energy band theory 能带学说 energy band 能带,能量带 band theory 能带理论 band overlap energy 能带重叠能量 band edge energy 带边能量 allowed energy band 容许能带 energy band structure 能带结构 band gap energy 带隙能 energy band tail (能)带尾 electron energy band 电子能带 相似...
In silicon the zone boundary optical gaps and the valence band width are predicted very accurately while a 0.24 eV discrepancy remains in the indirect gap. In diamond the valence band width and fundamental direct and indirect gaps are within 5% of the experimental values....
An analytical model of the band gap narrowing (BGN) in silicon was derived from a non-self-consistent finite-temperature full random-phase approximation (R... Schenk,Andreas - 《Journal of Applied Physics》 被引量: 243发表: 1998年 Density functional theory and the band gap problem How can ...
8.ENERGYBANDTHEORY. Aim:Tounderstandtheeffectsoftheperiodicpotentialincrystallinematerialsontheelectronic statesandelectrondynamics.Wealsotreatthephysicalbasisofthedifferencebetweeninsulators, semiconductorsandmetals. InthepreviousLecturewetreatedtheouterelectronsasfreelymovinginaboxpotential.In reality,however,theperiodici...
We present measurements of the two-photon absorption coefficients beta(2) of 10 different semiconductors having band-gap energies between 1.4 and 3.7 eV. We find that beta(2) varies as E(g)(-3), as predicted by theory. In addition, the absolute values of beta(2) agree with theory, whic...
In the present study, the physical properties of polythiophene (PTH) and its derivative systems (PTs) were investigated as π-conjugated low energy band gap polymers. Density functional theory with periodic boundary condition (PBC), the B3LYP functional, and the 6-31G(d) basis set was applied...
Experimental data indicating that the band gap of Zn-O-S solid solutions decreases appreciably in accordance with the theory of noncrossing energy bands ar... NK Morozova,IA Karetnikov,KV Golub,... - 《Semiconductors》 被引量: 29发表: 2005年 The pressure dependence of the band-gap excitons...
The correlated function expansion (CFE) methodology has been used to estimate the energy band gap and the alloy bond length of Zn_(1-x)Mg_xSe_yTe_(1-y) over the entire composition space (x, y). The lattice matching condition was obtained by optimizing the alloy bond length to the bond...
3.1 The semiconductor band-gap The semiconductor band-gap, also known as the optical-gap, energy-gap or mobility-gap, is an important property of semiconductors that determines the optoelectronic properties of devices created from such semiconductors. The band-gap is the minimum amount of energy ne...
Strain-induced large band-gap topological insulator in a new stable silicon allotrope: dumbbell silicene By the generalized gradient approximation in framewok of density functional theory, we investigate a 2D topological insulator of new silicon allotrope (cal... Z Tian,C Yan,XR Chen,... - 《Phy...