van der Waals oxide heteroepitaxy for soft transparent electronics

Yugandhar Bitla, Ying-hao Chu*

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

1 Scopus citations

Abstract

The quest for multifunctional, low-power and environment friendly electronics has brought research on materials to the forefront. For instance, as the emerging field of transparent flexible electronics is set to greatly impact our daily lives, more stringent requirements are being imposed on functional materials. Inherently flexible polymers and metal foil templates have yielded limited success due to their incompatible high-temperature growth and non-transparency, respectively. Although the epitaxial-transfer strategy has shown promising results, it suffers from tedious and complicated lift-off-transfer processes. The advent of graphene, in particular, and 2D layered materials, in general, with ultrathin scalability has revolutionized this field. Herein, we review the direct growth of epitaxial functional oxides on flexible transparent mica substratesviavan der Waals heteroepitaxy, which mitigates misfit strain and substrate clamping for soft transparent electronics applications. Recent advances in practical applications of flexible and transparent electronic elements are discussed. Finally, several important directions, challenges and perspectives for commercialization are also outlined. We anticipate that this promising strategy to build transparent flexible optoelectronic devices and improve their performance will open up new avenues for researchers to explore.

Original languageEnglish
Pages (from-to)18523-18544
Number of pages22
JournalNanoscale
Volume12
Issue number36
DOIs
StatePublished - 28 Sep 2020

Keywords

  • EPITAXIAL-GROWTH
  • THIN-FILMS
  • HIGH-PERFORMANCE
  • MUSCOVITE MICA
  • 2-DIMENSIONAL MATERIALS
  • FLEXIBLE HETEROEPITAXY
  • SOLAR-CELLS
  • HETEROSTRUCTURES
  • TRANSISTORS
  • PLATFORM

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