Electrically tunable liquid crystal terahertz phase shifter driven by transparent polymer electrodes

The use of DMSO-doped-poly (3,4-ethylenedioxythiophene):poly (4-styrenesulfonate) (PEDOT:PSS) thin films produced by spin coating as transparent electrodes for a liquid crystal terahertz (THz) phase shifter is reported. The transmittance of these newly proposed transparent electrodes is as high as ∼...

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Bibliographic Details
Published in:Journal of materials chemistry. C, Materials for optical and electronic devices Materials for optical and electronic devices, 2016-01, Vol.4 (19), p.4138-4142
Main Authors: Du, Yan, Tian, Hao, Cui, Xuan, Wang, Hao, Zhou, Zhong-Xiang
Format: Article
Language:English
Subjects:
Controllability
Electric potential
Electrodes
Liquid crystals
Phase shifters
Thin films
Transmittance
Voltage
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Summary:The use of DMSO-doped-poly (3,4-ethylenedioxythiophene):poly (4-styrenesulfonate) (PEDOT:PSS) thin films produced by spin coating as transparent electrodes for a liquid crystal terahertz (THz) phase shifter is reported. The transmittance of these newly proposed transparent electrodes is as high as ∼90%. The phase shifter provides continuous tunability, full electrical controllability, and low-voltage operation at THz frequencies. A maximum phase shift of 129.4° at 1.17 THz is achieved in a 500 μm-thick cell when the driving voltage is as low as 6.7 V (rms). A high performance liquid crystal terahertz phase shifter based on transparent polymer electrodes.
ISSN:2050-7526
2050-7534
DOI:10.1039/c6tc00842a