Strain dependence of dissociative adsorption of H2O on epitaxially strained, out-of-plane polarized, BaTiO3(001) thin films

THIN SOLID FILMS

卷:717

Article

Wang, J. L.^1,2  She, S. J.¹  Gaillard, F.³  Niu, G.^4,5  Vilquin, B.⁶  Barrett, N.⁷ 

[1] Donghua Univ, Coll Sci, Shanghai 201620, Peoples R China

[2] Donghua Univ, Shanghai Inst Intelligent Elect & Syst, Shanghai 201620, Peoples R China

[3] Univ Claude Bernard Lyon 1, Univ Lyon, CNRS, IRCELYON,UMR 5256, F-69626 Villeurbanne, France

[4] Xi An Jiao Tong Univ, Minist Educ, Key Lab, Elect Mat Res Lab, Xian 710049, Peoples R China

[5] Xi An Jiao Tong Univ, Int Ctr Dielectr Res, Sch Elect & Informat Engn, Xian 710049, Peoples R China

[6] Univ Lyon, Ecole Cent Lyon, Inst Nanotechnol Lyon, F-69134 Ecully, France

[7] Univ Paris Saclay, CNRS, CEA, SPEC, F-91191 Gif Sur Yvette, France

关键词: Barium titanate;    Water vapor adsorption;    Thin films;    X-ray photoelectron spectroscopy;    Temperature programmed desorption;   

DOI  :  10.1016/j.tsf.2020.138428

来源: Elsevier

【 摘 要 】

The strain dependence of the apparent activation energy of desorption of H2O on epitaxial, TiO2-terminated, out-of-plane polarized, BaTiO3(100) thin films has been investigated using X-ray diffraction, X-ray photoelectron spectroscopy and temperature-programmed desorption. The apparent activation energy of desorption increases significantly with the in-plane strain, suggesting that the strain-induced ferroelectric distortion determines the strength of the chemical bond between the dissociatively adsorbed water and the surface.

【 授权许可】

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