[PDF] Top 20 Hydrogen etching on the surface of GaN for producing patterned structures
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Hydrogen etching on the surface of GaN for producing patterned structures
... t The morphology of GaN etched in hydrogen atmosphere is ...that GaN surfaces have different profiles after being etched at different ...pressures. The profile resembles a ... See full document
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Hydrogen etching of GaN and its application to produce free-standing GaN thick films
... Introduction GaN is a major wide band gap semiconductor used in fabricat- ing green to ultraviolet optoelectronic ...study the properties of GaN; among them, etching is one of ... See full document
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Etching of GaN by microwave plasma of hydrogen
... in the electronic version) Introduction Gallium nitride (GaN) is a wide band-gap ...optoelectronics for light-emitting diodes (LEDs) and laser ...are the most commonly used substrates ... See full document
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Characterization of n-GaN with Naturally Textured Surface for Photoelectrochemical Hydrogen Generation
... reflection on the sample surface compared with the flat- surfaced n-GaN ...that patterned n-GaN epitaxial layer formed by selective area regrowth with metal stripes can be ... See full document
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Effect of Nitridation on the Regrowth Interface of AlGaN/GaN Structures Grown by Molecular Beam Epitaxy on GaN Templates
... CONCLUSIONS The effects of nitridation on GaN templates prior to regrowth of AlGaN/GaN structures by MBE were ...fabricated on samples prepared with 30 min ... See full document
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The Formation and the Plane Indices of Etched Facets of Wet Etching Patterned Sapphire Substrate
... facets on the bottom, there were 3 extra facets {1¯105} exposed on the ...2012 The Electrochemical ...advantages of high efficiency, long life, small size, environmental ... 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
... investigate the mechanism responding for perfor- mance enhancement of gallium nitride (GaN)-based light-emitting diode (LED) grown on chemical wet-etching-patterned ... See full document
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Enhancing the output power of GaN-based LEDs grown on wet-etched patterned sapphire substrates
... figure, the external quantum efficiency at 20 mA are 14.2% and 16.4% for conventional and PSS LEDs, ...know the external quantum efficiency is equal to the product of internal quantum ... See full document
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Investigation of InGaN/GaN light emitting diodes with nano-roughened surface by excimer laser etching method
... using the ray tracing method provided by Advanced System Analysis Pro- gram ...(ASAP). For simplicity, we employed a two-dimensional model which is similar on GaN-based LED ... See full document
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Self-Assembled Two-Dimensional Surface Structures for Beam Shaping of GaN-Based Vertical-Injection Light-Emitting Diodes
... shaping of GaN-based vertical-injection light-emitting diodes (VI-LEDs) employing biomimetic surface structures were ...demonstrated. The biomimetic surface structures ... See full document
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Hydrogen etch of GaN and its application to produce porous GaN caves
... that GaN tend to decompose in hydrogen environments, there has been few investigations in hydrogen etch of ...research on hydrogen etch of GaN under various ...that ... See full document
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The variation of ohmic contacts and surface characteristics on p-GaN induced by reactive ion etching
... The etching depth was 40 nm at ...Following the RIE process, two different techniques were adopted to improve the final ohmic ...temperatures of 500, 700, and 900°C in a nitrogen ... See full document
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The Formation of The Hexagonal Pyramid Facets on Wet Etching Patterned Sapphire Substrate
... Currently, the wet etching patterned sapphire substrate (PSS) has attracted much attention for its high production ...After etching in hot mixed H 2 SO 4 and H 3 PO 4 solution, ... See full document
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A Study of Hydrogen-Hydrogen lon Electrochemical Equilibrium on the Different Surface Conditions of Substrate Metals
... different from the metal-solution potential at the bright platinum electrode , that is , the homogeneous cell could have a non-zero residual potdntia l. The present [r] ... See full document
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Effect of Graded AlxGa1-xN Layers on the Properties of GaN Grown on Patterned Si Substrates
... thick GaN film Si substrate by using patterned Si substrate with proper choice of multi- Al x Ga 1 x N ...both the substrate patterning and the use of multi-Al x Ga 1 x N layers ... See full document
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Enhancement Performance of GaN-based Light-emitting Diodes by Modified Patterned Sapphire Surface
... R.O.C The PSSs were fabricated by wet etching. Compared with the platform-PSS, the modified-PSS was still capped with a layer on the top platform after wet ...etching. ... See full document
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Study of the internal quantum efficiency of InGaN/GaN UV LEDs on patterned sapphire substrate using the electroluminescence method
... discussion The temperature-dependent relative IQE curves versus injec- tion current are summarized in ...(b), for the PSS and non-PSS LEDs, respectively. We define the relative IQE as ... See full document
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Thermal annealing effects on the optical gain of InGaN/GaN quantum well structures
... Institute of Optical Sciences, National Central University, 32054 Chung-Li, Taiwan, ROC b Institute of Electro-Optical Engineering, National Chiao Tung University, Hsinchu 300, Taiwan, ROC c Department ... See full document
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Hydrogen plasma dry etching method for field emission application
... as the lowest energy required to remove an electron from the surface of a conducting material, to a point just beyond the metal’s surface, with zero kinetic ...from the ... See full document
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Method for modulating the wafer bow of free-standing GaN substrates via inductively coupled plasma etching
... When the thick GaN film was on the sapphire substrate before LLO, it bowed in convex direction with large bowing curvature of 3 m 1 owing to the thermal expansion mismatched ... See full document
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