The energy of a hydrogenic impurity in GaN/Al_xGa_(1-x)N compositional parabolic quantum well(PQW) is investigated by variational method.

The ground state and binding energy of a hydrogenic impurity as functions of the electric field and well width in a GaAs/Al_xGa_ 1-xAs PQW are investigated with the variational method.

Effects of hydrogenic impurity on localized excitons in In_xGa_(1-x)N/GaN quantum dots;

The binding energy and the photon energy dependence of the photoionization cross-section are calculated for a hydrogenic impurity in GaAs/Ga 1-xAl xAs quantum well wires.

Binding energy of a hydrogenic-like impurity in GaN/Al_xGa_(1-x)N quantum dots;

Concerning the domino effect of the built-in electric field and the three-dimension confinement,exciton states with hydrogenic-like impurity confined in GaN/AlxGa1-xN quantum dots(QDs) are studied by means of a variational approach within the framework of effective-mass approximation.

Studied the binding energies of a hydrogenic-donor impurity in a cylindrically symmetric GaAs/GaAlAs-coupled quantum disk in the presence of a uniform magnetic field for different disk and barrier thicknesses,disk radii,and donor ion positions within the disk.

We report the binding energies of a hydrogenic-donor impurity in a cylindrically symmetric GaAs/Ga_(0.

Effects of hydrogenic donor impurity position on the binding energy of a bound exciton in Ⅲ-nitrides quantum dots;

Two steps temperature programmable mode with PLOT Al2O3"S" capillary column,splitless stream sampling and FID detector are adopted to measure the purity of alpha-butylene and content of other hydrocarbon impurity.