The influence of forms and sizes of heterogeneous systems on the band bending in AgBr-AgI

Nonideal heterojunction of AgBr-AgI has been considered. The Poisson equations for heterojunction in planar, spherical and cylindrical geometries have been solved in linear approximation. The expressions for band bending of heterojunctions are derived. Calculations of band bending vs. the size, forms of the core and the surface charge on the interface have been carried out.