Band-edge
Optimizing band edge slow light in silicon on insulator waveguide gratings
... of band-edge slow light in one-dimensional periodic ...photonic band gap [12, 13]. Band-edge slow light can be implemented in PICs by using Grating Waveguides [14], namely conventional ...
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Wideband Frequency Selective Surface with a Sharp Band Edge Based on Mushroom-Like Cavity
... Abstract—A wideband frequency selective surface (FSS) with a sharp band edge is proposed. The periodic cell includes a mushroom-like cavity and four L-type slots etched on the top and bottom conductor ...
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A Filtering Dielectric Resonator Antenna with High Band-Edge Selectivity
... the edge of the passband. However, the radiation null at the higher band edge is shifted from ...lower band edge shifts upward while that at the higher band edge shifts ...
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High degree of polarization of the near band edge photoluminescence in ZnO nanowires
... The photoluminescence of ZnO is typically composed of a near-band-edge (NBE) peak due to excitonic recom- bination and of a broad emission band in the visible range related to deep defect states ...
6
Compact Dual Band-Reject UWB Antenna with Sharp Band-Edge Frequency
... dual band-reject ultra wideband antenna with sharp band edge frequency of ...bottom edge of the patch for impedance ...GHz) band, and a pair of inverted S-shaped slot in the partial ...
15
Triple Band Edge Feed Patch Antenna; Design and Analysis
... Abstract: This article aims to design a patch antenna (PA) that can resonate at three bands. Its architecture contains circular ring enclosed by a flower shaped aperture with circular notch at its center, best suitable ...
5
AN INVESTIGATION OF THE POROUS SILICON OPTICAL-ABSORPTION POWER-LAW NEAR THE BAND-EDGE
... If, however, experiment reveals a confinement length distribution which is quite different and more varied than that suggested by our model, the quadratic conduction den[r] ...
17
First principles study on transition metal doped anatase TiO2
... The band edge position of a semiconductor as well as the redox potentials of the adsorbate governs the ability of a semiconductor to undergo photoexcited electron transfer to adsorb substances on its ...
8
Synthesis, magnetic properties and enhanced photoluminescence of Fe3O4-ZnO heterostructure multifunctional nanoparticles
... So, the center of visible band emission at 565 nm (equivalent to 2.21 eV) in the Fe3O4-ZnO MNPs is attributed to can be due to an electronic transition from the conduction band edge of[r] ...
8
An Efficient Co-Precipitation Synthesis of BaZr1-xCoxO3 Nanoparticles: Structural, Optical and Magnetic Properties
... absorption band around 220 nm is mainly due to the optical transitions from valence band to conduction ...absorption band edge wavelength shifts to a lower wave length (blue shift), indicating ...
15
Silicon Microwire Arrays for Photoelectrochemical and Photovoltaic Applications
... Theoretically, a single semiconductor material having a band gap energy (E g ) large enough to split water (1.23 eV) and the correct band edge positions could simultaneously drive the hy[r] ...
142
XRD AND FTIR STUDIES OF ARGON ION IMPLANTATION INTO MANGANESE DEPOSITED GALLIUM ANTIMONIDE THIN FILMS
... Abstract: The effect of implantation of 250 keV Argon ions in manganese deposited p- type GaSb at 5 x 10 15 to 1 x 10 16 ions cm -2 were investigated by Fourier Transform Infra Red Spectrometer [FTIR], X-ray Diffraction ...
8
Vol 2, No 10 (2011)
... pass band and the corresponding gain, the width of the stop band(s) and the attenuation therein; the band edge frequencies (which give an indication of the transition band) and the peak ...
8
On the Current Drive Capability of Low Dimensional Semiconductors: 1D versus 2D
... the source and drain Fermi levels in the contacts. All wires are assumed to respond in the same manner to the gate and drain field (see bottom part of Fig. 1). In case of the 2D graphene film, the threshold voltage is ...
8
Engineered exciton diffusion length enhances device efficiency in small molecule photovoltaics
... this band edge mainly corresponds to the donor molecules, this shift indicates that in SVA blend films, there is an increase in conjugation length due to an improved planarization of the donor molecule ...
9
Ultrafast charge dynamics in trap free and surface trapping colloidal quantum dots
... suffi cient to act as a barrier to the surface and the carrier wave function becomes more extended, increasing interaction with the surface in any case. Additionally, thick shells can act as barriers to band ...
8
Compact Dual-Band Inverted-F Filtering Antenna Using Dual-Mode Resonators
... single band operation can be ...good band-edge selectivity while the filtering antenna remains miniaturized by modifying the last stage of the ...LTE Band 43 (3.6–3.8 GHz) communication ...
9
Large scale calculations of the propagation of light in 3D photonic crystals with disorder
... the band gap of an inverse woodpile photonic ...mean band gap size and error margins. We observed that the band gap becomes smaller as the level of disorder increases until the band gap ...
8
Design of an Edge-Fed Quad-Band Slot Antenna for GPS/WiMAX /WLAN Applications
... using edge-feeding is proposed to support the four wire- less communication bands of ...GPS band and induce the WIMAX/WLAN band to support quad-band applications without affecting the ...
10
Compact Ultra-Wideband Antenna with Triple Band Notch Characteristics Using EBG Structures
... triple band-notch characteristics is ...via edge located (TVEL) electromagnetic band gap (EBG) structures near the feed line to cause triple frequency band notch characteristics over WiMAX ...
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