Results 11 to 20 of about 7,775,448 (290)
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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Model for Light Extraction Efficiency of MicroLEDs
, 2023 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.
Khaled Ahmed (14320710)
openaire +2 more sources
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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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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Study on Modulation Bandwidth and Light Extraction Efficiency of Flip-Chip Light-Emitting Diode with Photonic Crystals [PDF]
Micromachines, 2019 Quanbin Zhou, Hong Wang, Lijun Tan
exaly +2 more sources
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
doaj +1 more source
Molecules, 2021 The far ultraviolet C (UVC) light sources based on carbon nanotube (CNT) field emitters as excitation sources have become promising light sources for sterilization, disinfection, and water purification. However, the low light extraction efficiency of UVC–
Manoj Kumar Chandra Mohan +5 more
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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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Overcoming the Fundamental Limitation in Light-Extraction Efficiency of Deep-Ultraviolet Light-Emitting Diodes by Utilizing Transverse-Magnetic-Dominant Emission [PDF]
, 2019 While the demand for deep ultraviolet (DUV) light sources is rapidly growing, the efficiency of current AlGaN-based DUV light-emitting diodes (LEDs) remains very low due to their fundamentally limited light-extraction efficiency (LEE), calling for a ...
E. Fred Schubert +8 more
core +2 more sources
IEEE Photonics Journal, 2020 Fabricating the nanowire ultraviolet light emitting diodes (UV LEDs) has been a promising candidate to dramatically enhance the external quantum efficiency (EQE) of UV LEDs.
Zichen Zhang, Fangliang Gao, Guoqiang Li
doaj +1 more source