2011 Fiscal Year Final Research Report
Generation and Relaxation Dynamics of Multiple Excitons in Semiconductor Quantum Dots Adsorbed on Electrodes
| Project/Area Number |
21310073
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Nanomaterials/Nanobioscience
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| Research Institution | The University of Electro-Communications |
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Principal Investigator |
SHEN Qing 電気通信大学, 大学院・情報理工学研究科, 助教 (50282926)
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| Project Period (FY) |
2009 – 2011
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| Keywords | ナノ機能材料 / 量子ドット / 多重励起子生成 / 太陽電池 |
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| Research Abstract |
In this study, semiconductor QDs were used as light harvesters in sensitized nanocrystalline TiO2 solar cells. The energy conversion efficiency is expected to be improved by(1) modifying and controlling the nano-interfaces in the semiconductor QDs sensitized solar cells and(2) finding the optimized experimental conditions for high efficient in semiconductor QDs. We have found that photovoltaic performances can be improved greatly by applying surface modification, ordered nanostructured TiO2 electrodes, and co-sensitization of QDs. We have succeeded in measuring the multiple exciton generation(MEG) and relaxation dynamics in PbS QDs.
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