title: Crystalline/amorphous tungsten oxide core/shell hierarchical structures and their synergistic effect for optical modulation.
abstract: High-performance electrochromic films with large color contrast and fast switching speed are of great importance for developing advanced smart windows. In this work, crystalline/amorphous WO3 core/shell (c-WO3@a-WO3) nanowire arrays rationally are synthesized by combining hydrothermal and electrodeposition methods. The 1D c-WO3@a-WO3 core/shell hierarchical structures show a synergistic effect for the enhancement of optical modulation, especially in the infrared (IR) region. By optimizing the electrodeposition time of 400s, the core/shell array exhibits a significant optical modulation (70.3% at 750nm, 42.0% at 2000nm and 51.4% at 10μm), fast switching speed (3.5s and 4.8s), high coloration efficiency (43.2cm(2)C(-1) at 750nm) and excellent cycling performance (68.5% after 3000 cycles). The crystalline/amorphous nanostructured film can provide an alternative way for developing high-performance electrochromic materials.
authors: State Key Laboratory of Silicon Materials, Key Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Province, and School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China.
authors: D
authors: D
authors: Zhou
authors: State Key Laboratory of Silicon Materials, Key Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Province, and School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China.
authors: D
authors: D
authors: Xie
authors: State Key Laboratory of Silicon Materials, Key Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Province, and School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China.
authors: F
authors: F
authors: Shi
authors: State Key Laboratory of Silicon Materials, Key Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Province, and School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China.
authors: D H
authors: DH
authors: Wang
authors: State Key Laboratory of Silicon Materials, Key Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Province, and School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China.
authors: X
authors: X
authors: Ge
authors: State Key Laboratory of Silicon Materials, Key Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Province, and School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China; Cyrus Tang Center for Sensor Materials and Applications, Zhejiang University, Hangzhou 310027, China.
authors: X H
authors: XH
authors: Xia
authors: State Key Laboratory of Silicon Materials, Key Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Province, and School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China; Cyrus Tang Center for Sensor Materials and Applications, Zhejiang University, Hangzhou 310027, China.
authors: X L
authors: XL
authors: Wang
authors: State Key Laboratory of Silicon Materials, Key Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Province, and School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China; Cyrus Tang Center for Sensor Materials and Applications, Zhejiang University, Hangzhou 310027, China.
authors: C D
authors: CD
authors: Gu
authors: State Key Laboratory of Silicon Materials, Key Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Province, and School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China; Cyrus Tang Center for Sensor Materials and Applications, Zhejiang University, Hangzhou 310027, China. Electronic address: tujp@zju.edu.cn.
authors: J P
authors: JP
authors: Tu
keywords: Amorphous layer; Core/shell structure; Crystalline nanowire; Electrochromism; Tungsten trioxide