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High reflectance tunable multi-color electrochromic films based on Fabry-Perot cavity

文献类型： 外文期刊

作者： Zheng, Luyi 1 ; Zhang, Shiyu 1 ; Yao, Qi 2 ; Lin, Kai 4 ; Rao, Aiguo 1 ; Niu, Chunhui 1 ; Yang, Mingqing 1 ; Wang, Lei 1 ; Lv, Yong 1 ;

作者机构： 1.Beijing Informat Sci & Technol Univ, Sch Instrument Sci & Opto Elect Engn, Beijing 100192, Peoples R China

2.BOE Technol Grp Co Ltd, Beijing 100176, Peoples R China

3.Beijing Inst Technol, Sch Opt & Photon, Beijing 100081, Peoples R China

4.Beijing Acad Agr & Forestry Sci, Fisheries Sci Inst, Beijing 100068, Peoples R China

关键词： Electrochromic; Fabry-Perot cavity; WO3; Color reflective display

期刊名称：CERAMICS INTERNATIONAL （ 影响因子：5.2； 五年影响因子：4.5 ）

ISSN： 0272-8842

年卷期： 2023 年 49 卷 9 期

页码：

收录情况： SCI

摘要： Currently, the difficulty of electrochromic use for full-color reflective display includes the color rendering range expansion and reflectance enhancement. The Fabry-Perot resonant cavity structure consisting of a broadband absorption layer allows high reflectivity spectral selection. It can actively modulate the optical response to a certain extent by implementing electrochemical control of the resonant cavity nanostructure. WO3 electro-chromic layer was used as the dielectric layer of the broadband absorbing Fabry-Perot cavity, the transition metal Cr as the broadband absorbing layer material, and the inactive metal Al as the metal reflecting layer. The feasibility of the Al/WO3/Cr structure was analyzed theoretically, and the reflection spectrum of the designed electrochromic reflection display film was further investigated. The spectral colors of red, orange, yellow, green, blue, and violet can be obtained by adjusting the thickness of tungsten oxide. Moreover, the dynamic color control of the electrochromic device is achieved by electrically modulating the optical constants (n, k) of the WO3 film layer. The electrochromic device has the advantages of high brightness, high saturation, low cost, and low power consumption, providing a new option for designing full-color reflective displays in the future.

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