Influence of oxygen vacancies (VO’s) on electronic structures and field emission properties of TiO2 nanotubes (NTs) is investigated by first-principle calculations. It is demonstrated that the formation of 3-fold coordinated VO gives rise to two shallow donor states below the conduction band minim ... [Appl. Phys. Lett. 103, 023111 (2013)] published Thu Jul 11, 2013.
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