Recent advances in flexible alternating current electroluminescent
          devices

Zhang, Xin; Wang, Feng

doi:10.1063/5.0040109

Cited by 43 publications

(18 citation statements)

References 91 publications

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“…Under the electric field, the charge carriers in the ZnS phosphor crystal are accelerated and impact the crystal lattice, generating electron-hole pairs in the activation center, according to the principle of the hotelectron excitation. [18] When the electron-hole pairs recombine, the crystal emits characteristic light according to the different doping elements. [19] The ZnS phosphors sandwiched between the electrode plates of the capacitor are insulated from each other by the polymer binder.…”

Section: Structures and Preparation Methods Of The Lm-eldsmentioning

confidence: 99%

Liquid Metal Printed Optoelectronics Toward Fast Fabrication of Customized and Erasable Patterned Displays

Zhou

Yao

Zhang

et al. 2021

Adv Materials Technologies

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Display devices show great application prospects in various fields. Among them, the flexible display which can quickly produce customizable patterns has attracted the attention of researchers. In this study, two types of electroluminescent devices, which introduce liquid metal printed patterns as the electrodes for electrical input, are proposed, theoretically analyzed, and experimentally characterized. One type is to stack the liquid metal electrode, the emissive layer and the transparent electrode in a sandwich configuration. The other is to construct two patterned liquid metal electrodes on one side of the emissive layer and then emit light from the edge of the liquid metal patterns. Compared with the traditional materials, the liquid metal can be quickly patterned so that the obtained liquid metal electroluminescent devices can display customized and erasable luminous patterns. This new display device is easy to access in virtue of various liquid metal printed methods. For practical illustrations, a wristband for monitoring human body temperature and a programmable 8 × 8 pixels flexible screen with double layer liquid metal printed circuits are further designed and demonstrated. This study opens the door to quickly fabricate personalized displays in low quantities based on liquid metal and shows significant potential in flexible electronics.

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Section: Structures and Preparation Methods Of The Lm-eldsmentioning

confidence: 99%

Liquid Metal Printed Optoelectronics Toward Fast Fabrication of Customized and Erasable Patterned Displays

Zhou

Yao

Zhang

et al. 2021

Adv Materials Technologies

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“…The amplitude and frequency composition of an electric field becomes more complex accompanied by the introduction of a large number of power electronic devices [3]. Traditional sensors are prone to resonance and need a carrier light source [4,5], while the sensors based on the electroluminescence effect have the advantages of excellent electrical insulation performance and distributed measurement [6][7][8]. Electroluminescence refers to a solid luminescence phenomenon, in which composites convert the electric energy into optical energy [9,10].…”

Section: Introductionmentioning

confidence: 99%

Optimising the electroluminescence performance of ZnS: Cu/epoxy composites via exploring the relationship between electroluminescence intensity and filler intrinsic attributes

Liu

Chen

et al. 2022

High Voltage

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Electroluminescent composites have considerable potential for applications in photoelectric display, electric field measurement and other fields due to their advantages of simple preparation and uniform luminescence. However, high voltage required by the operation of electroluminescent composites hinders their applications in the electric domain, and research on the relationship between electroluminescence principle of composites and filler intrinsic attributes is insufficient. In this paper, the effects of electric field strength, filler mass fraction and voltage frequency on the electroluminescence intensity of ZnS: Cu/epoxy composites are studied, which are majorly used as the luminescent layer of electroluminescent devices. To enhance the electroluminescence intensity of composites, high-temperature sintered BaTiO 3 and zinc oxide whiskers (ZnOw) particles are introduced in the base matrix. The finite element method is applied to verify that the matrix of high dielectric constant is in favour of improving the electroluminescence intensity of composites. The band structure of the ZnS: Cu particle is calculated based on the density functional theory + U method to analyse the intrinsic relationship between electroluminescence and particle electronic structure. This paper provides a basis for the research of high electroluminescence intensity devices and will be conducive to better understanding on the relationship between electroluminescence principle and filler intrinsic attributes.

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“…Although several reviews about ACEL have been reported before, − most of them do not focus on flexible ACEL devices, and the display and sensing potential of flexible ACEL devices has barely been addressed. This Review presents a comprehensive and systematic presentation of flexible ACEL devices.…”

Section: Introductionmentioning

confidence: 99%

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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Recent advances in flexible alternating current electroluminescent devices

Cited by 43 publications

References 91 publications

Liquid Metal Printed Optoelectronics Toward Fast Fabrication of Customized and Erasable Patterned Displays

Liquid Metal Printed Optoelectronics Toward Fast Fabrication of Customized and Erasable Patterned Displays

Optimising the electroluminescence performance of ZnS: Cu/epoxy composites via exploring the relationship between electroluminescence intensity and filler intrinsic attributes

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

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