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Room-Temperature Ferroelectric Epitaxial Nanowire Arrays with Photoluminescence.
Le, Han K D; Zhang, Ye; Behera, Piush; Vailionis, Arturas; Phang, Amelyn; Brinn, Rafaela M; Yang, Peidong.
Afiliación
  • Le HKD; Department of Chemistry, University of California, Berkeley, California 94720, United States.
  • Zhang Y; Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States.
  • Behera P; Department of Chemistry, University of California, Berkeley, California 94720, United States.
  • Vailionis A; Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States.
  • Phang A; Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States.
  • Brinn RM; Department of Materials Science and Engineering, University of California, Berkeley, California 94720, United States.
  • Yang P; Stanford Nano Shared Facilities, Stanford University, Stanford, California 94305, United States.
Nano Lett ; 24(17): 5189-5196, 2024 May 01.
Article en En | MEDLINE | ID: mdl-38636084
ABSTRACT
The development of large-scale, high-quality ferroelectric semiconductor nanowire arrays with interesting light-emitting properties can address limitations in traditional wide-bandgap ferroelectrics, thus serving as building blocks for innovative device architectures and next-generation high-density optoelectronics. Here, we investigate the optical properties of ferroelectric CsGeX3 (X = Br, I) halide perovskite nanowires that are epitaxially grown on muscovite mica substrates by vapor phase deposition. Detailed structural characterizations reveal an incommensurate heteroepitaxial relationship with the mica substrate. Furthermore, photoluminescence that can be tuned from yellow-green to red emissions by varying the halide composition demonstrates that these nanowire networks can serve as platforms for future optoelectronic applications. In addition, the room-temperature ferroelectricity and ferroelectric domain structures of these nanowires are characterized using second harmonic generation (SHG) polarimetry. The combination of room-temperature ferroelectricity with photoluminescence in these nanowire arrays unlocks new avenues for the design of novel multifunctional materials.
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Texto completo: 1 Colección: 01-internacional Banco de datos: MEDLINE Idioma: En Revista: Nano Lett Año: 2024 Tipo del documento: Article País de afiliación: Estados Unidos

Texto completo: 1 Colección: 01-internacional Banco de datos: MEDLINE Idioma: En Revista: Nano Lett Año: 2024 Tipo del documento: Article País de afiliación: Estados Unidos