CAREER NETWORK World's one of the largest Research Career Network Benefits Academic & Industry jobs Project funding Visiting faculty positions Visiting scientist positions Invited talks and more... Register FREE Physics Express 2012, 2: 20 Research Article Exciton states in quasi - zero - dimensional semiconductor nanosystems: Theory Sergey I. Pokutnyi G. V. Kurdiumov Institute for Metal Physics, National Academy of Sciences of Ukraine, 36 Acad. Vernadsky Boul., UA – 03680, Kyiv – 142, Ukraine Abstract In the context of the newly modified effective mass approach, in which the reduced exciton effective mass µ=µ(a) is a function of the radius a of the semiconductor quantum dot (QD), an expression for the exciton energy spectrum in quasi – zero – dimensional semiconductor nanosystem is derived. Keywords Electron; Hole; Exciton; Effective mass; Quantum dots; Exciton energy spectrum; Coulomb and polarization interaction