A near-infrared photoelectrochromic device with indoor thermal management for self-powered smart windows

Abstract

A photoelectrochromic device (PECD) is a combination of a dye-sensitized solar cell (DSSC) and an electrochromic device (ECD) that directly generate transmittance contrast from solar radiation without an additional power...

“Dark-to-Warm” Smart Windows Enabled by Black-to-Black Electrochromic Copolymers with Minimal Visible and Remarkable NIR Modulation

“…Scheme a illustrates the chemical structure of these polymers, named according to their monomer abbreviations and feed ratio. For instance, the copolymer synthesized with a monomer feed ratio of 3,4-diheptylthiophene (DPTh) and benzo­[c] ,, thiadiazole (Tz) at 5/1 (with the TTT mole number being the sum of other two monomers) is denoted as TTT-DPTh-Tz-51.…”

“…Electrochromic materials, capable of adjusting their optical properties in visible and infrared spectrum with an ultralow external potential, find diverse applications such as smart windows, − nonemissive displays, − and adaptive camouflage. − Conducting polymers, recognized for their advantageous features including facile color tuning through structural control, , high optical contrast, , swift switching response, good stability, and high color efficiency, have become focal points in the electrochromic field. The adoption of the direct arylation polymerization (DArP) method has simplified polymer synthesis, facilitating the kilogram-scale production of high-performance electrochromic conducting polymers (ECPs) and enhancing their industrial applicability .…”

Disordering of L12 Phase in High‐Entropy Alloy Deformed at Cryogenic Temperature

“…Without the formation of DP, Al 3.6 Co 27.3 Cr 18.2 Fe 18.2 Ni 27.3 Ti 5.4 HEAs exhibit outstanding strength and reasonable ductility at room‐ and high‐temperature applications. [ 31 ] Furthermore, Li et al [ 33 ] mentioned that when the dislocation is close to the precipitate, the stress changes significantly due to the strong stress produced by the eigenstrain from the precipitate–matrix interaction. The interaction between the dislocation and precipitate can significantly increase the strength of the alloy.…”

“…In the Al x Co 1.5 CrFeNi 1.5 Ti y HEAs, the optimized Al and Ti content is 0.2 and 0.3 in molar ratios, respectively, which contain only FCC γ/γ′ structure and exhibit good phase stability in room‐to‐high temperatures without any detrimental phases such as β, η, σ, or δ, which are harmful to the mechanical behaviors in high‐temperature applications. Although the Al 0.2 Co 1.5 CrFeNi 1.5 Ti 0.3 (namely Al 3.6 Co 27.3 Cr 18.2 Fe 18.2 Ni 27.3 Ti 5.4 ) HEAs have peak microhardness at 1023 K after 50 h aging, [ 21,27 ] the cellular structures—or discontinuous precipitations (DPs)—were observed in the grain boundary region, which were mainly formed during grain growth in superalloys [ 28–31 ] and could degrade the tensile properties at elevated temperatures. Kuo et al [ 32 ] mentioned that unwanted DP formation can be eliminated utilizing a thermomechanical treatment with furnace cooling (FC), so that all the L1 2 particles are spherical, uniformly precipitated, and coherently embedded in the FCC γ matrix.…”