Facile and Scalable Electrospun Nanofiber-Based Alternative Current Electroluminescence (ACEL) Device

Jayathilaka, W.A.D.M.; Chinnappan, Amutha; Ji, Dongxiao; Ghosh, Rituparna; Tran, Thang Q.; Ramakrishna, Seeram

doi:10.1021/acsaelm.0c00838

Cited by 13 publications

(15 citation statements)

References 43 publications

(48 reference statements)

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“…Unexpected technological approaches often allow one to obtain promising solutions for the development of the new-generation devices in a wide spectrum of applications (for instance, [ 6 , 17 , 18 ]).…”

Section: Discussionmentioning

confidence: 99%

Memristive FG–PVA Structures Fabricated with the Use of High Energy Xe Ion Irradiation

et al. 2022

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A new approach based on the irradiation by heavy high energy ions (Xe ions with 26 and 167 MeV) was used for the creation of graphene quantum dots in the fluorinated matrix and the formation of the memristors in double-layer structures consisting of fluorinated graphene (FG) on polyvinyl alcohol (PVA). As a result, memristive switchings with an ON/OFF current relation ~2–4 orders of magnitude were observed in 2D printed crossbar structures with the active layer consisting of dielectric FG films on PVA after ion irradiation. All used ion energies and fluences (3 × 1010 and 3 × 1011 cm−2) led to the appearance of memristive switchings. Pockets with 103 pulses through each sample were passed for testing, and any changes in the ON/OFF current ratio were not observed. Pulse measurements allowed us to determine the time of crossbar structures opening of about 30–40 ns for the opening voltage of 2.5 V. Thus, the graphene quantum dots created in the fluorinated matrix by the high energy ions are a perspective approach for the development of flexible memristors and signal processing.

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Section: Discussionmentioning

confidence: 99%

Memristive FG–PVA Structures Fabricated with the Use of High Energy Xe Ion Irradiation

et al. 2022

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“…[123] Fortunately, in most of the stretchable ACEL devices, the phosphors powers (diameter ≈20 µm) are buried within a thick elastomer layer (from hundreds of µm to a few millimeters). The phosphor powder and the matrix forming polymer (or its precursor) are dispersed in an organic solvent, and cast to form the thick emissive layer via spin-coating, [124] blade-coating, [125] or lamination [126] to fabricate stretchable ACEL devices. ACEL fibers might be fabricated via repeatedly dip-coating [58c] and coextrusion.…”

Section: Zns Phosphors Elastomer Compositesmentioning

confidence: 99%

Structures and Materials in Stretchable Electroluminescent Devices

Yin

Youssef

et al. 2021

Advanced Materials

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Stretchable electroluminescent (EL) devices are obtained by partitioning a large emission area into areas specifically for stretching and light‐emission (island–bridge structure). Buckled and textile structures are also shown effective to combine the conventional light emitting diode fabrication with elastic substrates for structure‐enabled stretchable EL devices. Meanwhile, intrinsically stretchable EL devices which are characterized with uniform stretchability down to microscopic scale are relatively less developed but promise simpler device structure and higher impact resistance. The challenges in fabricating intrinsically stretchable EL devices with high and robust performance are in many facets, including stretchable conductors, emissive materials, and compatible processes. For the stretchable transparent electrode, ionically conductive gel, conductive polymer coating, and conductor network in surface of elastomer are all proven useful. The stretchable EL materials are currently limited to conjugated polymers, conjugated polymers with surfactants and ionic conductors added to boost stretchability, and phosphor particles embedded in elastomer matrices. These emissive materials operate under different mechanisms, require different electrode materials and fabrication processes, and the corresponding EL devices face distinctive challenges. This review aims to provide a basic understanding of the materials meeting both the mechanical and electronic requirements and important techniques to fabricate the stretchable EL devices.

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“…The emitted light color of the ACEL device can be controlled by the applied voltage, which essentially controls the relative EL intensity of these two layers. The luminescence performance of phosphors based on a zinc sulfide matrix in some recent research has been summarized in Table . ,,,,− …”

Section: Component Materialsmentioning

confidence: 99%

“…In particular, the huge deformability over 100% enables ACEL devices to be completely adapted to the human skin (average tolerable strain ∼75%) . Instead of expensive and complicated material growth methods, ACEL devices can be fabricated by open-air methods like spin-coating, ,, screen printing, ,, 3D printing, direct ink writing, and electrospinning . These advantages greatly expand the applications of ACEL devices, which can be broadly divided into flexible displays and sensing platforms based on recent research.…”

Section: Multifunctional Displays and Sensing Platformsmentioning

confidence: 99%

“…At the same time, some new technologies of ACEL are emerging: Although the input voltage requirements are high, ACEL devices could be self-powered by a high AC output driver like a triboelectric nanogenerator (TENG), − which can easily generate high AC voltage by human movements. The unique color-tunability can further widen the luminous range of ACEL devices. ,, When color-tunable technology is combined with pixelated displays and sensors, the flexible ACEL devices can display colorful patterns and even signal the sensing information by color changes. New materials (such as MXene, ionogels, etc.) and novel fabrication methods (like electrospinning) of ACEL devices are constantly being discovered, which continuously improve the performance of ACEL devices. …”

Section: Conclusion Challenges and Outlookmentioning

confidence: 99%

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Multifunctional Displays and Sensing Platforms for the Future: A Review on Flexible Alternating Current Electroluminescence Devices

Xiao

et al. 2021

ACS Appl. Electron. Mater.

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Alternating current electroluminescence (ACEL) as a unique display technology has been studied for decades. Due to the development of component materials (phosphor, dielectric, electrodes, and substrates), ACEL devices have obtained extreme deformability and high luminescence, as well as other unique properties, enabling ACEL to be suitable for multifunctional displays and sensing platforms. In this era of great demand for wearable electronics and flexible displays, flexible ACEL devices are facing unprecedented development opportunities, and some outstanding research has emerged. This Review first introduces the configurations and mechanisms of flexible ACEL devices and highlights the functions and development of each component material in flexible ACEL devices. In the second part, this Review focuses on the advances and potential of ACEL in the field of multifunctional displays and sensing platforms and shows the bright prospects of flexible ACEL devices.

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Facile and Scalable Electrospun Nanofiber-Based Alternative Current Electroluminescence (ACEL) Device

Cited by 13 publications

References 43 publications

Memristive FG–PVA Structures Fabricated with the Use of High Energy Xe Ion Irradiation

Memristive FG–PVA Structures Fabricated with the Use of High Energy Xe Ion Irradiation

Structures and Materials in Stretchable Electroluminescent Devices

Multifunctional Displays and Sensing Platforms for the Future: A Review on Flexible Alternating Current Electroluminescence Devices

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