Reversible and nonvolatile tuning of photoluminescence response by electric field for reconfigurable luminescent memory devices

Ming Zheng, Hailing Sun, Man Kit Chan, K. W. Kwok

Research output: Journal article publicationJournal articleAcademic researchpeer-review

25 Citations (Scopus)

Abstract

Luminescent materials with reversibly tunable ability under external stimuli, e.g., strain and electric field, are of great interest for developing advanced multifunctional optical devices. An important problem that has not been solved is the nonvolatility of field-driven switching for information storage applications. Here, we first propose a design principle that the electrically induced ferroelastic domain engineering in 0.7Pb(Mg1/3Nb2/3)O3-0.3PbTiO3 substrates can be used to achieve robust nonvolatile tuning of photoluminescence performance in elastically-coupled Pr-doped Ba0.85Ca0.15Ti0.9Zr0.1O3 thin films in a reversible way. Such a nonvolatile and reversible response is striking, which stems from the intermediate lateral-polarization-induced stable strain state in the substrate during domain switching. The quantitative determination of strain-mediated photoluminescence intensity is also addressed by virtue of the converse piezoelectric effect. This study points to an effective strategy for realizing piezo-luminescent effect in ferroelectric thin-film heterostructures and demonstrates great potentials in designing reconfigurable, low-power nonvolatile luminescent memory devices.

Original languageEnglish
Pages (from-to)22-28
Number of pages7
JournalNano Energy
Volume55
DOIs
Publication statusPublished - 1 Jan 2019

Keywords

  • Ferroelastic strain
  • Nonvolatile
  • Photoluminescence
  • PMN-PT
  • Reversible

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)
  • Electrical and Electronic Engineering

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