2005 Fiscal Year Final Research Report Summary
Development of Vertical Junction Type Organic Solid-State Solar Cells
| Project/Area Number |
16560007
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Applied materials science/Crystal engineering
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| Research Institution | Osaka University |
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Principal Investigator |
HIRAMOTO Masahiro Osaka University, Graduate School of Engineering, Associate professor, 大学院工学研究科, 助教授 (20208854)
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| Project Period (FY) |
2004 – 2005
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| Keywords | Vertical junction type organic solar cells / co-deposited film / p-i-n energetic structure / conversion efficiency of 2.5% / nanostructure control / spatial separation of photogenerated carriers / large area cell / prevention of electrical shorting |
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| Research Abstract |
Vertical junction type organic photovoltaic cells having a pn junction formed perpendicularly to a light irradiated surface were fabricated. Short-circuit photocurrent density of 8.5 mA/cm^2 were observed under simulated solar illumination.
Three-layered organic solar cells incorporating a codeposited interlayer of fullerene and metal-free phthalocyanine, whose nanostructure was optimized by controlling the substrate temperature during coevaporation, showed a photoelectric conversion efficiency of 2.5%.
10 cm^2 area molecular photovoltaic cells have been fabricated incorporating transparent protection layer of naphthalene tetracarboxylic anhydride (NTCDA) which completely suppress electrical shorting.
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