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@ARTICLE{Wu:904946,
      author       = {Wu, Ming and Jiang, Zhizheng and Lou, Xiaojie and Zhang,
                      Fan and Song, Dongsheng and Ning, Shoucong and Guo, Mengyao
                      and Pennycook, Stephen J. and Dai, Ji-yan and Wen, Zheng},
      title        = {{F}lexoelectric {T}hin-{F}ilm {P}hotodetectors},
      journal      = {Nano letters},
      volume       = {21},
      number       = {7},
      issn         = {1530-6984},
      address      = {Washington, DC},
      publisher    = {ACS Publ.},
      reportid     = {FZJ-2022-00260},
      pages        = {2946 - 2952},
      year         = {2021},
      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.},
      cin          = {ER-C-1},
      ddc          = {660},
      cid          = {I:(DE-Juel1)ER-C-1-20170209},
      pnm          = {5351 - Platform for Correlative, In Situ and Operando
                      Characterization (POF4-535)},
      pid          = {G:(DE-HGF)POF4-5351},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:33759536},
      UT           = {WOS:000641160500034},
      doi          = {10.1021/acs.nanolett.1c00055},
      url          = {https://juser.fz-juelich.de/record/904946},
}