Atomic Layer Deposition of V1-xMoxO2 Thin Films, Largely Enhanced Luminous Transmittance, Solar Modulation

V1-xMoxO2 thin films were fabricated by nanolamination of VO2/MoO3 alternating layers using atomic layer deposition (ALD) process, in which tetrakis-dimethyl-amino vanadium(IV) [V(NMe2)4] and molybdenum hexacarbonyl(VI) [Mo(CO)6] were used as vanadium and molybdenum precursors, respectively. The dop...

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Veröffentlicht in:ACS applied materials & interfaces 2018-02, Vol.10 (7), p.6601-6607
Hauptverfasser: Lv, Xinrui, Cao, Yunzhen, Yan, Lu, Li, Ying, Zhang, Yuzhi, Song, Lixin
Format: Artikel
Sprache:eng
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Zusammenfassung:V1-xMoxO2 thin films were fabricated by nanolamination of VO2/MoO3 alternating layers using atomic layer deposition (ALD) process, in which tetrakis-dimethyl-amino vanadium(IV) [V(NMe2)4] and molybdenum hexacarbonyl(VI) [Mo(CO)6] were used as vanadium and molybdenum precursors, respectively. The dopant content of V1-xMoxO2 films was controlled by adjusting MoO3 cycle percentage (PMo) in ALD pulse sequence, which varied from 2 to 10%. Effects of PMo on V1-xMoxO2 crystal structure, morphology, semiconductor-to-metal transition properties, and optical transmittance were studied. A linear reduction of phase transition temperature (Tc) by approximately -11 °C/cycle % Mo was observed for V1-xMoxO2 films within PMo ≤ 5%. Notably, dramatic enhanced luminous transmittance (Tlum = 63.8%) and solar modulation (ΔTsol = 23.5%) were observed for V1-xMoxO2 film with PMo = 7%.
ISSN:1944-8252
DOI:10.1021/acsami.7b16479