摘要
In this paper, the conduction band-edge non-parabolicity （NP） and the circular cross-section radius effects on hydrogenie shallow-donor impurity ground-state binding energy in zinc-blende （ZB） InGaN/GaN cylindrical QWWs are reported. The finite potential barrier between （In,Ga）N web and CaN environment is considered. Two models of the conduction band-edge non-parabolicity are taking into account. The variational approach is used within the framework of single band effective-mass approximation with one-parametric 1S-hydrogenic triaJ wave-function. It is found that NP effect is more pronounced in the wire of radius equal to effective Bohr radius than in large and narrow wires. Moreover, the binding energy peak shifts to narrow wire under NP effect. A good agreement is shown compared to the findings results.
