Impact of sidewall conditions on internal quantum efficiency and light extraction efficiency of micro-LEDs [PDF]
Advanced Optical Materials, 2023 The sidewall condition is a key factor determining the performance of micro‐light emitting diodes (µLEDs). In this study, equilateral triangular III‐nitride blue µLEDs are prepared with exclusively m‐plane sidewall surfaces to confirm the impact of ...
Jeong‐Hwan Park +8 more
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Enhanced Light Extraction Efficiency by Self-Masking Technology with Carbonized Photoresist for Light-Emitting Diodes [PDF]
Micromachines, 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]
Micromachines, 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
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Enhancing the Light Extraction Efficiency in Micro‐Organic Light‐Emitting Diodes with Metalens
Advanced Photonics Research, 2021 Due to the total internal reflection caused by the mismatch of the refractive indices between organic layers and oxide layers within an organic light‐emitting diode (OLED), most of the light energy is trapped inside the device; if the size of an OLED is ...
Jingen Lin +6 more
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Higher Light Extraction Efficiency in Organic Light-Emitting Devices by Employing 2D Periodic Corrugation [PDF]
Frontiers 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]
Micromachines, 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
Enhancement of Light Extraction Efficiency of UVC-LED by SiO2 Antireflective Film
Crystals, 2022 In order to achieve high quantum efficiency of AlGaN-based deep ultraviolet light-emitting diodes (UVC-LED), it is important to improve the light extraction efficiency (LEE).
Yu Wang +4 more
doaj +2 more sources
Light Guide Layer Thickness Optimization for Enhancement of the Light Extraction Efficiency of Ultraviolet Light–Emitting Diodes [PDF]
Nanoscale 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 +2 more sources
Double-Grating Displacement Structure for Improving the Light Extraction Efficiency of LEDs [PDF]
The 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
Crystals, 2019 In this study, we present a novel type of package, freeform-designed chip scale package (FDCSP), which has ultra-high light extraction efficiency and bat-wing light field.
Che-Hsuan Huang +9 more
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