Journal
NANO ENERGY
Volume 55, Issue -, Pages 22-28Publisher
ELSEVIER
DOI: 10.1016/j.nanoen.2018.10.055
Keywords
PMN-PT; Photoluminescence; Nonvolatile; Reversible; Ferroelastic strain
Categories
Funding
- Hong Kong Polytechnic University [1-ZVGH]
- Research Grants Council of the Hong Kong Special Administrative Region [PolyU 152753/16E]
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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)O-3-0.3PbTiO(3) 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.
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