band gap


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band gap

[′band ‚gap]
(solid-state physics)
An energy difference between two allowed bands of electron energy in a metal.
References in periodicals archive ?
If we compare these regions in Figure 2 with their correspondent's in Figure 3, we can observe that exactly anywhere the real part of input impedance is zero, the band gap occurs.
Band gap energy and transition type can be derived from mathematical treatment of data obtained from optical absorbance versus wavelength with Stern [18] relationship of near-edge absorption (Equation 1):
When these dried films were sintered, their reflection spectra exhibited only one sharp fall, which corresponds to the band gap of solid solution CdS-ZnS.
The band gap in conjugated oligomers is governed by their chemical structures.
For instance, the NREL team finds that in lead selenide dots, a photon must have at least two and a half band gaps of energy to produce two exeitons.
6 V internal band gap, which allows output voltages from 85 percent of Vin down to 0.
By exploring novel semiconductor materials and applying band structure engineering, via strain-balanced quantum wells, the NRL research team has produced a design for a MJ solar cell that can achieve direct band gaps from 0.
Tenders invited for Supply and warranty of ambient pressure photoemission spectroscopy system with scanning probe plus surface photovoltage and surface photovoltage spectroscopy for the measurement of work function, lonisation potential, fermi energy, local density of states, highest occupied metallic orbital, band gap, open circuit voltage, surface photo voltage.
2] Young et al reported that the optical band gap in free standing transparent ZnO films can be reduced with dopant Sn using the Sol-gel method.
The energy band gap of the prepared films was calculated and the effect of gamma radiation on its value was determined.
CORRELATION OF BAND GAP ENERGIES IN VISIBLE SPECTRUM AND SILICON TO SOLAR CELL EFFICIENCY.