Patent ID: 7799637

Claim:
A method for fabricating non-volatile storage, comprising: creating a floating gate stack on a substrate including creating a floating gate, said floating gate is conductive, creating a control gate and creating an ONO dielectric region between said floating gate and said control gate, said creating said ONO dielectric region includes using a deposition process to create at least a nitride layer of said ONO dielectric region, said creating said ONO dielectric region includes using atomic layer deposition to create a first oxide layer on one side of said nitride layer and using atomic layer deposition to create a second oxide layer on a second side of said nitride layer, said nitride layer is thinner than said first oxide layer and thinner than said second oxide layer, said first oxide layer, said nitride layer and said second oxide layer have relative thicknesses of approximately 5:2:5; creating a sidewall for said floating gate stack including depositing a sidewall oxide layer using atomic layer deposition and depositing a sidewall nitride layer using atomic layer deposition; and forming source/drain regions in said substrate prior to completing said creating of said sidewall.