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Precise control of the phase-transition temperature of VO2 from 70 to -35 {\deg}C for tunable optics
Jin-Woo Cho, Jonathan L. King, Martin Hafermann, Karla Paz, Shenwei Yin, Tanuj Kumar, Hongyan Mei, Joseph A. Andrade, Dung. T. Quach, Colin Hessel, Chenghao Wan, Carsten Ronning, David Woolf, Mikhail A. Kats
https://arxiv.org/abs…

Precise control of the phase-transition temperature of VO2 from 70 to -35 °C for tunable optics
We demonstrate the combination of metal doping and ion bombardment as a hybrid technique to precisely engineer the insulator-to-metal transition (IMT) properties of vanadium dioxide (VO$_2$) films. This approach enables (i) setting the phase-transition temperature ($T_c$) from $-35$ to $70$ °C, (ii) near-zero hysteresis in highly doped and irradiated films, and (iii) robust optical contrast across a broad range of doping and irradiation conditions, down to $T_c = -35$ °C. While previous work …