Multilayer graphene supported  flexible optoelectronic devices

¹ 1 Institute of Optical Materials and Technologies, Bulgarian Academy of Sciences, Sofia, Bulgaria 2 Department of Electrophysics, National Chiao Tung University, Hsinchu 30010, Taiwan
² Department of Electrophysics, National Chiao Tung University, Hsinchu 30010, Taiwan
³ 1 Institute of Optical Materials and Technologies, Bulgarian Academy of Sciences, Sofia, Bulgaria 2 South-West Univerity “Neofit Rilski” Blagoevgrad, Bulgaria
⁴ South-West Univerity “Neofit Rilski” Blagoevgrad, Bulgaria
⁵ Institute of Solid State Physics, Bulgarian Academy of Sciences, Sofia, Bulgaria, Bulgaria
⁶ Institute of Optical Materials and Technologies, Bulgarian Academy of Sciences, Sofia, Bulgaria
⁷ Department of Photonics, National Chiao Tung University, Hsinchu 30010, Taiwan

Published: 11 November 2020 by MDPI in 2nd International Online-Conference on Nanomaterials session Graphene & 2D Nanomaterials & Soft Nanomaterials

https://doi.org/10.3390/IOCN2020-07900

Abstract:

Here, we demonstrate the synthesis process of large area graphene, grown by Atmospheric Pressure Chemical Vapour Deposition technique and transferred on polyethylene terephthalate PET substrates. Quality assessments were confirmed by Scanning Electron Microscopy (SEM), Raman analysis and optical spectroscopy. Stability of the sheet resistance after 1500 bending tests of graphene /PET is demonstrated. Next, graphene was implemented as transparent conductive electrode in flexible devices: several graphene-based Polymer Dispersed Liquid Crystal (PDLC) devices have been fabricated and their electro-optical properties, such as voltage-dependent transmittance, response time and flexibility were measured and presented by video demonstrations. The obtained results open a great potential of graphene integration into the next generation ITO-free flexible and stretchable optoelectronics.

Keywords: graphene synthesis, characterizations, graphene supported PDLC smart devices

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Comments on this paper

Andreza Lima

18 November 2020

Sheet resistance

Congratulations for your work. I would like to know if this sheet resistance is suitable for applying this multilayer graphene as TCE in flexible solar cells. Is there any action that can decrease the sheet resistance, like a treatment or doping?