CdSe nanocrystals were synthesized in inverse micellar solution and then assembled on aluminum surface by bifunctional linker molecules. High resolution transmission electron microscope (HRTEM) photographs show that nanocrystals with uniform sizes were bound to aluminum and in some regions a structure of hexagonal close-packed was formed. Atomic force microscopy (AFM) and electron diffraction (ED) results confirmed the formation of this CdSe nanocrystal monolayer on aluminum substrate.