multiple quantum well material
A study of distributed Bragg reflector stacks and quantum wells for 1.55 micron Fabry-Perot modulators
... It was also apparent from this work, that the growth o f a complete operating modulator structure was not straightforward, and that once the complete structure was obtained, discovering the actual problem with a ...
206
Effect of triplet multiple quantum well structures on the performance of blue phosphorescent organic light emitting diodes
... Due to their high efficiency, phosphorescent organic light-emitting diodes [PHOLEDs] are promising light- emitting materials in organic light-emitting diodes [OLEDs]. An internal quantum efficiency of 100% could ...
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Finite-Difference Time-Domain Simulations on Overgrown InGaN/GaN Multiple Quantum Well (MQW) Light Emitting Diode (LED).
... material properties. In our simulation model we used a PML of thickness 1µm which is thick enough to absorb the incident field thereby avoiding the measurement of irrelevant reflections from the boundaries. ...
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MBE grown GaAsBi/GaAs multiple quantum well structures : structural and optical characterization
... GaAsBi/GaAs multiple quantum well p–i–n diodes were grown by molecular beam ...that multiple quantum well regions with clearly de fi ned well periodicities were ...63 ...
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Stimulated Emission in AlxGa1-xAs -GaAs Single and Multiple Quantum Well Heterostructure.
... quasi-two-dimensional quantum-well structure (step-like density of states) and in a bulk material ( parabolic density of states) by emitting LO ...
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Calculating Transmittivity of Photonic Multiple Quantum Well for S Polarized Incidence
... photonic multiple quantum well structure by computing transmittivity for normal and oblique incidence of s-polarized electromagnetic ...and material composition of the barrier region is varied ...
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Cathodoluminescence studies of chevron features in semi-polar (11-22) InGaN/GaN multiple quantum well structures
... intensity. However, if this was the sole reason, there would not be the discrepancy between the QW and the GaN emis- sion. The stripes of low and high intensity perpendicular to the chevron have a periodicity relating to ...
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Modelling, assessment and applications of multiple quantum well optical absorption modulators
... a quantum well ? Quantum well m aterial is composed of ultra- thin layers of different semiconductors, typically only 100 A (or about 30 m onolayers) thick, as show n in figure ...or ...
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Modeling Multiple Quantum Well and Superlattice Solar Cells
... novel material system grown lattice matched to ...fabricate multiple quantum wells and superlattice to improve the GaAs so- lar cell conversion ...
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The Effects of Strained Multiple Quantum Well on the Chirped DFB-SOA All Optical Flip-Flop
... flip flop operation in all figures, the set and reset signal wavelengths are tuned at λs=1555nm and λr=1310nm, respectively, where the holding beam wavelength is adjusted 0.3nm larger than the Bragg wavelengths according ...
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Theory of terahertz intervalence band polaritons and antipolaritons
... Furthermore, reflectivity experiments have demonstrated that THz intersub band polariton tuning is possible by electrical gating, in which the carrier density is modulated [12]. This increases the frequency range under ...
113
Double-barrier Superlattice Infrared Photodetector Integrated with Multiple Quantum-Well Infrared Photodetector to Improve Performance
... In this paper, we utilize superlattice (SL) and multiple quantum well (MQW) as active regions to achieve multi-color detection. The thick and graded barriers are used for photoelectrons to resonate ...
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Study on the Luminescence Properties of the Strain Compensated Quantum Well
... potential well material In- GaAs, and the barrier materials AlGaAs and GaAsP were respectively used to prepare the strained quantum wells and strain compensated quantum ...strained ...
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Research on Some New Results Arising from Multiple q-Calculus
... 2. Generalizations of some elementary functions belonging to q-calculus As it has been q-calculus, there doesn’t exist a general chain rule for multiple q-derivatives. That is, if we consider the function f(u(x)), ...
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Quantum well intermixing by ion implantation
... cKcqcKcKcqcKc cKcqcKcKcqcKc cKcqcKcKcqcKc cKcqcKcKcqcKc cKcqcKcKcqcKc.. cKcqcKcKc cKcqcKcKc cKcqcKcKc cKcqcKcKc cKcqcKcKc.[r] ...
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Graphene Electron States in a Quantum Well
... the quantum well may exist, forming a peculiar quantum “rod” in a grapheme ...the quantum well is also described in addition to Klein tunneling usually considered in such ...
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Observation of anomalous linear photogalvanic effect and its dependence on wavelength in undoped InGaAs/AlGaAs multiple quantum well
... Different from the ordinary LPGE due to asymmetry scat- tering on phonons, static defects, or other carriers in noncentrosymmetric media, the ALPGE is supposed to due to the optical momentum alignment effect [1,7]. This ...
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Study of GaN-based Materials for Light-emitting Applications
... It is important to note that Figure 4.5 was calculated for bulk InGaN. The situation may actually be somewhat less severe when dealing with InGaN/GaN quantum wells. This can be understood by referring to Cahn’s ...
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Quantum Multiple Q Learning
... in quantum computing has come interest in apply- ing it to reinforcement ...of quantum computing would significantly reduce the amount of time for the algorithm to reach ...for quantum reinforcement ...
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Physical model of quantum-well infrared photodetectors
... We should note that the presented model is general and can be applied to any QW structure, with an arbitrary number of discrete states, and delivers a direct estimate of the physical observ- ables, as well as ...
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