Effect of pressure and electron–phonon interaction on optical properties of GaN triangular quantum wires

Khordad, R.; Bahramiyan, H.

doi:10.1007/s11082-015-0244-9

Cited by 5 publications

(3 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This was due to the doped layer placed in front of the quantum well. Our results are in good agreement with references [22,[40][41][42]. Figure 3 shows the evolution of the Fermi level as a function of doping concentration.…”

Section: Introductionsupporting

confidence: 90%

GaAs quantum well in the non-parabolic case: the effect of hydrostatic pressure on the intersubband absorption coefficient and the refractive index

Chrafih¹,

Moudou²,

Rahmani³

et al. 2019

Eur. Phys. J. Appl. Phys.

View full text Add to dashboard Cite

We investigated the effect of the hydrostatic pressure on the optoelectronic properties of a quantum well (QW) based on δ-doped GaAs sandwiched by Ga1-xAlxAs. We study the case of a non-parabolic conduction band where the aluminum content is set at 30%. We perform our calculations in the context of the approximation of the envelope function formalism using the finite difference method. Results show that the transition energies decrease with the increase of the hydrostatic pressure, which causes remarkable modifications on the optical properties of the QW nanostructure. The non-parabolicity effect is more important for small QW (Lw ≤ 5nm) and less marked in narrow and large QW. In addition, we study the absorption coefficient for 8 nm/4 nm/8 nm geometry. On the one hand, the pressure increase creates a displacement of the optical absorption coefficient towards low energies and a decrease of the absorption peak value. On the other hand, the refractive index moves towards higher energies. We show that in the presence of a hydrostatic pressure and following its effect on intersubband transitions, these optical properties also depend on the dopant concentration rate and the quantum well width. Our study finds interests for the nano-fabrication of quantum wells and in particular for those used in optical and electronic applications.

show abstract

Section: Introductionsupporting

confidence: 90%

GaAs quantum well in the non-parabolic case: the effect of hydrostatic pressure on the intersubband absorption coefficient and the refractive index

Chrafih¹,

Moudou²,

Rahmani³

et al. 2019

Eur. Phys. J. Appl. Phys.

View full text Add to dashboard Cite

show abstract

“…Since the optical properties [Eqs. (28) to (34)] depend strongly on the energy difference and dipole matrix elements, we first the quantities with considering the pressure and polaron effects.…”

Section: Resultsmentioning

confidence: 99%

“…For example, Li et al [27] have considered the e-p and pressure effects on surface states in quantum wells. The reader can refer to [28][29][30][31][32][33][34].…”

Section: Introductionmentioning

confidence: 99%

High pressure and polaron effects on optical properties of GaN wedge-shaped quantum dot

2022

View full text Add to dashboard Cite

In the paper, the optical properties of GaN wedge-shaped quantum dot (WSQD) under influence both pressure and electron-phonon (e-p) interaction have been investigated. To this end, the energy difference and dipole matrix elements are evaluated by considering the effects of e-p and pressure. Then, the refractive index changes (RICs) and absorption coefficients (ACs) are evaluated. It is deduced that the energy difference and dipole matrix elements reduce by considering the e-p and pressure effects. It is resulted that the pressure enhances the e-p effect on the energy difference. The ACs and RICs move to lower energies by considering the ep and pressure effects. The RICs and ACs are raised in the presence of e-p effect whereas they are reduced with considering the pressure. With considering the e-p and pressure effects on total ACs, it is seen that the peak of AC splits into two peaks.

show abstract

Effects temperature, pressure and spin–orbit interaction simultaneously on third harmonic generation of wedge-shaped quantum dots

Khordad

Vaseghi

2019

Chinese Journal of Physics

View full text Add to dashboard Cite

Effect of pressure and electron–phonon interaction on optical properties of GaN triangular quantum wires

Cited by 5 publications

References 45 publications

GaAs quantum well in the non-parabolic case: the effect of hydrostatic pressure on the intersubband absorption coefficient and the refractive index

GaAs quantum well in the non-parabolic case: the effect of hydrostatic pressure on the intersubband absorption coefficient and the refractive index

High pressure and polaron effects on optical properties of GaN wedge-shaped quantum dot

Effects temperature, pressure and spin–orbit interaction simultaneously on third harmonic generation of wedge-shaped quantum dots

Contact Info

Product

Resources

About