[PDF] Top 20 Small GaN-based light-emitting diodes with a single electrode pad fabricated on a sapphire substrate
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Small GaN-based light-emitting diodes with a single electrode pad fabricated on a sapphire substrate
... Small-scale GaN-based LEDs with a single electrode pad enjoying such properties as low cost, low series resistance, high efficiency and high yield were ... See full document
6
Performance enhancement of GaN-based flip-chip ultraviolet light-emitting diodes with a RPD AlN nucleation layer on patterned sapphire substrate
... (FCUV-LEDs) with a reactive plasma deposition (RPD) AlN nucleation layer on ...layer on PSS can potentially enhance the subsequent GaN quality via its step coverage difference which ... See full document
9
GaN-based light-emitting diodes prepared on vicinal sapphire substrates
... measured on the wafer by injecting DC currents into the LED ...the fabricated LEDs prepared on 08 and 18 tilted sapphire substrates, ...prepared on 08 and 18 tilted sapphire ... See full document
4
Efficiency improvement of GaN-based ultraviolet light-emitting diodes with reactive plasma deposited AlN nucleation layer on patterned sapphire substrate
... PSS, a mixed crystallized and amorphous AlN of 25 nm on sapphire was observed, and from the TEM image of AlN position at the side wall of PSS, a 9-nm- thick AlN nucleation layer with ... See full document
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Investigation of GaN-based light emitting diodes with nano-hole patterned sapphire substrate (NHPSS) by nano-imprint lithography
... (NIL) a b s t r a c t In this paper, gallium-nitride (GaN)-based light-emitting diodes (LEDs) with nano-hole patterned sap- phire (NHPSS) by nano-imprint ... See full document
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Light Output Enhancement of GaN-Based Light-Emitting Diodes by Optimizing SiO2 Nanorod-Array Depth Patterned Sapphire Substrate
... devices with a chip size of 300 300 m 2 were then fabricated from the completed epitaxial structures with and without SiO 2 ...impact on the LED electrical properties as shown in ... See full document
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Ultraviolet/blue light-emitting diodes based on single horizontal ZnO microrod/GaN heterojunction
... grown on Si (100) substrates by a high-temperature thermal evaporation ...process. A mix- ture of ZnO and graphite powders (1:1 in weight ratio) was loaded in an alumina boat serving as the source ... See full document
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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
... observed on the cone region of HARPSS using the conventional MOCVD-grown AlN nucleation ...the GaN surface. Such observation of the GaN crystal structure on the cone region of the PSS has been ... See full document
5
A Sn-based metal substrate technology for the fabrication of vertical-structured GaN-based light-emitting diodes
... 共Sn兲 based solder balls and patterned laser lift-off technique, a metal substrate technology was proposed for the fabrication of vertical-structured metal substrate GaN-based ... See full document
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Nanoscale epitaxial lateral overgrowth of GaN-based light-emitting diodes on a SiO(2) nanorod-array patterned sapphire template
... The GaN-based LEDs used in this study were grown on a 2 ...using a low-pressure MOCVD system 共Aixtron 2400 ...started with the deposition of a 200-nm-thick SiO 2 layer ... See full document
4
Light Extraction Enhancement of GaN-Based Light-Emitting Diodes Using Crown-Shaped Patterned Sapphire Substrates
... three fabricated LEDs. To obtain a better physical understanding of the output power improvement, a Monte Carlo ray-tracing simulation was used to calculate the LEE of three LEDs ...electrical ... See full document
3
Investigation and Comparison of the GaN-Based Light-Emitting Diodes Grown on High Aspect Ratio Nano-Cone and General Micro-Cone Patterned Sapphire Substrate
... fabricate a high depth HAR-NPSS, the NIL was processed with a deep imprint-mold with a high depth of 700 ...onto sapphire substrate surface. Then, a deep pat- ... See full document
6
InGaN-based light-emitting diodes grown and fabricated on nanopatterned Si substrates
... grown on microscale 共340⫻340 m 2 兲 grid-patterned Si substrate 共MPSi for short in later discussion兲 with SiN x as an in situ ...effective on im- proving crystal quality and releasing the ... See full document
4
A Stress Analysis of Transferred Thin-GaN Light-Emitting Diodes Fabricated by Au-Si Wafer Bonding
... Next, a 2-D mapping scan of the Raman examination is used to observe the transferred GaN surface stress ...calculated. Based on the previous discussion, we understand that the larger the ... See full document
6
Study of GaN light-emitting diodes fabricated by laser lift-off technique
... INTRODUCTION GaN-based wide-band-gap semiconductors are widely used for optoelectronic devices, such as blue light-emitting diodes 共LEDs兲 and laser diodes ...as sapphire ... See full document
8
Improved Output Power of Nitride-Based Light-Emitting Diodes With Convex-Patterned Sapphire Substrates
... non-patterned sapphire substrates. The LEDs structure consists of a low-temperature GaN nucleation layer, a 2 µm-thick undoped GaN bulk layer, a 2 µm-thick Si- doped n + ... See full document
3
Performance of GaN-based light-emitting diodes fabricated using GaN epilayers grown on silicon substrates
... 5. Light output power and external quantum efficiency as a function of injection current for the LS-LED, DT-LED, and ...in light intensity by adopting the high-reflection mirror and roughened ... See full document
9
Study of InGaN-Based Light-Emitting Diodes on a Roughened Backside GaN Substrate by a Chemical Wet-Etching Process
... wet-etching, GaN, light extraction, near-ultraviolet (NUV) light-emitting diode ...in GaN-based blue, green and ultraviolet light emitting diodes (LEDs) [1], ... See full document
3
Study of GaN-based light-emitting diodes grown on chemical wet-etching-patterned sapphire substrate with V-shaped pits roughening surfaces
... (GaN)-based light-emitting diode (LED) grown on chemical wet-etching-patterned sapphire substrate (CWE-PSS) with V-Shaped pit features on the top ...and ... See full document
9
Highly efficient white organic light-emitting diodes with single small molecular emitting material
... White light organic light-emitting devices 共WOLEDs兲 have attracted much current interest because of their poten- tial applications for large area solid-state lightings, maskless full color OLED ... See full document
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