关于日本东京大学 Yutaka Matsuo 教授学术报告的通知
2013-11-15
132
关于日本东京大学 Yutaka Matsuo 教授
学术报告的通知
报告题目： Functionalization of Fullerenes for High-performance Organic Solar Cells
报告人：日本东京大学 Yutaka Matsuo 教授
时间：2013年11月22日 （周五）上午10:00
地点：光电楼二楼大教室
报告人简历：
摘要：
Development of organic thin-film photovoltaic cells have become important subjects because those devices are expected to provide renewable energy technology. Fullerenes are commonly used as photoelectrochemically active materials in organic electronic devices due to their high electron affinity that enables efficient photoinduced electron transfer and charge separation. To achieve efficient and mechanistically well-defined photo-energy conversion, rational design of fullerene derivatives and construction of their ordered supramolecular structures in solid states as well as on surface are of importance. Herein we report design of new fullerene derivatives and their application to organic photovoltaic devices.
Functionalized fullerenes are obtained by chemical modifications of fullerenes. Photoelectronic functions of fullerene derivatives mainly depend on the size and shape of their π-electron conjugated systems, which can be modified by the change of number and position of organic addends on the fullerene core. Alternatively, attaching transition metal atoms to the fullerene core can change photoelectronic properties. In addition, one can construct desired supramolecular organized structure of fullerene derivatives by changing organic substituents.
In order to develop efficient electron-accepting materials for organic solar cells, we have developed various methods for the efficient synthesis of organic functionalized fullerene derivatives. In this talk I will disclose a recently developed new synthetic method to obtain dihydromethano[60]fullerene derivatives that have the smallest carbon addend, methylene group (CH2) and that showed high voltage and high power conversion efficiency in organic solar cells.
References:
1. Y. Matsuo,* Y. Sato,* T. Niinomi, I. Soga, H. Tanaka, E. Nakamura,* Columnar Structure in Bulk Heterojunction in Solution-processable Three-layered p-i-n Organic Photovoltaic Devices Using Tetrabenzoporphyrin Precursor and Silylmethyl[60]fullerene, J. Am. Chem.Soc. 2009, 131, 16048.
2. Y. Matsuo,* J. Hatano, T. Kuwabara, K. Takahashi, Fullerene Acceptor for Improving Open-Circuit Voltage in Inverted Organic Photovoltaic Devices without Accompanying Decrease in Short-Circuit Current Density, Appl. Phys. Lett. 2012, 100, 063303.
3. Y. Santo, I. Jeon, K. S. Yeo, T. Nakagawa, Y. Matsuo*, Mixture of [60] and [70]PCBM Giving Morphological Stability in Organic Solar Cells, Appl. Phys. Lett. 2013, 103, 073306.
4. Y. Matsuo,* J. Kawai, H. Inada, T. Nakagawa, H. Ota, S. Otsubo, E. Nakamura*, Addition of Dihydromethano Group to Fullerenes for Improving the Performance of Bulk Heterojunction Organic Solar Cells, Adv. Mater. 2013, in press. [DOI: 10.1002/adma.201302607]
Development of organic thin-film photovoltaic cells have become important subjects because those devices are expected to provide renewable energy technology. Fullerenes are commonly used as photoelectrochemically active materials in organic electronic devices due to their high electron affinity that enables efficient photoinduced electron transfer and charge separation. To achieve efficient and mechanistically well-defined photo-energy conversion, rational design of fullerene derivatives and construction of their ordered supramolecular structures in solid states as well as on surface are of importance. Herein we report design of new fullerene derivatives and their application to organic photovoltaic devices.
Functionalized fullerenes are obtained by chemical modifications of fullerenes. Photoelectronic functions of fullerene derivatives mainly depend on the size and shape of their π-electron conjugated systems, which can be modified by the change of number and position of organic addends on the fullerene core. Alternatively, attaching transition metal atoms to the fullerene core can change photoelectronic properties. In addition, one can construct desired supramolecular organized structure of fullerene derivatives by changing organic substituents.
In order to develop efficient electron-accepting materials for organic solar cells, we have developed various methods for the efficient synthesis of organic functionalized fullerene derivatives. In this talk I will disclose a recently developed new synthetic method to obtain dihydromethano[60]fullerene derivatives that have the smallest carbon addend, methylene group (CH2) and that showed high voltage and high power conversion efficiency in organic solar cells.
References:
1. Y. Matsuo,* Y. Sato,* T. Niinomi, I. Soga, H. Tanaka, E. Nakamura,* Columnar Structure in Bulk Heterojunction in Solution-processable Three-layered p-i-n Organic Photovoltaic Devices Using Tetrabenzoporphyrin Precursor and Silylmethyl[60]fullerene, J. Am. Chem.Soc. 2009, 131, 16048.
2. Y. Matsuo,* J. Hatano, T. Kuwabara, K. Takahashi, Fullerene Acceptor for Improving Open-Circuit Voltage in Inverted Organic Photovoltaic Devices without Accompanying Decrease in Short-Circuit Current Density, Appl. Phys. Lett. 2012, 100, 063303.
3. Y. Santo, I. Jeon, K. S. Yeo, T. Nakagawa, Y. Matsuo*, Mixture of [60] and [70]PCBM Giving Morphological Stability in Organic Solar Cells, Appl. Phys. Lett. 2013, 103, 073306.
4. Y. Matsuo,* J. Kawai, H. Inada, T. Nakagawa, H. Ota, S. Otsubo, E. Nakamura*, Addition of Dihydromethano Group to Fullerenes for Improving the Performance of Bulk Heterojunction Organic Solar Cells, Adv. Mater. 2013, in press. [DOI: 10.1002/adma.201302607]
