Figure 3. XPS spectra of (A) Ti 2p, (B) Zn 2p, (C) O 1s, (D) Bi 4f, (E) Te 3d, and (F) Se 3d. XPS: X-ray photoelectron spectroscopy; BTS: Bi2Te3Se0.3; TZ-NL: TiO2/ZnO nanolaminate.
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