Patent ID: 7871886
Filing Date: 2011-01-18
Classification: B82Y,H01L

Abstract:
1. A method of making a semiconductor device using a semiconductor substrate, comprising: forming a first insulating layer having a first band energy over the semiconductor substrate; forming a first semiconductor layer having a second band energy on the first insulating layer; annealing the first semiconductor layer to form a plurality of first charge retainer globules from the first semiconductor layer; forming a first protective film over each charge retainer globule of the plurality of first charge retainer globules; forming a second semiconductor layer having a third band energy over the plurality of first charge retainer globules; and annealing the second semiconductor layer to form a plurality of storage globules from the second semiconductor layer over the plurality of first charge retainer globules; wherein a magnitude of the second band energy is between a magnitude of the first band energy and a magnitude of the third band energy.