[PDF] Top 20 High efficiency and output power of near-ultraviolet light-emitting diodes grown on GaN substrate with back-side etching
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High efficiency and output power of near-ultraviolet light-emitting diodes grown on GaN substrate with back-side etching
... function of injection current for different ...probability of photons emitting from the active layer and reduce the total internal reflection by back-side ...the ... See full document
5
High performance 380-nm ultraviolet light-emitting-diodes with 3% efficiency droop by using free-standing GaN substrate manufacturing from GaAs substrate
... lattice-mismatch and thermal expansion coefficient incompatibility between the GaN epilayer and sapphire, resulting in a large piezoelectric field along the c-plane orientation, thus forming the ... See full document
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Study of GaN-based light-emitting diodes grown on chemical wet-etching-patterned sapphire substrate with V-shaped pits roughening surfaces
... Chang, and Shawn-Yu Lin Abstract—We investigate the mechanism responding for perfor- mance enhancement of gallium nitride (GaN)-based light-emitting diode (LED) grown on ... See full document
9
The effect of free-standing GaN substrate on carrier localization in ultraviolet InGaN light-emitting diodes
... 5, and 6 can be understood as ...surprisingly high quantum efficiencies ...tribution of indium/aluminum and phase separation of InGaN/AlGaN will procure the formation of ... See full document
7
Improvement in light-output efficiency of near-ultraviolet InGaN-GaN LEDs fabricated on stripe patterned sapphire substrates
... wells near ultraviolet light-emitting diodes (LEDs) were fabricated on a patterned sapphire substrate (PSS) with parallel stripe along the 1 ¯1 0 0 sapphire ... See full document
4
Performance enhancement of GaN-based flip-chip ultraviolet light-emitting diodes with a RPD AlN nucleation layer on patterned sapphire substrate
... Hg-free back lighting source in liquid- crystal displays, high-density optical data storage, and solid-state ...relatively high color rendering index and stable white light ... See full document
9
Investigation and Comparison of the GaN-Based Light-Emitting Diodes Grown on High Aspect Ratio Nano-Cone and General Micro-Cone Patterned Sapphire Substrate
... Chi, and Hao-Chung Kuo, Senior Member, IEEE Abstract—In this paper, we demonstrated the high perfor- mance GaN-based LEDs by using a high aspect ratio cone-shape nano-patterned sapphire ... See full document
6
Spatial Correlation Between Efficiency and Crystal Structure in GaN-Based Light-Emitting Diodes Prepared on High-Aspect Ratio Patterned Sapphire Substrate With Sputtered AlN Nucleation Layer
... between light output power (LOP) and injected forward current (L–I ) was also ...functions of injection current for the fabricated ...that of the LED I. With 20-mA current ... See full document
5
Enhancement of light output power of InGaN/GaN multiple quantum well light-emitting diodes by titanium dioxide texturing
... textured, output power, external quantum efficiency ...in high-performance optical devices such as light-emitting diodes (LEDs), laser diodes (LDs), photo- ... See full document
4
Study of InGaN-Based Light-Emitting Diodes on a Roughened Backside GaN Substrate by a Chemical Wet-Etching Process
... Chen, and Chun-Yen Chang Abstract—The InGaN-based light-emitting diodes (LEDs) with a roughened backside on the N-face surface of GaN substrate were ... See full document
3
Light-output enhancement of nano-roughened GaN laser lift-off light-emitting diodes formed by ICP dry etching
... as light-emitting diodes (LEDs) and laser ...Recently, high brightness GaN-based LEDs have become a strong candidate for applications such as displays, traffic signals, backlight ... See full document
3
High light output intensity of titanium dioxide textured light-emitting diodes
... the light-emitting diodes (LEDs), laser diodes (LDs), photoconduc- tive detectors and photovoltaic detectors in the blue-ultraviolet (UV) range of the light ... See full document
3
Performance of GaN-based light-emitting diodes fabricated using GaN epilayers grown on silicon substrates
... Current-voltage, light output power, far-field radiation patterns, and electroluminescence characteristics of these three LEDs were ...current of 700 mA, the output powers ... See full document
9
Low Droop Nonpolar GaN/InGaN Light Emitting Diode Grown on m-Plane GaN Substrate
... 2010. High efficiency light sources based on III-nitride light emitting diodes 共LEDs兲 are required for the general illumination market, where the driving current of ... See full document
3
High efficiency light emitting diode with anisotropically etched GaN-sapphire interface
... fabrication and study of high efficiency ultraviolet light emitting diodes with inverted micropyramid structures at GaN-sapphire ...wet ... See full document
4
Optical Simulation and Fabrication of Near-Ultraviolet LEDs on a Roughened Backside GaN Substrate
... wet-etching, GaN, light extraction, near-ultraviolet light-emitting diode (NUV LED), ...growth of GaN layers have recently become available as a result ... See full document
3
Efficiency improvement of GaN-based ultraviolet light-emitting diodes with reactive plasma deposited AlN nucleation layer on patterned sapphire substrate
... the side wall of PSS. From the TEM image of AlN located at the bottom of PSS, a mixed crystallized and amorphous AlN of 25 nm on sapphire was observed, and from the ... See full document
6
Enhanced Light Output Power and Growth Mechanism of GaN-Based Light-Emitting Diodes Grown on Cone-Shaped SiO2 Patterned Template
... been with National Chiao-Tung University (NCTU) in Tainan, Taiwan, where he holds a position as an assistant ...design and fabrication of semiconductor optoelectronic devices, including LEDs, solar ... See full document
7
Crystal Quality and Light Output Power of GaN-Based LEDs Grown on Concave Patterned Sapphire Substrate
... quality and light output power of GaN-based light-emitting diodes (LEDs) grown on concave patterned sapphire substrate (CPSS) were ... See full document
8
Crystal Quality and Light Output Power of GaN-Based LEDs Grown on Nanoporous Patterned Sapphire Substrate
... the GaN/sapphire and GaN/air void interfaces were ...lots of the downward photons still suffer from to- tal ...from GaN to sap- phire), the light will experience total internal ... See full document
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