Results 11 to 20 of about 157,666 (280)

The modeling of LED's disposition

Lietuvos Matematikos Rinkinys, 2004
The goal of this work is to construct the scheme of constructing light  – emitting diodes system. The mathematical model was written for a light-emitting diodes lamp. The finite difference technique was used for the discretization of mathematical model.
Jurgita Dabulytė, Feliksas Ivanauskas , Artūras Žukauskas   +2 more
doaj   +3 more sources

Cathodic and Anodic Material Diffusion in Polymer/Semiconductor-Nanocrystal Composite Devices [PDF]

, 2007
In the present day, the information technologies and telecommunications sector continually increase their demand for low cost, low power consumption, high performance electroluminescent devices for display applications.
Bertoni, Cristina, Dunn, Steve, Eychmüller, Alexander, Gallardo, Diego E., Gaponik, Nikolai   +4 more
core   +1 more source

The effect of using light emitting diodes and fluorescent lamps as different light sources in growth inhibition tests of green alga, diatom, and cyanobacteria.

PLoS ONE, 2021
Aquatic organisms have been used to investigate the safety of chemicals worldwide. One such assessment is an algal growth inhibition test. Algal growth inhibition tests are commonly performed using a growth chamber with fluorescent lamps as the lighting ...
Akira Okamoto, Miyuki Imamura, Kazune Tani, Takeru Matsumoto   +3 more
doaj   +1 more source

Laser Diode Induced Lighting Modules [PDF]

, 2016
Laser diodes have the potential of becoming the light engines of future lighting technology since they have negligible efficiency droop factor, unlike light emitting diodes.
Fern, G.R., Fern, G.R., Salimian, A., Salimian, A., Silver, J., Silver, J., Upadhyaya, H., Upadhyaya, H.   +7 more
core   +2 more sources

STUDY OF MECHANISMS RESPONSIBLE FOR THE EFFICIENCY DEGRADATION OF THE III-NITRIDES LIGHT EMITTING DIODES [PDF]

Научно-технический вестник информационных технологий, механики и оптики, 2015
The results for external quantum efficiency degradation of two types of light emitting diodes based on III-nitrides: blue and ultraviolet ones are presented. Existing mechanisms proposed for the degradation are considered briefly.
N. M. Shmidt, A. S. Usikov, E. I. Shabunina, A. E. Chernyakov, S. Y. Kurin, Y. N. Makarov, H. I. Helava, B. P. Papchenko   +7 more
doaj   +1 more source

Red GaPAs/GaP Nanowire-Based Flexible Light-Emitting Diodes

Nanomaterials, 2021
We demonstrate flexible red light-emitting diodes based on axial GaPAs/GaP heterostructured nanowires embedded in polydimethylsiloxane membranes with transparent electrodes involving single-walled carbon nanotubes.
Vladimir Neplokh, Vladimir Fedorov, Alexey Mozharov, Fedor Kochetkov, Konstantin Shugurov, Eduard Moiseev, Nuño Amador-Mendez, Tatiana Statsenko, Sofia Morozova, Dmitry Krasnikov, Albert G. Nasibulin, Regina Islamova, George Cirlin, Maria Tchernycheva, Ivan Mukhin   +14 more
doaj   +1 more source

Reversible low-light induced photoswitching of crowned spiropyran-DO3A complexed with gadolinium(III) ions. [PDF]

, 2012
Photoswitchable spiropyran has been conjugated to the crowned ring system DO3A, which improves its solubility in dipolar and polar media and stabilizes the merocyanine isomer. Adding the lanthanide ion gadolinium(III) to the macrocyclic ring system leads
Brueggemann, Chantal, Knoesen, André, Kruttwig, Klaus, L'etoile, Noelle, Louie, Angelique Y, Tu, Chuqiao, Yankelevich, Diego R   +6 more
core   +4 more sources

Mixed halide perovskites for spectrally stable and high-efficiency blue light-emitting diodes

Nature Communications, 2021
Achieving bright and efficient blue emission in metal halide perovskite light-emitting diodes has proven to be challenging. Here, the authors demonstrate high EQE and spectrally stable blue light-emitting diodes based on mixed halide perovskites, with ...
Max Karlsson, Ziyue Yi, Sebastian Reichert, Xiyu Luo, Weihua Lin, Zeyu Zhang, Chunxiong Bao, Rui Zhang, Sai Bai, Guanhaojie Zheng, Pengpeng Teng, Lian Duan, Yue Lu, Kaibo Zheng, Tönu Pullerits, Carsten Deibel, Weidong Xu, Richard Friend, Feng Gao   +18 more
doaj   +1 more source

Variable numerical-aperture temporal-coherence measurement of resonant-cavity LEDs [PDF]

, 2003
The first interferometric measurements of temporal-coherence length variation with numerical aperture (NA) are described for 650 nm, resonant-cavity light-emitting diodes (LEDs) agreeing with spectrally derived results.
Coutinho, RC, Gray, JW, Griffiths, HD, Oulton, RF, Parry, G, Selviah, DR, Stavrinou, PN   +6 more
core   +1 more source

Sr[Li2Al2O2N2]:Eu2+—A high performance red phosphor to brighten the future

Nature Communications, 2019
Developing innovative materials for reduced energy consumption in phosphor converted white light-emitting diodes remains a challenge. Here, the authors report a narrow band red-emitting oxonitride material with a highly symmetrical Sr2 + coordination for
Gregor J. Hoerder, Markus Seibald, Dominik Baumann, Thorsten Schröder, Simon Peschke, Philipp C. Schmid, Tobias Tyborski, Philipp Pust, Ion Stoll, Michael Bergler, Christian Patzig, Stephan Reißaus, Michael Krause, Lutz Berthold, Thomas Höche, Dirk Johrendt, Hubert Huppertz   +16 more
doaj   +1 more source