Journal
DYES AND PIGMENTS
Volume 148, Issue -, Pages 465-473Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.dyepig.2017.09.026
Keywords
Electrochromic; WO3; PEDOT:PSS; Inkjet printing; Device; Smart window
Funding
- Ministry of Science and Technology (MOST) of Taiwan [MOST 104-2113-M-152-001-MY2, MOST 105-2320-B-038-014-]
- CPC Corporation
- Taipei Medical University [TMU102-AE1-B02, TMUTOP103004-2]
- MOST of Taiwan [MOST 105-2221-E131-039-, MOST 106-2221-E-131-001-, MOST 106-2622-E-131003-CC2]
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In this study, we have prepared an electrochromic (EC) ink composed of WO3 nanoparticles and poly (3,4-ethylenedioxythiophene):poly (styrene sulfonate) (PEDOT:PSS). The ink formulation can be processed through inkjet-printing or spray coating to deposit high-quality EC layers. The PEDOT:PSS acts as an conductive binder to connect the WO3 nanoparticles leading to reduced impedance and better electrochemical properties. The WO3/PEDOT:PSS (PH1000) exhibits an optical modulation of 54.1%, a response time of 1.1 s, and a coloration efficiency of 83.87 cm(2)/C. A hybrid type electrochromic device (ECD) incorporated with WO3/PEDOT:PSS with excellent durability has been fabricated. The performance of WO3/PEDOT:PSS based ECD for sun shielding property is also evaluated. The ECD can efficiently block the sunlight and reduce solar heat gain. As a result, the indoor temperature can be modulated from 32.7 degrees C (bleached state) to 29.4 degrees C (darken state) under illumination. (C) 2017 Elsevier Ltd. All rights reserved.
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