Results 1 to 10 of about 157,825 (301)

Complex Evaluation of Light Sources in Case of Electric Power Cost Increase

open access: yesИзвестия высших учебных заведений и энергетических объединенний СНГ: Энергетика, 2008
The paper gives complex evaluation of efficiency of incandescent lamps, luminescent and light-emitting-diode (LED) light sources in case of electric power price increase.
Y. N. Kolesnik, A. V. Ivaneychik
doaj  

Iridium complex, a phosphorescent light-emitting diode material, serves as a novel chemical probe for imaging hypoxic tumor tissues [PDF]

open access: yes, 2007
Iridium complex, a promising organic light-emitting diode for next generation television displays, emits phosphorescence. Phosphorescence is quenched by oxygen. We used this oxygen-quenching feature for imaging tumor hypoxia.
Keigo Endo   +6 more
core   +1 more source

Luminescence and Squeezing of a Superconducting Light Emitting Diode

open access: yes, 2015
We investigate a semiconductor $p$-$n$ junction in contact with superconducting leads that is operated under forward bias as a light-emitting diode.
Hlobil, Patrik, Orth, Peter P.
core   +1 more source

Recent advances in solid-state organic lasers

open access: yes, 2011
Organic solid-state lasers are reviewed, with a special emphasis on works published during the last decade. Referring originally to dyes in solid-state polymeric matrices, organic lasers also include the rich family of organic semiconductors, paced by ...
Ahmad   +195 more
core   +3 more sources

Focal plane array optical proximity sensor [PDF]

open access: yes, 1984
An optical proximity sensor for optically detecting an object within a predetermined detection volume is described. More specifically, an optical proximity sensor is disclosed having an illuminator assembly including lens and a plurality of light ...
Johnston, A. R.
core   +1 more source

Light emitting diode as a photorefectance pump source

open access: yesSemina: Ciências Exatas e Tecnológicas, 2008
Light-emitting diodes (LEDs) with different wavelengths are used as photorefectance light pump sources. Photorefectance spectra of bulk semiconductors of GaAs and GaAs/InGaP and GaAsSbN/GaAs heterostructures prepared on GaAs substrates were investigated,
José Leonil Duarte   +4 more
doaj  

light-emitting diode

open access: yes, 2014
Citation: 'light-emitting diode' in the IUPAC Compendium of Chemical Terminology, 3rd ed.; International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. 10.1351/goldbook.LT07414 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms.
openaire   +1 more source

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