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A newly-designed self-powered electrochromic window

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  • Special Topic · Electrochromics
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Abstract

By converting incident light into electric power, self-powered electrochromic window (SP-ECW) can achieve color change in electrochromic layer with no need for external voltage. In this work, a newly-designed SP-ECW is proposed for altering its color between deep blue and colorless state according to on/off state of incident light. The device consists of a working electrode with planar integration of photovoltaic (PV) and electrochromic (EC) elements on one electrode, a platinum counter electrode and a redox electrolyte comprising Br–/Br –3 couple. A high transmittance modulation of 41% at 582 nm is obtained. Electrical energy converted from light is not only sufficient to drive the device, but also can be outputted to the external circuit.

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Acknowledgments

This work was supported by the National Natural Science Foundation of China (21274138, 21273207, 21474096) and the Chinese Academy of Sciences (Integrated system of high efficiency building energy saving and its application, KFZD-SW-403).

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Authors and Affiliations

  1. Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, 230026, China

    Xingming Wu, Jianming Zheng & Chunye Xu

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  1. Xingming Wu
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  2. Jianming Zheng
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  3. Chunye Xu
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Correspondence to Chunye Xu.

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Wu, X., Zheng, J. & Xu, C. A newly-designed self-powered electrochromic window. Sci. China Chem. 60, 84–89 (2017). https://doi.org/10.1007/s11426-016-0286-8

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  • DOI: https://doi.org/10.1007/s11426-016-0286-8

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