Patent ID: 6187392
Filing Date: 2001-02-13
Classification: C23C

Abstract:
A chemical vapor deposition process comprising the steps of:positioning a target within a chamber, said target comprising CVD precursor particles, said CVD precursor particles having a characteristic precursor particle vaporization temperature;transferring heat energy to a selected target area of said target to induce a predetermined temperature increase in said selected target area, wherein said predetermined temperature increase is characterized by a predetermined heating rate, and wherein said predetermined heating rate is selected such that said heat energy causes the desorption of at least one CVD precursor particle to define a precursor desorption region and such that a substantial portion of said heat energy is not transferred to the internal energy modes of said CVD precursor particle, whereby said transfer of heat energy to said selected target area induces said predetermined temperature increase in said selected target area without raising the temperature of precursor particles within said selected target area to said characteristic precursor particle vaporization temperature; andpositioning a deposition substrate in particulate communication with said precursor desorption region.