| Budget Amount *help |
¥14,690,000 (Direct Cost: ¥11,300,000、Indirect Cost: ¥3,390,000)
Fiscal Year 2016: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2015: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2014: ¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
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| Outline of Final Research Achievements |
The fabrication of advanced solar cells with a high efficiency and wide application is desired. This study investigates the low-temperature synthesis of Ge thin films on plastic substrates for realizing high-efficiency flexible tandem thin film solar cells.
We successfully fabricated a large-grained Ge (111) thin film on plastic substrate using “metal-induced layer exchange” according to the initial project plan. Moreover, we investigated solid-phase crystallization without using metal catalysts. As a result, we fabricated a high-quality polycrystalline Ge thin film at low temperature by controlling the atomic density of the precursor amorphous Ge thin film. Thus, this study resulted in Ge thin films of the highest quality as a bottom cell for flexible tandem solar cells.
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