"Persistent opto-ferroelectric responses in molecular ferroelectrics" by Xuanyuan Jiang, Xiao Wang et al.
 

Document Type

Article

Version

Final Published Version

Publication Title

Phys. Rev. Materials

Volume

6

Publication Date

2022

Abstract

Persistent photoresponses require optical excitations to metastable states, which are rare of ionic origin due to the indirect photon-ion interaction. In this work, we explore the photoinduced metastable proton states in the proton-transfer type molecular ferroelectric croconic acid. We observe that, after the photoexcitation, the changes of structural and ferroelectric properties relax in ∼10^3s, indicating persistent photoresponses of ionic origin. In contrast, the photoconductivity relaxes within 1 s. The 10^3s timescale suggests that the ionic metastable states result from proton transfer both along and out of the hydrogen bonds. This discovery unveils an ionic mechanism for the phototunability, which offers persistent opto-ferroelectric control for proton-transfer type molecular ferroelectrics.

DOI

https://doi.org/10.1103/PhysRevMaterials.6.074412

Plum Print visual indicator of research metrics
PlumX Metrics
  • Usage
    • Downloads: 108
    • Abstract Views: 11
  • Captures
    • Readers: 5
see details

Included in

Physics Commons

Share

COinS