[PDF] Top 20 High light-extraction GaN-based vertical LEDs with double diffuse surfaces
Has 10000 "High light-extraction GaN-based vertical LEDs with double diffuse surfaces" found on our website. Below are the top 20 most common "High light-extraction GaN-based vertical LEDs with double diffuse surfaces".
High light-extraction GaN-based vertical LEDs with double diffuse surfaces
... High Light-Extraction GaN-Based Vertical LEDs With Double Diffuse Surfaces Ya-Ju Lee, Hao-Chung Kuo, Senior Member, IEEE, Tien-Chang Lu, and ... See full document
6
Double Photonic Quasi-Crystal Structure Effect on GaN-Based Vertical-Injection Light-Emitting Diodes
... guided light can be extracted outside LED chips by scatterings at top transmitted PQC pattern surfaces; there- fore, in this case, the extraction probability is larger than that of conventional ... See full document
6
High-performance GaN-based vertical-injection light-emitting diodes with TiO2-SiO2 omnidirectional reflector and n-GaN roughness
... Terms—Flip-chip, light-emitting diode (LED), omnidirec- tional reflector ...ECENTLY, high-brightness GaN-based LEDs has be- come a strong candidate for applications such as outdoor ... See full document
3
High Extraction Efficiency of GaN-Based Vertical-Injection Light-Emitting Diodes Using Distinctive Indium-Tin-Oxide Nanorod by Glancing-Angle Deposition
... of GaN-based VI-LEDs with and without an ITO nanorod array were measured at room temperature, as shown in ...VI-LEDs with and without an ITO nanorod array at an injection current ... See full document
4
Light extraction efficiency of GaN-based LED with pyramid texture by using ray path analysis
... of GaN-based LEDs: (a) case 1, (b) case 2 and (c) case ...the high probability of escape, the seven paths occupy a large part of the LEE and dominate the phenomenon of the ...side ... See full document
11
High brightness GaN-based light-emitting diodes
... -plane with an inclined slope of 57 , facilitating a significant enhancement of the light extraction ...the high-resolution X-ray rocking curves (HR-XRDs) and device reliability testing, an ... See full document
8
Efficiency and Droop Improvement in GaN-Based High-Voltage Flip Chip LEDs
... three LEDs at the same consumed power. (a) (b) (c) Figure 5: Light intensity distribution map of (a) the conventional HV-LED, (b) HV-LED + ODR, and (c) ...agreement with the enhancement of power ... See full document
8
Efficiency and Droop Improvement in GaN-Based High-Voltage Flip Chip LEDs
... three LEDs at the same consumed power. (a) (b) (c) Figure 5: Light intensity distribution map of (a) the conventional HV-LED, (b) HV-LED + ODR, and (c) ...agreement with the enhancement of power ... See full document
8
Investigation of GaN-based light-emitting diodes using double photonic crystal patterns
... guided light in GaN-based LEDs ...the light extraction efficiency were improved by utilizing a micro-scale ...of GaN- based LEDs on PSSs with ... See full document
4
Improved Light Output Power of GaN-Based Light-Emitting Diodes Using Double Photonic Quasi-Crystal Patterns
... the light output radiation patterns of the compared LEDs packaged in TO cans at a driving current of 20 mA, as shown in ...of LEDs with NHPSS and double PQC structure with that ... See full document
3
Enhanced light output power of GaN-based vertical-injection light-emitting diodes with a 12-fold photonic quasi-crystal by nano-imprint lithography
... version) GaN-based materials have attracted considerable interest in many optoelectronic device applications, such as light- emitting diodes (LEDs) and laser diodes ...Recently, ... See full document
6
GaN-based high-Q vertical-cavity light-emitting diodes
... our vertical cavity with both high-reflectivity DBRs (R = 98% and 99%) and ITO current-spreading layer was calculated to be about 890, without taking into account the absorption in the ... See full document
3
Light extraction enhancement of InGaN-based green LEDs with a composite omnidirectional reflector
... green light-emitting diodes (LEDs) having composite omni-directional reflectors (ODRs) deposited on their ...2 with a thickness ratio that gives the largest possible 1D photonic ...and with ... See full document
6
Novel thin-GaN LED structure adopted micro abraded surface to compare with conventional vertical LEDs in ultraviolet light
... Comparing Equations 2 and 3, one can immediately observe the injection current dependence on Equation 2 brought by the term J 0 . As the injection current increases, the L s decreases. The reduction of L s means the ... See full document
8
Far-Field and Near-Field Distribution of GaN-Based Photonic Crystal LEDs With Guided Mode Extraction
... compared with the calculated band structures shown in ...spectrometer with the polarization axis in the s- or p-orientation and the spectra ...agreement with the calculated free photon ...coupling ... See full document
8
GaN-Based LEDs Grown on HVPE Growth High Crystalline Quality Thick GaN Template
... devices with a chip size of 350 × 350 μm 2 were then fab- ricated from the completed epitaxial ...samples. With an injection current of 20 mA, the forward voltages are ...the light output power of ... See full document
4
Power Enhancement of GaN-Based Flip-Chip Light-Emitting Diodes with Triple Roughened Surfaces
... of GaN-Based Flip-Chip Light-Emitting Diodes with Triple Roughened Surfaces Bo-Siao Cheng, Chia-En Lee, Hao-Chung Kuo , Tien-Chang Lu, and Shing-Chung Wang Department of Photonics and ... See full document
4
Improved Performance of High-Voltage Vertical GaN LEDs via Modification of Micro-Cell Geometry
... prepare vertical HV-LEDs connected with 2 × 2 micro-cells on Cu ...connected with four square micro-cells, the electrodes in these micro-cells were all far away from the edges, which induced ... See full document
8
Investigation of GaN-based vertical-injection light-emitting diodes with GaN nano-cone structure by ICP etching
... grown GaN material and the capability of the ICP process of dissociating GaN ...MOCVD-grown GaN on a sapphire substrate is known to have high densities of dislocation and defect on the order ... See full document
5
Directional light extraction enhancement from GaN-based film-transferred photonic crystal light-emitting diodes
... waveguided light traveling in the plane will be diffracted by the reciprocal wave vectors associated with the ...modes with average refractive in- dex n = ... See full document
4
相關主題