bandgap


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Related to bandgap: Photonic bandgap

bandgap

In a material, the energy difference between its non-conductive state and its conductive state. There is virtually no bandgap in most metals, but a very large one in an insulator (dielectric). In a semiconductor, the bandgap is small. Technically, the bandgap is the energy it takes to move electrons from the valence band to the conduction band.
References in periodicals archive ?
21 Table 2 Temperature-dependent parameters of HIT layers at 25[degrees]C and 75[degrees]C Parameter Unit Dielectric Constant -- Electron Affinity eV Mobility Bandgap (Eg) eV Optical Bandgap (Egopt) eV Effective Conduction Band Density of States [cm.
The high conductivity and wide bandgap make this an ideal material for making optically transparent conducting films which could be used in a wide variety of electronic devices, including high power electronics, electronic displays, touchscreens and even solar cells in which light needs to pass through the device," Jalan said.
In this paper we propose a modified mushroom like Electromagnetic Bandgap structure to enhance the antenna radiation by suppressing the surface wave.
Hao, Zhang, and Zhang present readers with a comprehensive examination of the physical characteristics and potential implementations and applications of III-nitride wide bandgap semiconductor materials and electronic devices.
Projects that lower the cost and increase the availability of wide bandgap power electronic devices by increasing gallium nitride (GaN) and silicon carbide (SiC) foundry capacity.
As CuBO2 delafossite is a transparent conducting oxide with a wide bandgap and may have potential applications as transparent electrodes and in other opto-electronic devices.
It has a relatively benign chemical nature, a deep excitonic energy level, and a direct bandgap of ~ 3.
Some of these include the creation of semiconductor nanowires, droplet epitaxy of complex 3D nanostructures, optoelectronics, semiconductor bandgap engineering, thin films of semiconductor and organic materials, complex oxides, ferromagnetic semiconductors, multilayer films, spintronics, quantum dots, the creation of graphene, the use of fullerene dopants, and transparent semiconducting oxides among other things.
Electromagnetic bandgap (EBG) structure derived from the photonic bandgap (PBG) structure is a kind of periodic unit composed of metal and dielectric [5].
These periodic structures are known as photonic bandgap (PBG) or photonic crystals in optical sciences and have been used for controlling light.
The structure with this characteristic is called electromagnetic bandgap structures-EBG.
The periodic structure such as an EBG structure can be used to prevent propagation of electromagnetic waves in bandgap (stop band) region.