Patent ID: 7091130

Claim:
A method of forming a nanocluster charge storage device, comprising: providing a substrate having a first dopant well associated with the nanocluster charge storage device and a second dopant well associated with a semiconductor device not having nanoclusters; forming a first gate stack overlying the first dopant well and having a first conductive gate material layer that forms a gate electrode in the first gate stack, the first conductive gate material layer overlying a plurality of nanoclusters embedded in a first gate dielectric layer, the first conductive gate material layer underlying a portion of a second conductive gate material layer; and forming a second gate stack overlying the second dopant well using a portion of the second conductive gate material layer overlying the second dopant well as a gate electrode in the second gate stack, a portion of the second conductive gate material layer that overlies the first conductive gate material layer is removed.