Results 31 to 40 of about 3,807,058 (336)
Surface plasmon polariton modification in top-emitting organic light-emitting diodes for enhanced light outcoupling [PDF]
, 2014 We report on the enhanced light outcoupling efficiency of monochrome top-emitting organic light-emitting diodes (OLEDs). These OLEDs incorporate a hole transport layer (HTL) material with a substantially lower refractive index (∼ 1:5) than the emitter ...
Hofmann, S. +14 more
core +1 more source
Experimental Characterization of Single-Color Power LEDs Used as Photodetectors
Sensors, 2020 Semiconductor-based light emitting diodes can be used for photon emission as well as for detection of photons. In this paper, we present a fair comparison between off-the-shelf power Light emitting diodes (LEDs) and a silicon photodetector with respect ...
Jan Sticklus +2 more
doaj +1 more source
Hortscience, 2001 Radish (Raphanus sativus L. cv. Cherriette), lettuce (Lactuca sativa L. cv. Waldmann's Green), and spinach (Spinacea oleracea L. cv. Nordic IV) plants were grown under 660-nm red light-emitting diodes (LEDs) and were compared at equal photosynthetic ...
N. Yorio +4 more
semanticscholar +1 more source
Technique and setup for diagnostics of p-n junction–package thermal resistance in high-power gallium nitride LEDs [PDF]
, 2012 We present a setup and procedure of studying p-n junction–package thermal resistance in high-power light-emitting diodes (LEDs) from their thermal relaxation. A set of LEDs mounted on a metal-core printed circuit board (MCPCB) were studied.
Kudryk Y. Y. +3 more
core +1 more source
Cogent Engineering, 2017 Phosphor-converted white light-emitting diodes (pc-WLEDs) are energy efficient and environmentally friendly light sources with a long lifetime, applicable in both display backlights and general lighting. In this research, we investigated the influence of
Phu Tran Tin +2 more
doaj +1 more source
Brazilian Dental Science, 2010 The aim of this study was to evaluate the microleakage of class II resin composite restorations polymerized with light-emitting diodes (LEDs) with different numbers of blue diodes.
Cristiane M. Amaral +4 more
doaj +1 more source
Beam divergence measurements of InGaN/GaN micro-array light-emitting diodes using confocal microscopy [PDF]
, 2005 The recent development of high-density, two-dimensional arrays of micrometer-sized InGaN/GaN light-emitting diodes (micro-LEDs) with potential applications from scientific instrumentation to microdisplays has created an urgent need for controlled ...
Choi, H.W. +6 more
core +3 more sources
Solar Simulator on the Basis of Powerful Light-Emitting Diodes
MATEC Web of Conferences, 2018 The Article describes the construction design and experimental results of the Solar Simulator, based on powerful LEDs with different radiation spectrum.
Aldoshina Oxana +4 more
doaj +1 more source
Organic–inorganic semiconductor heterojunctions for hybrid light-emitting diodes [PDF]
, 2021 This chapter discusses an alternative approach for generating white light through hybrid inorganic–organic light-emitting diodes (LEDs), combining blue-emitting organic LEDs with organic energy-down converters.
Bruckbauer, J. +3 more
core +1 more source
Nature Communications, 2020 Metal halide perovskites have been studied as promising materials for blue light-emitting diodes (LEDs) but the stability is still a bottleneck. Here Wang et al.
Ya-Kun Wang +17 more
doaj +1 more source