Stretchable and Hydrophobic Electrochromic Devices Using Wrinkled Graphene and PEDOT:PSS
Joint Authors
Nemani, Srinivasa Kartik
Chen, Dayong
Mohamed, Marwan H.
Sojoudi, Hossein
Source
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-03-22
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
We present an electrochromic device (ECD) fabricated using PEDOT:PSS and graphene as active conductive electrode films and a flexible compliant polyurethane substrate with 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide (EMI-TSFI) additive, as ionic medium.
This device with a docile, elastic intermediate substrate along with a transparency controlled PEDOT:PSS film provides a wide color contrast and fast switching rate.
We harness wrinkling instability of graphene to achieve a hydrophobic nature without compromising transparency of the ECD.
This mechanical self-assembly approach helps in controlling the wavelength of wrinkles generated by inducing measured prestrain conditions and regulating the modulus contrast by selection of underlying materials used, hereby controlling the extent of transparency.
The reduction and oxidation switching times for the device were analyzed to be 5.76 s and 5.34 s for a 90% transmittance change at an operating DC voltage of 15 ± 0.1 V.
Strain dependent studies show that the performance was robust with the device retaining switching contrasts even at 15% uniaxial strain conditions.
Our device also exhibits superior antiwetting properties with an average water contact angle of 110° ± 2° at an induced radial prestrain of 30% in the graphene film.
A wide range color contrast, flexibility, and antiwetting nature of the device envision its uses in smart windows, visors, and other wearable equipment where these functionalities are of outmost importance for developing new generation of smart interactive devices.
American Psychological Association (APA)
Nemani, Srinivasa Kartik& Chen, Dayong& Mohamed, Marwan H.& Sojoudi, Hossein. 2018. Stretchable and Hydrophobic Electrochromic Devices Using Wrinkled Graphene and PEDOT:PSS. Journal of Nanomaterials،Vol. 2018, no. 2018, pp.1-10.
https://search.emarefa.net/detail/BIM-1193991
Modern Language Association (MLA)
Nemani, Srinivasa Kartik…[et al.]. Stretchable and Hydrophobic Electrochromic Devices Using Wrinkled Graphene and PEDOT:PSS. Journal of Nanomaterials No. 2018 (2018), pp.1-10.
https://search.emarefa.net/detail/BIM-1193991
American Medical Association (AMA)
Nemani, Srinivasa Kartik& Chen, Dayong& Mohamed, Marwan H.& Sojoudi, Hossein. Stretchable and Hydrophobic Electrochromic Devices Using Wrinkled Graphene and PEDOT:PSS. Journal of Nanomaterials. 2018. Vol. 2018, no. 2018, pp.1-10.
https://search.emarefa.net/detail/BIM-1193991
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1193991