Results 101 to 110 of about 2,576,589 (345)
Exciton Binding Energy of Phosphorescent Emitter Molecules in Organic Light‐Emitting Diodes
Advanced Functional Materials, EarlyView.Energy level alignment is key to efficient OLED design, yet determining LUMO energies remains challenging. A methodology based on field‐induced dissociation and kinetic Monte Carlo simulations is presented to extract LUMO energies of iridium‐based phosphorescent emitters from their exciton binding energy.
Hiroki Tomita +6 more
wiley +1 more source
Intelligent Modeling for Transfer Function Control of DBR Semiconductor Laser at Near-Working Point
IEEE Access, 2020 In this paper, a novel intelligent modeling method for transfer function control of DBR semiconductor lasers at near-working point is proposed, which is based on the quantum particle swarm optimization (QPSO) algorithm.
Xiufei Li +5 more
doaj +1 more source
Bistability and boundary crisis in a semiconductor laser with phase-conjugate feedback
, 2002 We present a detailed study of a route to chaos via quasiperiodicity on a torus in a semiconductor laser with phase-conjugate feedback. Highlighting the use of new tools that go far beyond mere simulation, we compute bifurcation diagrams and unstable ...
Green, K +2 more
core
All-optical sampling utilising two-photon absorption in semiconductor microcavity [PDF]
, 2005 A highly-efficient optical sampling system based on Two-Photon Absorption in a semiconductor micro-cavity is presented.
Krug, T. +14 more
core +1 more source
Ultrasensitive Anti‐Stokes Luminescence Thermometry in Transition Metal Dichalcogenide Monolayers
Advanced Functional Materials, EarlyView.We demonstrate a highly sensitive nanothermometer using anti‐Stokes photoluminescence, also known as photoluminescence upconversion (UPL), in monolayer tungsten disulfide. A strong resonantly enhanced UPL is observed, confirming the central role of optical phonons in the PL upconversion mechanism.
Sharada Nagarkar +6 more
wiley +1 more source
IEEE Access, 2018 A system scheme for generating ultra-broadband microwave frequency comb (MFC) based on a semiconductor laser under optical injection of regular pulse from a current-modulated laser is proposed, and the performances of the generated MFC are numerically ...
Xiao-Qin Xu +3 more
doaj +1 more source
Mode structure of a semiconductor laser with feedback from two external filters
, 2008 We study a semiconductor laser subject to filtered optical feedback from two separate filters. This work is motivated by an application where two fiber gratings are used to stabilize the output of a laser source.
Slowinski, P. +4 more
core
Indication of current-injection lasing from an organic semiconductor
Applied Physics Express, 2019 In this study, we investigate the lasing properties of 4,4′-bis[(N-carbazole)styryl]biphenyl thin films under electrical pumping. The electroluminescent devices incorporate a mixed-order distributed feedback SiO2 grating into an organic light-emitting ...
Atula S. D. Sandanayaka +9 more
semanticscholar +1 more source
Advanced Functional Materials, EarlyView.A quantum dot–tellurium thin‐film photodetector autonomously discriminates visible and infrared wavelengths through polarity‐reversible photoresponses. Engineered carrier separation and gain modulation enable filter‐free multispectral sensing within a single‐device architecture.
Yong Min Lee +7 more
wiley +1 more source
A 271.8 nm deep-ultraviolet laser diode for room temperature operation
Applied Physics Express, 2019 We present a deep-ultraviolet semiconductor laser diode that operates under current injection at room temperature and at a very short wavelength. The laser structure was grown on the (0001) face of a single-crystal aluminum nitride substrate.
Ziyi Zhang +6 more
semanticscholar +1 more source