Results 121 to 130 of about 38,871 (311)

Remote temperature mapping of high-power InGaN/GaN MQW flip-chip design LEDs

, 2005
We report on the study of heat 2D-distribution in InGaN LEDs with the stress made on local device overheating and temperature gradients inside the structure.
Zakheіm А. L., Malyutenko O. Y., Zinovchuk A. V., Malyutenko V. K.   +3 more
core  

New‐Era Polymer Thermoelectrics: Material Innovations, Doping Frontiers, Decoupling Strategies, and Unconventional Applications

Advanced Materials, EarlyView.
The field of polymer thermoelectrics is entering a new era, featuring breakthroughs in addressing the conventional performance disparity between p‐type and n‐type polymers, pioneering doping frontiers, and sophisticated decoupling strategies. This review explores innovations in molecular design and superior stabilities, bridging the gap from ...
Suhao Wang
wiley   +1 more source

Computer modeling of transient processes in LED modules

Фізика і хімія твердого тіла
In this paper, a theoretical analysis and a practical study of the transient processes occurring when the LED modules are switched on are carried out.
I.T. Kogut, T.M. Demyanchuk
doaj   +1 more source

Optimization of fins arrangements for the square light emitting diode (LED) cooling through nanofluid-filled microchannel. [PDF]

Sci Rep, 2021
Hamida MBB, Hatami M.
europepmc   +1 more source

Correlated Charge Transport in an Organic Coulomb Glass

Advanced Materials, EarlyView.
ABSTRACT Advances in the development of organic field‐effect transistors (OFETs), electrically gated organic semiconductors (EGOFETs), and organic electrochemical transistors (OECTs) allow for the operation of these devices at very high charge‐carrier densities, where Coulomb interactions between carriers can be expected to become significant.
Magdalena Sophie Dörfler, Heinz Bässler, Harald Oberhofer, Anna Köhler   +3 more
wiley   +1 more source

DEEP ULTRAVIOLET LIGHT EMITTING DIODES (DUV LEDS)

Journal of Engineering Science (Chişinău), 2018
There are a variety of applications for devices that extend into the deep-UV, including biological agent detection and optical storage. The nitride material system is a set of semiconducting compounds that have wavelengths that span a broad range, from yellow to deep-UV. AlGaN has a direct bandgap that extends into the deep-UV range; the device-quality
openaire   +2 more sources

A Highly Integrated and Diminutive Fluorescence Detector for Point-of-Care Testing: Dual Negative Feedback Light-Emitting Diode (LED) Drive and Photoelectric Processing Circuits Design and Implementation. [PDF]

Biosensors (Basel), 2022
Wang Y, Fang Y, Liu H, Su X, Chen Z, Li S, He N.   +6 more
europepmc   +1 more source

Development of nanosecond range light sources for calibration of astroparticle cherenkov detectors

In this thesis the development of light emitting diodes (LED) is reviewed. The emphasis is put on devices emitting at the blue region of the spectrum. The physical characteristics of these devices are considered.
Veledar, Omar
core  

Using Equalizers to Increase Data Rates in Organic Photonic Devices for Visible Light Communications Systems

, 2014
This thesis proposes to marry two separate technologies together. The first technology is that of visible light communications (VLC), and the second is small molecule and polymer organic photonic devices.
Haigh, Paul
core  

Thermodynamic Limits to Molecular Doping in Conjugated Polymers: A Perspective on Phase Behavior and Miscibility

Advanced Materials, EarlyView.
Molecular doping of conjugated polymers is fundamentally constrained by thermodynamic phase behavior. This Perspective reframes doping efficiency and stability in terms of miscibility limits, binodals, and solvus boundaries, highlighting the role of effective interaction parameters and charge transfer.
Somayeh Kashani, Justin Neu, Sung‐Joo Kwon, Runqio Song, Zixuan Chen, Tajah Trapier, Paschalis Gkoupidenis, David Ginger, Wei You, Jasper J. Michels, Harald Ade   +10 more
wiley   +1 more source