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Light Guide Layer Thickness Optimization for Enhancement of the Light Extraction Efficiency of Ultraviolet Light–Emitting Diodes [PDF]

open access: yesNanoscale Research Letters, 2021
Consider material machinability and lattice mismatch sapphire as substrates for the ultraviolet-C light-emitting diodes (UV-C LEDs) are commonly used, but their high refractive index can result in the total internal reflection (TIR) of light whereby some
Zhi Ting Ye   +4 more
doaj   +6 more sources

Enhancing Light Extraction Efficiency in OLED Using Scattering Structure-Embedded DMD-Based Transparent Composite Electrodes [PDF]

open access: yesNanomaterials, 2023
This study investigates the application of scattering structures to the metal layer in a DMD (Dielectric/Metal/Dielectric) configuration through plasma treatment. The purpose is to enhance the light extraction efficiency of organic light-emitting diodes (
Geun-Su Choi   +3 more
doaj   +2 more sources

Enhanced Light Extraction Efficiency by Self-Masking Technology with Carbonized Photoresist for Light-Emitting Diodes [PDF]

open access: yesMicromachines, 2023
This work investigates a self-masking technology for roughening the surface of light-emitting diodes (LEDs). The carbonized photoresist with a naturally nano/micro-textured rough surface was used as a mask layer. After growing the Si3N4 passivation layer
Xiu Zhang   +6 more
doaj   +2 more sources

Lattice Constant Effect on Diffracted Transmission of ITO Periodic Nanostructures and Improvement of the Light Extraction Efficiency of Light-Emitting Diodes [PDF]

open access: yesMicromachines, 2021
We studied the effects of the lattice pitch of indium-doped tin oxide (ITO) periodic nanostructures on the diffracted transmission to improve the light extraction efficiency of light-emitting diodes (LEDs). Periodic hexagonal ITO nanopillars with lattice
Zhanxu Chen   +3 more
doaj   +2 more sources

Higher Light Extraction Efficiency in Organic Light-Emitting Devices by Employing 2D Periodic Corrugation [PDF]

open access: yesFrontiers in Chemistry, 2022
Photons trapped in the form of waveguide (WG) modes associated with the organic–organic interface and in the form of surface plasmon polariton (SPP) modes associated with the metallic electrode–organic interface result in a large energy loss in organic ...
Yu Bai   +3 more
doaj   +2 more sources

Increasing the Light Extraction Efficiency of Organic Light-Emitting Devices by Electrochemically Corroded Patterned Substrates [PDF]

open access: yesMicromachines, 2023
A substrate with microstructure can increase the light extraction efficiency of OLEDs. However, the present preparation methods for micro- and nanostructures are not suited for broad-area manufacturing.
Yang Wang   +3 more
doaj   +2 more sources

Tripling the light extraction efficiency of a deep ultraviolet LED using a nanostructured p-contact [PDF]

open access: yesScientific Reports, 2022
Despite a wide array of applications, deep ultra-violet light emitting diodes offer relatively poor efficiencies compared to their optical counterparts.
Eduardo López-Fraguas   +7 more
doaj   +2 more sources

Enhancement of Light Extraction Efficiency Using Wavy-Patterned PDMS Substrates [PDF]

open access: yesNanomaterials
This study introduces an organic light-emitting diode (OLED) light extraction method using a wavy-patterned polydimethylsiloxane (PDMS) substrate created via oxygen (O2) plasma treatment. A rapid fabrication process adjusted the flow, pressure, duration,
Jian Cheng Bi   +7 more
doaj   +2 more sources

Double-Grating Displacement Structure for Improving the Light Extraction Efficiency of LEDs [PDF]

open access: yesThe Scientific World Journal, 2012
To improve the light extraction efficiency of light-emitting diodes (LEDs), grating patterns were etched on GaN and silver film surfaces. The grating-patterned surface etching enabled the establishment of an LED model with a double-grating displacement ...
Zhibin Wang   +5 more
doaj   +2 more sources

New nanostructure perovskite-based light-emitting diode with superior light extraction efficiency enhancement [PDF]

open access: yesScientific Reports
The external quantum efficiency (EQE) of a perovskite-based light-emitting diode (PELED) is a key indicator, comprising the internal quantum efficiency (IQE) and light extraction efficiency (LEE).
Saeed Rahimi   +2 more
doaj   +2 more sources

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