interaction and correlation effects in quantum dots play a fundamental role in defining both their equilibrium and transport properties. numerical methods are commonly employed to study such systems. in this paper we investigate the numerical calculation of quantum transport of electrons in spherical centered defect ingaas/algaas quantum dot (scdqd). the simulation is based on the imaginary time...

We use aerosol techniques to investigate the cohesive and granular properties of solids composed of colloidal semiconductor nanocrystals (quantum dot solids). We form spherical agglomerates of nanocrystals with a nebulizer and direct them toward a carbon substrate at low (~0.01 m/s) or high (~100 m/s) velocities. We then study the morphology of the deposit (i.e., the "splat") after impact. By v...

Electron-hole exchange interaction provides transverse (T) and longitudinal (L) characters of exciton. In homogeneous bulk crystal, exciton states are classified into T and L modes, and the T-mode exciton is optically active. However, T-mode exciton confined in quantum dot is optically forbidden. We classify exciton states confined in spherical and cylindrical quantum dots into L, T, and LT-mix...

Contents 1. Introduction 2. Electronic states in a weakly oblated ellipsoidal quantum dot (impermeable walls). 3. The model of finite deep rectangular ellipsoidal well 4. Strongly oblated ellipsoidal quantum dot 5. Strongly prolated ellipsoidal quantum dot 6. Electronic states in a cylindrical quantum dot having elliptical lens shaped cross section 7. Electronic states in a cylindrical quantum ...

Taking into account the tetrahedral shape of a quantum-dot quantum well (QDQW) when describing excitonic states, phonon modes, and the exciton-phonon interaction in the structure, we obtain within a nonadiabatic approach a quantitative interpretation of the photoluminescence spectrum of a single CdS/HgS/CdS QDQW. We find that the exciton ground state in a tetrahedral QDQW is bright, in contrast...

The binding energy of a donor in spherical quantum dots (QDs) is calculated, using a variational approach within the effective mass approximation. The binding energy is computed for GaAs QD as a function of the dot size for different impurity positions, and also as a function of the impurity position for different dot sizes. The results of mine show that when the impurity binding energy increas...