Patent ID: 8080485

Claim:
A method of forming a semiconductor structure comprising: providing a substrate; forming, above a first section of said substrate, at least one first device, a first trench isolation region positioned laterally adjacent to said first device, and a plurality of discrete first fill structures adjacent to and in contact with a first top surface of said first trench isolation region and, above a second section of said substrate, at least one second device, a second trench isolation region positioned laterally adjacent to said second device and a plurality of discrete second fill structures adjacent to and in contact with a second top surface of said second trench isolation region, said first section and said second section being in entirely different locations above said substrate, said discrete first fill structures in said first section being formed in a first pattern such that a first amount of an isolation material at said first top surface of said first trench isolation region is exposed, said discrete second fill structures in said second section being formed in a second pattern such that a second amount of said isolation material at said second top surface of said second trench isolation region is exposed, said second pattern being different from said first pattern, said second amount being different from said first amount, and said first amount and said second amount being predetermined so that said first section has first reflectance and absorption characteristics and said second section has second reflectance and absorption characteristics, said first reflectance and absorption characteristics and said second reflectance and absorption characteristics being predetermined based on said first amount and said second amount, respectively, and further being selectively different; and performing a rapid thermal anneal, said first reflectance and absorption characteristics ensuring that a first predetermined maximum temperature is achieved in said first section during said rapid thermal anneal and said second reflectance and absorption characteristics ensuring that a second predetermined maximum temperature is achieved in said second section during said rapid thermal anneal, said first predetermined maximum temperature being different from said second predetermined maximum temperature.