Protein-Mediated Nanocrystal Assembly for Flash Memory Fabrication

For the first time, we demonstrate that a chaperonin protein lattice can be used as a template to assemble nanocrystal (NC) arrays for Flash memory fabrication. This provides a new approach that can incorporate different types of NCs from a colloidal suspension for Flash memory fabrication. Lead selenide and cobalt NC assemblies achieved through this method have a high density of 9.5times10 11 /cm 2 and 1.6times10 12 /cm 2 , respectively, as well as good distribution uniformity. Devices exhibit promising Flash memory functions, with a flatband shift of 0.5 under 8-V operation, endurance >10 5 cycles, and retention time >10 4 s