Epitaxial growth of bronze phase titanium dioxide by molecular beam epitaxy

W. Guo, D. X. Ji, Z. S. Yuan, P. Wang, Y. F. Nie, Z. B. Gu, X. Q. Pan

Research output: Journal article publicationJournal articleAcademic researchpeer-review

1 Citation (Scopus)

Abstract

Bronze phase titanium dioxide (TiO2-B) has an ideal open structure for applications in high-rate lithium-ion batteries, but high quality and water-free TiO2-B is difficult to synthesize since TiO2-B is energetically less stable compared to other TiO2 polymorphs. Using CaTi5O11 as a template layer can help stabilize TiO2-B phase, but it is still challenging to avoid the formation of TiO2 anatase (TiO2-A) impurity phase. Here we show the synthesis of phase pure TiO2-B films by in situ engineering of the surface quality of the buffer layer using molecular beam epitaxy (MBE). By applying surface sensitive in situ reflection high-energy electron diffraction (RHEED), the formation of the impurity TiO2 anatase phase on the surface of CaTi5O11 buffer layer can be monitored and eliminated in real time, leaving a clean template surface for the growth of phase pure TiO2-B films.

Original languageEnglish
Article number035230
JournalAIP Advances
Volume9
Issue number3
DOIs
Publication statusPublished - 18 Mar 2019
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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