期刊
ACS APPLIED ELECTRONIC MATERIALS
卷 2, 期 6, 页码 1768-1773出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsaelm.0c00342
关键词
all-inorganic; electrochromic; prussian blue; cobalt oxide; solid-state device
资金
- Science and Engineering Research Board, Government of India [CRG/2019/000371]
- Council of Scientific and Industrial Research (CSIR) [09/269 1022(0039)/2017-EMR-I]
- IIT Indore, Government of India
- DST, Government of India [DST/INSPIRE/03/2018/000910/IF180398]
- DST [DST/INSPIRE/03/2019/002160]
- UGC, Govt. of India [1304-JUNE-2018-513215]
- Department of Science and Technology (DST), Government of India, under FIST scheme [SR/FST/PSI-225/2016]
An all-inorganic, fast, and power-efficient solid-state electrochromic device has been realized by choosing Co3O4 and PB films as complementing electrodes. The prussian blue and cobalt oxide films have been synthesized via a simple galvanostatic method to achieve better film quality to be used in a device. Prior to fabricating a prototype solid-state device, the electrodes have been tested using in situ electrochemical and spectroscopic studies. This is followed by fabricating a solid-state device that shows switching between multiple colors with an applied bias of less than a couple of volts. A moderate color contrast of similar to 40% with 1.5 s switching time has been observed with showing stability for more than 900 s of continuous switching. A redox-driven electrochromic behavior of individual electrodes makes it possible for the solidstate device to show beautiful colors with a small applied bias. Electrochemical and spectroscopic measurements have been carried out to establish the possible mechanism of color switching shown by the device. Moreover, a coloration efficiency of similar to 250 cm(2)/C makes it comparable to an all-organic or hybrid solid-state device, with its strong nature being an additional advantage.
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