ITO/Cu multilayer electrodes for high-brightness electrochromic displays
Xueqing Tang,
Zishou Hu,
Zhen Wang,
Jian Chen,
Xinyang Mu,
Ge Song,
Peiyan Sun,
Zhengji Wen,
Jiaming Hao,
Shan Cong,
Zhigang Zhao
Affiliations
Xueqing Tang
School of Nano-Tech and Nano-Bionics, University of Science and Technology of China, Hefei 230000, China; Key Lab of Nanodevices and Applications, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China
Zishou Hu
School of Nano-Tech and Nano-Bionics, University of Science and Technology of China, Hefei 230000, China
Zhen Wang
Key Lab of Nanodevices and Applications, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China
Jian Chen
School of Nano-Tech and Nano-Bionics, University of Science and Technology of China, Hefei 230000, China; Key Lab of Nanodevices and Applications, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China
Xinyang Mu
Key Lab of Nanodevices and Applications, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China
Ge Song
School of Nano-Tech and Nano-Bionics, University of Science and Technology of China, Hefei 230000, China; Key Lab of Nanodevices and Applications, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China
Peiyan Sun
Key Lab of Nanodevices and Applications, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China
Zhengji Wen
State Key Laboratory of Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China
Jiaming Hao
State Key Laboratory of Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China
Shan Cong
School of Nano-Tech and Nano-Bionics, University of Science and Technology of China, Hefei 230000, China; Key Laboratory of Multifunctional Nanomaterials and Smart Systems, Chinese Academy of Sciences (CAS), Suzhou 215123, China; Division of Nanomaterials, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Nanchang 330200, China
Zhigang Zhao
School of Nano-Tech and Nano-Bionics, University of Science and Technology of China, Hefei 230000, China; Key Lab of Nanodevices and Applications, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China; Division of Nanomaterials, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Nanchang 330200, China; Corresponding author.
Fabry–Perot (F–P) nanocavity-type electrochromic devices with multicolor tunability have attracted significant interest in the past two years for their potential uses in a wide variety of applications, such as electronic display, military camouflage, and dynamic decoration. However, challenges such as insufficient brightness, lengthy switching times, and poor cycling stability have yet to be overcome. Herein, we demonstrate electrochromic electrodes based on ITO/Cu as both the current collector and the reflective layer, with WO3 as the electrochromic material, forming a unique three-layered structure. The constituted WO3/ITO/Cu films present a high brightness value of about 84% before coloration, and a decent brightness value of 48% after coloration at −0.8 V. Moreover, a fast switching time between different coloration states (tc = 2.2 s; tb = 1 s) is recorded, attributed to the extremely low sheet resistivity of the ITO/Cu current collector. The films also reveal excellent electrochemical cycling stability across 2000 cycles.
