Optimized properties of innovative ElectroChromic Device using ITO / Ag / ITO electrodes

Abstract

The "Oielectric/Metal/Oielectric" (OMO) stacked films being used as transparent and conductive (TC) electrodes, have demonstrated excellent application in the ElectroChromic (EC) process and devices. In this work, multilayers (IAI) made of 50 nm of Indium Tin Oxide (IT0)/5 nm of metallic sil ver (Ag)/30 nm of ITO that exhibit band gap, low resistance of 7.4 Q and the high figure of merit of 9.9 x 10 3 Q 1 were introduced in a complete five layer Glass/IAI/NiOx/LlCIO4 PC PMMA/WO3/IAI/Glass ElectroChromic De vice (ECO). The single IAI electrode as well as the two actives EC layers Glass/IAI/Niûx and Glass/IAI{WO 3 were firstly characterized for their TC and EC properties respectively. Then, the EC properties of the complete five layer ECO were analyzed. Fast response time (2.02 s for the bleaching and 225 s for complete coloration), wide optical modulation in the visible light region (-55% at 550 nm), long lifetime (more than 6000 s), large capacity and good stability as well as high coloration efficiency (31.7 cm 2 C 1) were obtained The improved EC performance of ECO were related to the good electrical and optical properties of IAI electrode.

Tailored ZnS/Ag/TiOx transparent and conductive electrode for organic solar cells

“…The opto-electrical performances of our electrodes are at the-state-of-the-art of this ETC field [26]. With a fairly large merit figure comparable to literature values [23,[27][28][29], such transparent, conductive three-layer electrodes are good candidates for use as indium-free electrode in organic solar cells.…”

2D MoO3 Nanosheets Synthesized by Exfoliation and Oxidation of MoS2 for High Contrast and Fast Response Time Electrochromic Devices

“…The resulting device shows clear optical transmittance change between the bleached (transparent) and colored (dark blue) states of the MoO 3 nanosheet device as shown in the photographic images of Figure 1d. This design allows for simple and repeatable testing using readily available materials, but further optimization of the electrode 22 or electrolyte 23 could be used to achieve even higher performance in future works. The transition between MoS 2 and MoO 3 can be confirmed in the characterization data in Figure 2.…”

Low-Temperature Deposition of Transparent Conducting Films Applied to Flexible Electrochromic Devices

“…Figure 7 shows CA curves with varying potential from −1.3 V to 0.3 V for 30 s and the corresponding in situ transmittance response of IZTO-based ECD and ITO-based ECD at a fixed wavelength of 633 nm. Furthermore, the switching response times of the coloration and bleaching states are defined as reaching 90% of the full transmittance modulation investigated in detail in Table 4 [ 33 ]. In this study, IZTO-based ECD and ITO-based ECDs were calculated as a t c of 21.01 s and 20.13 s, and as t b of 4.7 s and 22.32 s, respectively.…”

“…In this study, IZTO-based ECD and ITO-based ECDs were calculated as a t c of 21.01 s and 20.13 s, and as t b of 4.7 s and 22.32 s, respectively. In general, the bleached response time presented faster coloration kinetics than coloration due to the lower conductivities of the bleached-state forms than those of the colored-state forms [ 33 ]. The bleaching time is determined by the dispersion coefficient of ions and the length of dispersing channels [ 34 , 35 ].…”