Patent ID: 7368014

Claim:
A deposition method comprising: at a first temperature, contacting a substrate with a first precursor containing dichlorosilane and chemisorbirig a first layer at least one monolayer thick over the substrate; altering the first temperature by removing heat by applying an electric currant through a cold junction of two dissimilar conductors or doped semiconductors of a thermoelectric heat pump thermally connected-to the substrate, transferring the current to a hot junction of the conductors or semiconductors, and dissipating heat from the hot junction to establish a second temperature; at the second temperature lower than the first temperature, contacting the first layer with a second precursor containing ammonia and chemisorbing a second layer at least one monolayer thick on the first layer; and reacting the second layer with the first layer and forming a Si 3 N 4 layer.