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Liang Liu, Tao Yao, Xiaogang Tan, Qinghua Liu, Zhiqiang Wang, Dacheng Shen, Zhihu Sun, Shiqiang Wei and Yi Xie Room-Temperature Intercalation–Deintercalation Strategy Towards VO2(B) Single Layers with Atomic Thickness Small 8

Article first published online: 22 AUG 2012 | DOI: 10.1002/smll.201201552

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Exfoliation of layered bulk VO2(B) with strong covalent bonding by a convenient room-temperature intercalation-deintercalation strategy is proposed to obtain ultrathin sheets with atomic thickness of ∼0.62 nm. This VO2(B) single layer possesses a more symmetric atomic structure with slight lattice expansion that widens the band gap Energy by ΔEg = 0.19 eV, providing more possibilities for energy-level engineering in photovoltaics.

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