Organic molecular alloy for organic solar cells
| Project/Area Number |
26620203
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Device related chemistry
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| Research Institution | The University of Tokyo |
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Principal Investigator |
Hideyuki Tanaka 東京大学, 新領域創成科学研究科, 特任講師 (10585821)
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| Project Period (FY) |
2014-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2015: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2014: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Keywords | 有機エレクトロニクス / 有機太陽電池 / 分子合金 / ポルフィリン / 固溶体 / フラーレン / ペロブスカイト |
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| Outline of Final Research Achievements |
A molecular alloy forms when two porphyrins are generated in a matrix of fullerene. This molecular alloy provides structural and optoelectronic properties entirely different from those of either pristine compounds or a mixture at other blending ratios. The use of this molecular alloy for organic solar cell devices resulted in a power conversion efficiency value higher by 300% than the PCE values obtained for the devices using the single donor porphyrins, in a planar-heterojunction architecture. This increase originates largely from the increase in short circuit current density, and hence by enhanced charge carrier separation at the donor/acceptor interface, which was probably caused by suitable energy level for the solid solution state, where electronic coupling between the two porphyrins occurred. The results suggest that physical and chemical modulation in solid solution is beneficial as an operationally simple method to enhance solar cell performance.
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Report
(3 results)
Research Products
(13 results)
