| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2015: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2013: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
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| Outline of Final Research Achievements |
To aim development of transparent conductors and high-efficiency electron emitters without rear metals such as indium, high quality bulk single crystals of transition metal or rear-earth metal doped calcium aluminate C12A7 were grown, and the element-doping effects on the electrical properties in the electrides prepared using the grown crystals were investigated.
As the results, crystal growth by the traveling solvent floating zone (TSFZ) method with control of solid-liquid interface led to control dopant concentration in single crystals of transition metal or rear-earth metal doped C12A7. It was found that the rear-earth metal doping is effective on improvement of electrical conductivity in C12A7 electrides even though the solubility into C12A7 is very low.
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