surface-emitting light-emitting diodes
AlGaInP light emitting diodes with SACNTs as current spreading layer
... Figure 3 showed the optical transmittance curves of SACNT and Au-coated SACNT thin film on a polished glass substrate from 300 to 800 nm. At the wavelength of 630 nm, the optical transmittance of SACNT and Au-coated ...
5
Enhancement of light output power of GaN based light emitting diodes with photonic quasi crystal patterned on p GaN surface and n side sidewall roughing
... the light extraction efficiency and brightness in the LEDs have been studied, including surface roughen- ing texturing method [4-12], sidewall roughness [13,14], and insertion of two-dimensional (2D) ...
6
Enhancement in Light Extraction Efficiency of GaN Based Light Emitting Diodes Using Double Dielectric Surface Passivation
... two diodes (the broken blue line + the green line), can be drawn as red line in the figure, where the slope of the I-V curve is smaller than that of the I-V curve before the passivation, indicating that the series ...
8
Fabrication and characterization of organic light emitting diodes for display applications
... From the previous goal (goal 2), it was demonstrated that LiF improves device performance due to enhanced electron injection. A number of mechanisms have been proposed to explain this effect, such as electron tunneling ...
77
Recent advances in light outcoupling from white organic light emitting diodes
... It should be noted that the discussion above exclusively considers OLEDs fabricated on stan- dard glass substrates (i.e., substrates with a refractive index around n ¼ 1.51). Thus, between the organic materials ...
21
Substrate Free InGaN/GaN Nanowire Light Emitting Diodes
... high light-up voltage is attributed to the non-ohmic nature of the ITO contact to the moderately doped p- GaN ...larger surface compared to the axial region, becomes ...
6
Enhanced Performance of Quantum Dot Based Light Emitting Diodes with Gold Nanoparticle Doped Hole Injection Layer
... dot-based light-emitting diodes (QLEDs) comprising ZnCdSe/ZnS core-shell QDs as an emitting layer were enhanced by employing Au-doped poly(3,4-ethylenedioxythiophene)/polystyrene sulfonate ...
8
Light-Emitting Diodes in the Solid-State Lighting Systems
... the light is reflected at the material/air interface back into the bulk of the ...the light extraction from ...of light strike the LED surface package ...
9
Growth and characterization of thin Cu phthalocyanine films on MgO(001) layer for organic light emitting diodes
... We used a ultra-high vacuum (UHV)-molecular beam epi- taxy film evaporation system to stack successively inor- ganic elements beyond chemically etched p-type Si(001) wafers. The base pressure of the UHV-MBE chamber was ...
6
WATER DISINFECTION USING ULTRAVIOLET-A AND VISIBLE LIGHT-EMITTING DIODES
... countries, surface waters such as rivers, streams and lakes are used for multiple activities, including livestock watering, bathing, and ...(UV) light treatment ...
8
Dendrimer light emitting diodes
... of light to escape: it must be transparent whilst still being able to inject ...remove surface defects and contaminants prior to organic deposition so as to maximise the hole injection whilst creating a ...
372
Light emitting diodes enhanced by localized surface plasmon resonance
... by light often agree well; for example, simulation results from nanos- caled antennae which can effectively enhance light emission have been reported ...
12
Enhanced light emission from top emitting organic light emitting diodes by optimizing surface plasmon polariton losses
... from large losses due to the SPP mode, which is excited at the metallic opaque back reflector, or, if the distance between organic emitter and the metal is increased, another WG mode as a source of loss is introduced, ...
10
Multispectral time-of-flight imaging using light-emitting diodes
... green brick, blue brick, purple brick, the horse and the saddle, respectively. For comparison, the spectra of each of the bricks was also measured using a commercial spectrometer (Avantes Avaspec-2048L) and halogen ...
15
Synthesis And Characterization of Zno-Nanorods By Sol-Gel Method For White Led Phosphors
... Light emitting diodes have attracted a lot of attention in recent times as potential candidates for new generation illumination in present days; light emitting diodes (LEDs) have ...
7
Synthesis and Characterization of Zno - Nanorods by Sol-Gel Method for White LED Phosphors
... Light emitting diodes have attracted a lot of attention in recent times as potential candidates for new generation illumination in present days; light emitting diodes (LEDs) have ...
7
The Reflected-Shifted-Truncated-Gamma Distribution for Negatively Skewed Survival Data with Application to Pediatric Nephrotic Syndrome
... incandescent light bulb. Light emitting diodes (LED) are emerging as the technology of choice in a wide range of applications, including but not limited to residential and commercial ...
112
COMPARISON OF A NEW HOST MATERIAL FOR ORGANIC LIGHT EMITTING DIODES
... Organic light emitting diodes (OLEDs) are a new branch of LED technology which has in recent times gained a lot of at ...organic light emit t ing diodes (OLEDs) is that it has low ...
6
White top emitting organic light emitting diodes with solution processed nano particle scattering layers
... photoresist solution, which penetrate into the organic stack during dip-coating. However, at operating voltage, the differ- ence in current is negligible, which implies that the dip- coating process does not induce ...
6
Controlling the emission efficiency of blue green iridium(III) phosphorescent emitters and applications in solution processed organic light emitting diodes
... Analytical thin layer chromatography (TLC) was performed with silica plates with aluminum backings (250 μm with indicator F-‐254). Compounds were visualized under UV light. 1 H, 19 F and 13 C NMR spectra were ...
31