Results 11 to 20 of about 295,338 (287)
Effect of Surface Texture on Light Extraction Efficiency for LEDs
Crystals, 2023 The light extraction efficiency of an LED is dependent on its surface texture. However, the surface of the p-GaN layer is not easy to be etch with inverted hexagonal pyramid structures (IHPS) with small top widths and large depths using existing methods.
Fu-Der Lai
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Single-step-fabricated disordered metasurfaces for enhanced light extraction from LEDs [PDF]
Light: Science & Applications, 2021 While total internal reflection (TIR) lays the foundation for many important applications, foremost fibre optics that revolutionised information technologies, it is undesirable in some other applications such as light-emitting diodes (LEDs), which are a ...
Peng Mao +8 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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Model for Light Extraction Efficiency of MicroLEDs
, 2023 <p>For the first time, a semi-analytic formulation of the light extraction efficiency (LEE) of MicroLEDs is presented. The model is based on light tracing equations and delineates the contributions of reflection on the sidewalls of the MicroLEDs to enhance LEE compared to large LED.</p>
Khaled Ahmed (14320710)
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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
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Light extraction efficiency enhancement of flip-chip blue light-emitting diodes by anodic aluminum oxide [PDF]
Beilstein Journal of Nanotechnology, 2018 We produced an anodic aluminum oxide (AAO) structure with periodic nanopores on the surface of flip-chip blue light-emitting diodes (FC-BLEDs).
Yi-Ru Huang +8 more
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Ultra-directional and high-efficiency µLEDs via gradient index filled micro-horn collimators [PDF]
Scientific ReportsMicro-LEDs (µLEDs) are poised to transform near-eye AR/VR, display, and optical communication technologies, but they are currently hindered by low light extraction efficiency and non-directional emission. Our study introduces an innovative approach using
Alexander Luce, Rasoul Alaee, Aimi Abass
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IEEE Photonics Journal, 2011 The fabrication studies of silica/polystyrene (PS) colloidal microlens arrays with various aspect ratios were performed on the III-nitride light-emitting diodes (LEDs).
Xiao-Hang Li +5 more
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Enhanced light extraction efficiency of OLEDs with quasiperiodic diffraction grating layer
Optics Express, 2016 We presented enhanced light extraction efficiency of organic light emitting diodes (OLEDs) cells with a nano-sized diffraction grating layer. Various diffraction gratings of different morphologies including linear, cubic, hexagonal and quasiperiodic patterns were fabricated by multiplexing light interference exposure on an azobenzene thin film.
Kwan Hyun Cho, , Yong-Cheol Jeong
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Crystals, 2022 Ultraviolet (UV) light-emitting diodes (LEDs), as one of the more promising optoelectronic devices, are intrinsically limited by poor light extraction efficiencies (LEEs).
Biaomin Li +6 more
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