Results 21 to 30 of about 323,922 (291)

Micro-LED Waveguide for Fluorescence Applications [PDF]

open access: yes2019 IEEE Photonics Conference (IPC), 2019
A micro-LED-coupled multimode slab waveguide is reported for fluorescence sensing. The device consists of a 1-dimensional micro-LED array coupled to a sub-mm polymeric slab for evanescent excitation of fluorescent analytes present on the surface. Proof-principle detection of semiconductor nanocrystals down to 0.2 pM/cm2 is demonstrated.
Farrell, Francesca Ann   +5 more
openaire   +2 more sources

Analysis of Factors Affecting Optical Performance of GaN-Based Micro-LEDs with Quantum Dots Films

open access: yesCrystals, 2020
Optical performance in terms of light efficiency, color crosstalk and ambient contrast ratio were analyzed for blue GaN-based micro-light emitting diodes (micro-LEDs) combined with red/green quantum dots (QDs)-polymethyl methacrylate (PMMA) films.
Zhili Zhao   +6 more
doaj   +1 more source

Dimension dependence of current injection path in GaInN/GaN multi-quantum-shell (MQS) nanowire-based light-emitting diode arrays

open access: yesNanophotonics, 2023
To light emitting diodes (LEDs), solving the common non-uniform current injection and efficiency degradation issues in (0001) plane micro-LED is essential.
Katsuro Sae   +12 more
doaj   +1 more source

High-Performance Core/Shell of ZnO/TiO2 Nanowire with AgCl-Doped CdSe Quantum Dots Arrays as Electron Transport Layer for Perovskite Solar Cells

open access: yesMolecules, 2020
Most previous studies of perovskite core/shell structures have been based on ZnO/TiO2 nanowires (NWs), which are not suitable for high photoelectric conversion efficiency. Here, core/shell ZnO/TiO2 NWs with AgCl-doped CdSe quantum dots were fabricated as
Jin Mo Kim, Bong Soo Lee, Sung Won Hwang
doaj   +1 more source

Micro‐LED Technologies and Applications [PDF]

open access: yesInformation Display, 2016
Light‐emitting diodes (LEDs) offer extraordinary luminance, efficiency, and color quality, but to date are largely used in displays as backlights or packaged pixel elements in large‐area LED billboard displays. Building high‐performance emissive displays in a smaller form factor requires a new micro‐LED technology separate from what is used for large ...
Vincent W. Lee   +2 more
openaire   +1 more source

Suppression of (0001) plane emission in GaInN/GaN multi-quantum nanowires for efficient micro-LEDs

open access: yesNanophotonics, 2022
GaInN/GaN multi-quantum-shell (MQS) nanowires (NWs) are gaining increasing attention as promising materials for developing highly efficient long-wavelength micro-light emitting diodes (LEDs). To improve the emission properties in GaInN/GaN MQS NWs, it is
Katsuro Sae   +13 more
doaj   +1 more source

Research Progress of Micro-LED Display Technology

open access: yesCrystals, 2023
Micro-LED display technology is considered to be the next generation of display technology, which has the characteristics of high miniaturization, thin film and integration, as well as the advantages of high brightness, high contrast, fast response speed
Shenghao Zhang   +15 more
doaj   +1 more source

High speed spatial encoding enabled by CMOS-controlled micro-LED arrays [PDF]

open access: yes, 2016
Arrays of GaN light-emitting diodes can be used for rapid display of pattern sequences or high speed parallel data transmission using different sites of the array.
Dawson, Martin D.   +6 more
core   +1 more source

Thermal and optical characterization of micro-LED probes for in vivo optogenetic neural stimulation [PDF]

open access: yes, 2013
Within optogenetics there is a need for compact light sources that are capable of delivering light with excellent spatial, temporal, and spectral resolution to deep brain structures. Here, we demonstrate a custom GaN-based LED probe for such applications
Dawson, Martin D   +6 more
core   +1 more source

Optimization of the optical structure of thin direct-lit LED backlights for LCD applications by using micro-LEDs

open access: yesJournal of Information Display, 2020
The optimized optical structure of the micro-LED-based direct-lit backlight was investigated through optical simulation. The backlight consisted of only one diffuser plate and an array of micro-LEDs with a reflection film positioned on the bottom of the ...
Jung-Gyun Lee, Jae-Hyeon Ko
doaj   +1 more source

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