| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2017: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2016: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2015: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
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| Outline of Final Research Achievements |
Enhancement of photo-absorption of perovskite solar cells around 600-800 nm, where lower external quantum efficiency had been reported, was intended by the introduction of organic dyes. However, the improvement in the preparation method of the perovskite layer enhanced the photo-absorption of perovskite itself, making no room for the enhancement by organic dyes in terms of their performance. Adsorption of organic molecules over the under-layer of the perovskite layer improved solar cell performances in some cases. The improvement in solar cell performances may be derived from the improvement in interfacial contacts, indicating that those organic molecules on TiO2 layer can work as surface functionalizing molecules. The results will contribute for the enhancement of device performances of perovskite solar cells.
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