Abstract by Jason Calvin
Chemistry and Biochemistry
Heat Capacity of Amorphous Silicon Films
Amorphous silicon films with low dielectric constants can be synthesized with different properties and stabilities by varying their composition. Heat capacity measurements on these materials can provide insights on their stability and properties. Using a commercial relaxation calorimeter, accurate heat capacity measurements were made on powdered samples between 1.8 and 300 K. The heat capacity data can be fit to theoretical functions that reveal information about the lattice dynamics of these materials, and by comparing the heat capacities of these materials to each other the effects of differing compositions can be revealed. In this presentation, the experimental theory and instrumentation will be introduced, and the data collected on four silicon films will be presented and discussed both qualitatively and quantitatively.