A brief review of innovative strategies towards structure design of practical electronic display device

Ma, Lingling; Shao, Yufeng

doi:10.1007/s11771-020-4395-x

Cited by 11 publications

(7 citation statements)

References 120 publications

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“…Microdisplay based on an array of micro-sized GaN-based light emitting diode (Micro-LED) has high application prospects [1][2][3]. Compared with traditional liquid crystal display and organic light emitting display [4,5], it has the advantages of high efficiency, low power consumption, ultra-high resolution, ultra-fast response speed, and wide viewing angle. However, there are still many problems to be solved in the development of Micro-LED, such as the 'size effect' caused by sidewall damage [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Optical and microstructural characterization of Micro-LED with sidewall treatment

Yang¹,

Xu²,

Li³

et al. 2022

J. Phys. D: Appl. Phys.

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The traditional influence on the sidewall damage of Micro-LED was mostly focused on the research of I-V-L. In this paper, we discussed the influence of Micro-LED sidewall damage from the perspective of optical and microstructural characterization. Scanning electron microscopy (SEM) showed that the Micro-LED structure with smaller size was more irregular after inductively coupled plasma (ICP) etching. High-resolution transmission electron microscopy (HRTEM) and energy dispersive X-ray (EDX) spectroscopy analysis showed that the area of the upper and lower regions of the quantum well was inconsistent, there was about 2 nm lattice disorder on the surface of the sidewall of the MESA, and oxygen and silicon impurity atoms were enriched. For optical characterization, a method combining laser scanning confocal microscopy (LSCM) and photoluminescence (PL) was proposed to evaluate the optical performance of the MESA. The results showed that the luminescence of Micro-LED MESA was uneven, the luminous intensity at the edge of the MESA was reduced by more than 65%, and the luminous wavelength was shifted by several nanometers. Finally, we optimized the sidewall treatment process, effectively improved the performance of Micro-LED devices by combining tetramethylammonium hydroxide (TMAH) treatment and SiO2 passivation, and increased the luminous intensity of Micro-LED 2 μm away from the edge by about 4.7 times and PL uniformity was greatly improved. These results provided an available reference for the development of Micro-LED.

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Section: Introductionmentioning

confidence: 99%

Optical and microstructural characterization of Micro-LED with sidewall treatment

Yang¹,

Xu²,

Li³

et al. 2022

J. Phys. D: Appl. Phys.

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“…Despite fundamental scientific research, investigation of the relationship between the ferroelectricity and ferroelasticity of MHPs is also helpful for the development of opto/electric devices with improved performance. [ 170 ] The tunability of MHP‐based devices through strain engineering may improve device stability in extremely variable environments, such as railway transportation and aerospace. The power conversion efficiency may be improved by increasing the volume fraction of the ferroelectric/ferroelastic domain walls by suitable strain engineering.…”

Section: Discussionmentioning

confidence: 99%

Ferroelasticity Mediated Energy Conversion in Strained Perovskite Films

Jiao

Qin

et al. 2022

Adv Elect Materials

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Metal halide perovskites (MHPs) have been shown to be key materials for next‐generation photovoltaic energy harvesting, electro‐optic detection, and all‐optical conversion. Room‐temperature tetragonal MAPbI3 has been reported to possess two space groups: polar I4cm and non‐polar I4/mcm. Although the space group of MAPbI3 is still under debate, significant effort has been expended to prove that I4cm MHPs are ferroelectric and I4/mcm MHPs are antiferroelectric. Both structures belong to the ferroelastic point group, and there has been debate regarding whether the domain structures observed on MHPs are ferroelectric or ferroelastic. The relationship between the ferroelectricity and ferroelasticity of MHPs has been discussed, whereas these two properties sometimes are regarded as mutually exclusive in MHPs. In this work, the ferroelectricity and ferroelasticity of MHPs originating from structural symmetry have been reviewed, and the interrelationship between the ferroelectricity and ferroelasticity of MHPs are discussed.

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“…OLED is made of an emissive layer (EML) sandwiched between two conductors. A hole transport layer (HTL), hole injection layer (HIL), electron transport (ETL), and electron injection layer (EIL) can be added to enhance its efficiency [182]. Fig.…”

Section: Display Technology Has a Ubiquitous Effect In Daily Lifementioning

confidence: 99%

Classifications and Applications of Inkjet Printing Technology: A Review

et al. 2021

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Inkjet printing technology uses the low-cost direct deposition manufacturing technique for printing and is applicable in various fields including optics, ceramics, three-dimensional printing in biomedicine, and conductive circuitry. This study reviews the classifications and applications of inkjet printing technologies, with a focus on recent publications. The different design approaches, applications, and research progress of several inkjet printing techniques are reviewed. Among them, the piezoelectric inkjet printing technology is the main focus owing to its reliability and handling of a diverse range of inks. A piezo-driven inkjet printhead is activated by applying a voltage waveform to a piezoelectric membrane. The waveform ensures the formation of the designed droplet and a stable jet. A survey of various drivingvoltage waveforms is conducted, which can serve as a reference to the research community that uses piezodriven inkjet printheads. The challenges of printing quality, stability, and speed and their solutions as published in recent studies are reviewed. Technologies for producing high-viscosity inkjets are explored, and the applications of inkjet printing technology in textile, displays, and wearable devices are discussed.

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A brief review of innovative strategies towards structure design of practical electronic display device

Cited by 11 publications

References 120 publications

Optical and microstructural characterization of Micro-LED with sidewall treatment

Optical and microstructural characterization of Micro-LED with sidewall treatment

Ferroelasticity Mediated Energy Conversion in Strained Perovskite Films

Classifications and Applications of Inkjet Printing Technology: A Review

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