articleScienceJan 29, 2026Closed access

Wafer-scale ultrathin and uniform van der Waals ferroelectric oxide

Beijing National Laboratory for Molecular Sciences · Peking University · +2 more institutions

PubMed
Indexed incrossrefpubmed

Abstract

Ferroelectrics have great potential for nonvolatile memory and next-generation electronics, but conventional ferroelectric oxide films generally suffer structural nonuniformity, interfacial depolarization, and performance degradation, particularly when downscaled to advanced technology nodes. We demonstrate uniform, wafer-scale synthesis and back-end-of-line–compatible integration of ultrathin van der Waals (vdW) high-dielectric constant ferroelectric oxide Bi 2 SeO 5 , retaining an optimal coercive field and robust ferroelectricity at monolayer thickness. Ultrathin vdW ferroelectric oxides formed atomically uniform interfaces with two-dimensional semiconductors and yielded ferroelectric field-effect…

Citation impact

7
total citations
FWCI
61.26
Percentile
100%
References
210
Too recent for citation history.

Authors

21

Topics & keywords

Keywords
  • Ferroelectricity
  • van der Waals force
  • Non-volatile memory
  • Monolayer
  • Transistor
  • Oxide
  • Voltage
  • Field-effect transistor
UN Sustainable Development Goals
  • Affordable and clean energy
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