strained layer quantum well
Transport properties for pure strained Ge quantum well
... the strained Ge quantum wells will require structural and electrical characterization to explain the ...buried layer is interface roughness that is a particularly important for narrow ...each ...
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The Effects of Strained Multiple Quantum Well on the Chirped DFB-SOA All Optical Flip-Flop
... without strained effects are used in the active layer in the DFB-SOA all optical flip ...the quantum well effects on the dynamic behavior of an all optical flip, the modal gain of a MQW region ...
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Complex quantum transport in a modulation doped strained Ge quantum well heterostructure with a high mobility 2D hole gas
... B layer, based on the SIMS-determined dopant density and a typical activation approximately 50%, the background conductivity extracted from Figure 3 gives an approximate value for the mobility of 200 cm 2 /Vs at ...
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Anisotropy in the hole mobility measured along the [110] and [110] orientations in a strained Ge quantum well
... of strained Ge (sGe) is through the epitaxial growth of a two-dimensional hole gas (2DHG) ...sGe layer of sufficient thickness to confine the carriers can only be realized if the sGe layer is grown ...
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A study of InP-based strained layer heterostructures
... each layer to be described in terms of an ‘effective m ...the layer, such as the periodic potential arising from the crystal ...the layer replaces the free electron mass in the text book problem. A ...
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Strained Germanium Quantum Well PMOSFETs on SOI with Mobility Enhancement by External Uniaxial Stress
... growth chamber is about 10 − 4 Pa, and the growth duration is 5 min. Figure 1 shows the atomic force microscope (AFM) images of Ge film on SOI samples grown at various temperatures. The formation of large numbers of Ge ...
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Spectroscopical analyis of strained silicon quantum wells
... study, Strained silicon Quantum Wells (QW) were characterised using a variety of micro-scopical ...analyse strained silicon quantum wells ...while layer depth and concentration profiles ...
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Magnetotransport study on as grown and annealed n and p type modulation doped GaInNAs/GaAs strained quantum well structures
... As a result of blueshift of the bandgap, conduction band states approaches localized N level, giving rise a stronger interaction; therefore, electron effective mass increases compared to the values in as-grown ...
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EFFECTS OF GEOMETRICAL STRUCTURE ON MICROWAVE AND OPTICAL PROPERTIES OF TRAVELING WAVE ELECTROABSORPTION MODULATORS BASED ON ASYMMETRIC COUPLED STRAINED QUANTUM WELLS ACTIVE LAYER
... wide well, the narrow well and the intra-step-barrier are ...barrier layer and strain amount of wells cause the electron and heavy hole wave functions are distributed dominantly in the wide and ...
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InAs/InAsSb type-II strained-layer superlattices for mid-infrared LEDs
... the quantum well and which is as expected approximately 4 times the exciton binding energy in the bulk semiconductor [18, 19] (assuming an exciton binding energy of ...
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Maximum entropy mobility spectrum of two dimensional hole gas in strained Si1 x/Si heterostructures
... Analysis of the magnetic-field-dependent resistivity tensors reveals a two-dimensional hole gas 2DHG in the Si/SiGe/Si quantum well, carriers in the boron-doped cap layer, and an unknown[r] ...
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Fractional quantum phenomena of 2DHGs within strained germanium quantum well heterostructures
... Instead of including multiple similar I-V plots displaying poor contact resistances and Schottky like characteristics, the table sums up contact methods attempted and the most prominent difficulty that arose with each ...
197
Ultra high hole mobilities in a pure strained Ge quantum well
... compared with the Hall effect measurements taken using the Van der Pauw method as well as the ME-MSA results. Although the Hall bar with a width of 50 μ m and a probe arm separation of either 250 or 500 μ m shows ...
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Terahertz quantum Hall effect for spin split heavy hole gases in strained Ge quantum wells
... near integer filling factors. A qualitative difference between samples with different well thicknesses is the presence or absence of plateaux at odd ν . This difference is linked to the contrasting Landau fan ...
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Rashba spin splitting and terahertz quantum Hall effect for heavy holes in strained germanium quantum wells
... information and therefore the phase. By measuring the radiation intensity, reflected and transmitted through a sample, the determination of the optical properties of materials relies on the use of the Kramers-Kronig ...
153
Highly efficient blue organic light emitting diodes using quantum well like multiple emissive layer structure
... material of BAlq shows the lowest current density. Con- sequently, we realized that a p-type semiconductor has more electron affinity than a n-type semiconductor [24]. Figure 2b shows the current density-voltage ...
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Inter dimensional effects in nano structures
... Low-dimensional quantum mechancis with one or two- dimensional Hamilton operators, or three-dimensional Hamiltonians with confining boundary conditions are widely used to analyze and understand the importance of ...
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Bound states in continuum: Quantum dots in a quantum well
... in quantum dots do not come necessarily ...called quantum rods, exhibit bound excited state with an energy embedded in the continuum of other free electronic states, above the ionization ...complex ...
15
Optical absorption in highly strained Ge/SiGe quantum wells: The role of Γ→Δ scattering
... Ge quantum well layers caused by the lattice mismatch with the virtual substrate results in a blue shift of the direct absorption edge, as well as a reduction in the Γ-valley scattering lifetime ...
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Elimination of Bimodal Size in InAs/GaAs Quantum Dots for Preparation of 1 3 μm Quantum Dot Lasers
... InAs/GaAs heterostructures grown by molecular beam epitaxy (MBE) have been paid much attention in order to fabricate low dimensional nanostructures, such as self-assembled QDs due to large lattice (~ 7%) mismatch between ...
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