Journal Article

FZJ-2022-00260

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Flexoelectric Thin-Film Photodetectors

Wu, M.Extern* ; Jiang, Z. ; Lou, X. (Corresponding author) ; Zhang, F.Extern* ; Song, D.FZJ* ; Ning, S. ; Guo, M. ; Pennycook, S. J. (Corresponding author)Extern* ; Dai, J.-y. (Corresponding author) ; Wen, Z. (Corresponding author)

2021
ACS Publ. Washington, DC

This record in other databases:      

Please use a persistent id in citations: http://hdl.handle.net/2128/30672  doi:10.1021/acs.nanolett.1c00055

Abstract: The flexoelectric effect, which manifests itself as a strain-gradient-induced electrical polarization, has triggered great interest due to its ubiquitous existence in crystalline materials without the limitation of lattice symmetry. Here, we propose a flexoelectric photodetector based on a thin-film heterostructure. This prototypical device is demonstrated by epitaxial LaFeO3 thin films grown on LaAlO3 substrates. A giant strain gradient of the order of 106/m is achieved in LaFeO3 thin films, giving rise to an obvious flexoelectric polarization and generating a significant photovoltaic effect in the LaFeO3-based heterostructures with nanosecond response under light illumination. This work not only demonstrates a novel self-powered photodetector different from the traditional interface-type structures, such as the p–n and Schottky junctions but also opens an avenue to design practical flexoelectric devices for nanoelectronics applications.

---

Contributing Institute(s):

1. Physik Nanoskaliger Systeme (ER-C-1)

Research Program(s):

1. 5351 - Platform for Correlative, In Situ and Operando Characterization (POF4-535) (POF4-535)

Appears in the scientific report 2022

---

Database coverage:
; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; Essential Science Indicators ; IF >= 10 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

---