InGaN/GaN blue LEDs
Improved light extraction of InGaN/GaN blue LEDs by GaOOH NRAs using a thin ATO seed layer
... In order to investigate the effect of cathodic voltage on the growth properties, the GaOOH NRAs were synthe- sized on the ITO electrode of LEDs with/without the ATO seed layer under various cathodic voltages for ...
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Preparation of a Periodic Polystyrene Nanosphere Array Using the Dip Drop Method with Post deposition Etching and Its Application of Improving Light Extraction Efficiency of InGaN/GaN LEDs
... of InGaN/GaN blue LED are difficult to obtain through experimental ...for InGaN/GaN blue LEDs without and with the PS NS array window layers with various periods in the x ...
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Recombination Pathways in Green InGaN/GaN Multiple Quantum Wells
... of InGaN well by absorbing the incident UV photons, and then parts of excited carriers relax to the states near the bandgap edge by releasing excess en- ergy as ...in InGaN well layers is low because of the ...
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Phosphor Free Apple White LEDs with Embedded Indium Rich Nanostructures Grown on Strain Relaxed Nano epitaxy GaN
... 2]. InGaN/GaN, multiple quantum wells (MQWs) are often employed as the active layers due to their relatively high recombination efficiency and blue to green III-Nitride LEDs are com- mercially ...
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Blue light emission from the heterostructured ZnO/InGaN/GaN
... Figure 4 illustrates the possibility of white light from the ZnO/InGaN/GaN heterostructured LEDs by the Commission International de l'Eclairage (CIE) x and y chromaticity diagram. Point D is the ...
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Surface Morphology Evolution Mechanisms of InGaN/GaN Multiple Quantum Wells with Mixture N2/H2 Grown GaN Barrier
... of blue or green LEDs requires relatively high indium composition of InGaN layer [11, ...of InGaN/GaN multiple quantum wells (MQWs) by worsening interface abruptness and intro- ducing ...
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Fabrication of InGaN/GaN MQWs Vertical Blue Light-Emitting Diodes Using Laser Lift-Off Technique
... years, GaN-based light-emitting diodes (LEDs) are the most promising candidate for development of more efficient and highly reliable light source for replacement of low efficient (~ 5-10%) incandescent ...
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Analysis of defect-related inhomogeneous electroluminescence in InGaN/GaN QW LEDs
... spectral blue shift observed in ...the blue-shift, we note that the blue shift in EL is low at small injection currents and rises with increasing current, which supports the suggestion drawn from the ...
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InGaN/GaN multilayer quantum dots yellow green light emitting diode with optimized GaN barriers
... White LEDs based on red, green, and blue LED chips exhibit higher color rendering index and higher luminous effi- ciency limit simultaneously, which is theoretically super- ior to the solution of ...
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InGaN/GaN quantum wells grown on polar and nonpolar GaN substrates
... of LEDs on nonpolar GaN substrates, reduced (relative to c-plane LEDs) or negligible blue-shift with increased drive currents is one of the most common observations leading to the claim that ...
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The Magnetic Field Effects on Radially Symmetric Core Shell Shell Structure
... metal-organic chemical vapor deposition (MOCVD). Nanowires consisting of a p-type Si core and n-type CdS shell were synthesized, and were used for the fabrication of nanoLEDs by Oliver Hayden [5] and interface and defect ...
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Carrier dynamics in InGaN/GaN on the basis of different In concentrations
... render InGaN alloys as a possible substitute for conventional solar cell absorbers ...[7,8]. InGaN- based solar cells also have the potential to be operated under harsh environments, where Si solar cells ...
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Facet recovery and light emission from GaN/InGaN/GaN core-shell structures grown by metal organic vapour phase epitaxy on etched GaN nanorod arrays
... Creating a similar growth mask for etched nanorods is a challenge since it must be added after the etching step. Conventional techniques such as evaporation, sputtering, and chemical vapour deposition preferentially ...
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Influence of stress on optical transitions in GaN nanorods containing a single InGaN/GaN quantum disk
... Further, the spectra in Fig. 7 taken together with the energy deposition profiles in Figs. 6(d) and 6(f) for the 10 and 30 keV electron beams show that broadening of the CL peak by 10–15 meV to higher energy derives from ...
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Investigation of facet-dependent InGaN growth for core-shell LEDs
... direction with growth rates from 3 to 8 nm/min, depending on reactor conditions. Each growth led to different color emission, i.e. different InN fraction was incorporated on each facet (Table 2). The emission peak energy ...
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Patterned growth of InGaN/GaN quantum wells on freestanding GaN grating by molecular beam epitaxy
... 700-nm-period GaN gratings with the grating width W of approximately 500, approximately 350, and approxi- mately 250-nm, ...unpatterned GaN substrate, grating structures locally change the dif- fusion ...
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LI - FI (LIGHT FIDILITY) ?TECHNOLOGY
... Li - Fi technology is based on LEDs for the transfer of data. The transfer of the data can be with the help of all kinds of light, no matter the part of the spectrum that they belong. That is, the light can belong ...
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Growth, nutritional quality, and energy use efficiency in two lettuce cultivars as influenced by white plus red versus red plus blue LEDs
... white LEDs, white plus red LEDs, red plus blue LEDs, and red plus blue LEDs supplemented with ultraviolet, green, or far-red light were ...
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Substrate Free InGaN/GaN Nanowire Light Emitting Diodes
... The EL spectra of the NW/PDMS membrane LEDs were measured at room temperature using the HR460 spectrometer equipped with a CCD camera. The EL spectra under different applied biases are presented in Fig. 5. The EL ...
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Impact of alloy fluctuations and Coulomb effects on the electronic and optical properties of c-plane GaN/AlGaN quantum wells
... in GaN and AlGaN, for instance, in a heterostructure one is left with a discontinuity in these ...c-plane GaN/AlGaN QWs, the electrostatic built-in fields lead to the situation that electron and hole wave ...
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