| Budget Amount *help |
¥17,290,000 (Direct Cost: ¥13,300,000、Indirect Cost: ¥3,990,000)
Fiscal Year 2017: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2016: ¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Fiscal Year 2015: ¥9,230,000 (Direct Cost: ¥7,100,000、Indirect Cost: ¥2,130,000)
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| Outline of Final Research Achievements |
In order to further develop researches on CVD diamond having the large functionality, we have studied on (1) a substantial suppression of the abnormal decrease in the carrier mobility with increasing dopant densities and (2) development of a new microwave plasma (MWP) CVD apparatus. The following research results have been attained.(1) By embedding multiple-layered heavily-doped degenerate thin diamond layers which are suitably etched to be isolated each other as innumerable clusters to into lightly-doped CVD diamond, the activation energy of the concerned dopants can be decreased successfully with a suppressed (abnormal) reduction in the macroscopic carrier mobility. In this case, the important factors include both the uniformity of the size and two-dimensional periodicity of the clusters formed.(2) A prototype of the MWPCVD with a tapered reaction chamber that is appropriately designed has been developed. Both high-quality diamond growth and large area growth are expected for it.
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