Phase Change Materials (2022)

Bidirectional Tuning of Phase Transition Properties in Pt:VO2 Nanocomposite Thin Films

He, Z.; Jian, J.; Misra, S.; Gao, X.; Wang, X.; Qi, Z.; Yang, B.; Zhang, D.; Zhang, X.; Wang, H. Bidirectional Tuning of Phase Transition Properties in Pt : VO2 Nanocomposite Thin Films. Nanoscale 2020, 12 (34), 17886–17894. https://doi.org/10.1039/d0nr04008h.

Highlights:

  • Bidirectional transition temperature tuning via single metal selection.

  • Size-dependent work function of Pt nanoparticles

  • The change of the Pt: VO2 phase boundary density.

Broad Range Tuning of Phase Transition Property in VO2 Through Metal‐Ceramic Nanocomposite Design

Jian, J.; Wang, X.; Misra, S.; Sun, X.; Qi, Z.; Gao, X.; Sun, J.; Donohue, A.; Lin, D. G.; Pol, V.; Youngblood, J.; Wang, H.; Li, L.; Huang, J.; Wang, H. Broad Range Tuning of Phase Transition Property in VO2 through Metal‐ceramic Nanocomposite Design. Adv. Funct. Mater. 2019, 29 (36), 1903690. https://doi.org/10.1002/adfm.201903690.

Highlights:

  • A very broad range of SMT temperature tuning from 323.5 to 366.7 K.

  • The band structure reconstruction at the metal-VO2 phase boundaries.

  • Maintain high film quality and phase transition properties.

Continuous Tuning of Phase Transition Temperature in VO2 Thin Films on c-Cut Sapphire Substrates via Strain Variation

Jian, J.; Wang, X.; Li, L.; Fan, M.; Zhang, W.; Huang, J.; Qi, Z.; Wang, H. Continuous Tuning of Phase Transition Temperature in VO2 Thin Films on C-Cut Sapphire Substrates via Strain Variation. ACS Appl. Mater. Interfaces 2017, 9 (6), 5319–5327. https://doi.org/10.1021/acsami.6b13217.

Highlights:

  • The semiconductor-to-metal transition (SMT) properties are tuned by the VO2 thickness and the VO2/AZO interface roughness.

  • Strain tuning induced by AZO buffer provides an effective approach for tuning transition temperature (Tc) of VO2.