Hydrothermal synthesis and piezoelectricity of p-SnO nanoparticle/n-ZnSnO3 nanorod array heterojunction films

Jung Hsuan Liu, Thi Nghi Nhan Nguyen, Kao Shuo Chang

研究成果: Article同行評審

1 引文 斯高帕斯(Scopus)

摘要

We investigated the hydrothermal fabrication of n-ZnSnO3 nanorod array films decorated with various ratios of p-SnO nanoparticles on fluorine-doped tin oxide substrates and their synergistic piezoelectricity-induced applications. We used Mott–Schottky measurements and an energy band diagram to determine the materials’ conductivity type. The associated current–voltage characteristics and charge transport behavior were elucidated by investigating Schottky barriers, Schottky emissions, tunneling, depletion regions, and piezopotential-induced energy band bending. The piezoelectric coefficients (d33) of the ZnSnO3 nanorod array and the Composite II film were measured to be approximately 15.4 and 17.3 p.m.·V−1, respectively. Theoretical simulation of piezopotential distributions revealed that compressive deformation was predominant for samples under stress. The Composite II film exhibited reliable piezophotodegradation activity for rhodamine B (RhB) solutions, with a degradation rate constant of approximately 1.2 × 10−2 min−1 under visible-light irradiation, approximately 2.5 times that of the individual ZnSnO3 film, partially due to intimate contact between the two constitutive components, high electrochemical surface areas, and facilitated charge carrier transport resulting from piezopotential-induced energy band bending. This study revealed the positive effect of piezoelectricity on photodegradation and established a paradigm to allow wide-bandgap materials to function in the visible-light range through a p–n junction.

原文English
頁(從 - 到)26950-26961
頁數12
期刊Ceramics International
49
發行號16
DOIs
出版狀態Published - 2023 8月 15

All Science Journal Classification (ASJC) codes

  • 電子、光磁材料
  • 陶瓷和複合材料
  • 製程化學與技術
  • 表面、塗料和薄膜
  • 材料化學

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