| Budget Amount *help |
¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2014: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2013: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2012: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Outline of Final Research Achievements |
In this research, we have studied the control of plasma potential in the High Power Pulsed Magnetron Sputtering (HPPMS) technique. By this, incident energy of ionized species, produced in the high density plasma of HPPMS, to the grounded substrate could be modified, resulting in the densified film structure with flat surfaces. At the beginning of this research, we intended to achieve this by modifying the target voltage waveform, but a more efficient technique, triode HPPMS, has been invented. By applying positive voltage to the third electrode, plasma potential could be controlled during both on and off periods of HPPMS, which extracted full benefits from the ionized plasma. The very flat surface structure could be achieved when Cu films were deposited by this method on water-cooled substrate. It was also found to be efficient for the fabrication of Mo micro emitters, which required normal incidence of depositing species as well as their energy control to suppress the film stress.
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