High thermochromic performance of Fe/Mg co-doped VO₂ thin films for smart window applications

Abstract

A new method, Fe/Mg co-doping, is proposed for the first time to optimize thermochromic VO2 and the promising performance of VO2-based smart windows for practical applications is successfully achieved.

The Cs2AgRhCl6 Halide Double Perovskite: A Dynamically Stable Lead-Free Transition-Metal Driven Semiconducting Material for Optoelectronics

“…The computed absorption coefficient curves of A 2 AgRhCl 6 show an onset around 1.1 and 1.3 eV; these are consistent with the SCF bandgaps predicted with SCAN-rVV10 ( Table S2). The Tauc plot, Figure 5B, provides similar insight, since it is often used to extract the bandgaps from experimental absorption spectra (Eom et al, 2017;Tang et al, 2017;Habibi and Eslamian, 2018;Ji et al, 2018). The peak feature in the visible region with an appreciable absorption coefficient is a strong indication that A 2 AgRhCl 6 are potential candidates for possible optoelectronic applications.…”

Oxidation of sputter-deposited vanadium nitride as a new precursor to achieve thermochromic VO2 thin films

“…At low temperature, VO2 behaves as a semiconductor with a monoclinic structure, high transmittance in the infrared region and high electrical resistivity, while at temperatures higher than Tc a transition to a metallic tetragonal rutile structure occurs and VO2 exhibits low transmittance and low electrical resistivity. The change of these properties during the phase transition of VO2 makes this material convenient for several applications, such as infrared modulation in smart windows [2][3][4][5][6][7][8], thermal solar collectors [9,10], dynamic thermal control of spacecraft [11][12][13], ultrafast electronic devices [14,15] and many others. Although the research on this material has been carried on for several decades, the synthesis of VO2 films with good thermochromic properties on large surfaces still remains a challenge.…”

3D Printed Smart Windows for Adaptive Solar Modulations

“…[ 12–14 ] Nevertheless, due to its intrinsic physical properties, the application of VO 2 on energy‐saving smart window still faces one major challenge which is to reduce τ c while maintaining both high luminous transmission ( T lum ) and the solar modulation ability (Δ T sol ) simultaneously. [ 15 ] Various approaches have been applied to address this issue including but not limited to doping, [ 16–20 ] antireflection coating, [ 21–23 ] biomimetic structuring, [ 24–26 ] compositing, [ 27–31 ] photonic structuring, [ 32,33 ] kirigami‐inspired structuring. [ 34 ] However, the usual trade‐off relationship between these three major index τ c , Δ T sol , and T lum is often observed, especially for doping techniques.…”

“…[ 34 ] However, the usual trade‐off relationship between these three major index τ c , Δ T sol , and T lum is often observed, especially for doping techniques. [ 16–20 ]…”