polarization and spin polarization. These properties either depend on ferroelectric polarization or couple with it for electrical control, which makes 2D ferroelectrics suitable for multi-functional nano devices. At present, the research of two-dimensional ferroelectrics in theory, experiment and application is accumulating. This study briefly introduces these theories and methods. Then, the intrinsic and extrinsic origins of two-dimensional ferroelectrics are summarized respectively. Finally, the existing problems and development prospects of two-dimensional ferroelectrics are discussed.

Key words: two dimensional ferroelectric materials, first principles, ferroelectric polarization, photoelectric effect, valley polarization, spin polarization, intrinsic, extrinsic origins

CLC Number: 

  • TN432