Preparation and characterization of HfO2/VO2/HfO2 sandwich structures with low phase transition temperature, excellent thermochromic properties, and superior durability

Highly reproducible and CMOS-compatible VO2-based oscillators for brain-inspired computing

“…The introduction of an HfO 2 interlayer between VO 2 and SiO 2 , as in sample F, results in more uniform growth of VO 2 grains across the entire film thickness, as shown by XRR analysis in Table 1 . This observation is consistent with previous studies 45 , 48 suggesting that HfO 2 can regulate VO 2 crystallinity by promoting the nucleation of grains and reducing boundary defects. Interestingly, in VO 2 films grown on ultrathin (≤ 10 nm) SiO 2 layers on Si substrates, no spurious interfacial layers are detected and the structural properties of the crystallized VO 2 layer compare well with the sample presenting the HfO 2 interlayer.…”

“…The AFM measurements in Fig. 3 j show that the average grain size (38 nm) remains small and the surface, smooth (2.4 nm) in the presence of HfO 2 ; a finding also reported in Zong et al 45 …”

Influence of VO2 based structures and smart coatings on weather resistance for boosting the thermochromic properties of smart window applications

“…Sandwich-like structural adaptions have been tried by using different materials in the thin lm strategy. [126][127][128][129][130][131][132][133][134][135] For example, S. Long and coworkers designed SiN x /VO 2 (SV), VO 2 /SiN x (VS), and SiN x /VO 2 /SiN x (SVS) multilayers as shown in Fig. 8(a).…”

MoO3nanowire growth on VO2/WO3for thermochromic applications

“…Since high T c limits the practical usage of monolayer VO 2 films, T c is reduced by a variety of techniques, including strain engineering, 6 element doping, 7 and multilayer construction. [8][9][10] Monoclinic VO 2 has been synthesized using various fabrication methods, each of which has proven successful in producing high-performance materials, such as chemical vapor deposition (CVD), 11 pulsed laser deposition (PLD), 12 molecular beam epitaxy (MBE), 13 and liquid phase synthesis (LPS). 14 These various methods have each demonstrated remarkable performance characteristics.…”