Fullerene-based nano-structured materials and solar cells

富勒烯基纳米结构材料和太阳能电池

• 批准号: 15360175
• 负责人: KOJIMA Nobuaki
• 金额: $ 5.06万
• 依托单位: Toyota Technological Institute
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2003
• 资助国家: 日本
• 起止时间: 2003 至 2005
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-15360175/
• 关键词: fullerene; superlattice structure; nano-structure; solar cell; amorphous carbon; phthalocyanine; carbon; hydrogen radical; 光起電力; 薄膜

The aim of this research is (1)development of structure control technique of C_<60>/a-C superlattice structures, (2)characterization of optical and electrical properties of the superlattice structures for solar cell applications, (3) basic investigation of organic solar cells using C_<60>-based nano-structures.1.a-C layer was formed by the irradiation of nitrogen radicals from rf plasma source onto C_<60> layer. We found that the character of the resulted a-C films depended on the flux of nitrogen ions.2.We observed the blue shift of light absorption edge in C_<60>/a-C superlattice structures with the thinner a-C well thickness, and suggested that the effective band gap energy could be controlled by the superlattice structure.3.The solar cells with _C_<60>/a-C superlattice structure as i-layer sandwiched between p-a-SiC and n-a-Si were fabricated. The cell showed low efficiency of 10^<-6>-10^<-5>%. To increase the cell efficiency, the conductivity control by impurity doping and the reduction of defect density in a-C layer are necessary.4.Mg-doping in C_<60> films was investigated to control the conductivity. The resistivity of Mg-doped C_<60> films deposited by the co-evaporation method reduced in 6 orders of magnitude.5.The hydrogen treatment of a-C films was investigated to reduce defect density. ESR spin defect density much depended on the hydrogen treatment time, which was necessary to optimize.6.The C_<60>/organic molecules hetero interface was investigated for organic solar cells using C_<60>-based nano-structures. It was confirmed that Copper-Phthalocyanine was deposited with standing molecular plane onto the C_<60>(111) surface.

本研究的目的是（1）开发C_<60>/a-C超晶格结构的结构控制技术，（2）表征用于太阳能电池应用的超晶格结构的光学和电学性质，（3）使用C_<60>基纳米结构的有机太阳能电池的基础研究。 1.a-C层是通过从射频等离子体源照射氮自由基形成的 C_<60>层。我们发现所得a-C薄膜的特性取决于氮离子的通量。2.我们观察到a-C阱厚度较薄的C_<60>/a-C超晶格结构中光吸收边的蓝移，表明有效带隙能可以通过超晶格结构来控制。3.以_C_<60>/a-C超晶格结构作为i层夹在中间的太阳能电池 制备了 p-a-SiC 和 n-a-Si。该电池表现出10^<-6>-10^<-5>％的低效率。为了提高电池效率，必须通过杂质掺杂来控制电导率，并降低a-C层的缺陷密度。4.研究了C_<60>薄膜中Mg掺杂对电导率的控制。共蒸发法沉积的Mg掺杂C_<60>薄膜的电阻率降低了6个数量级。5.研究了氢处理a-C薄膜降低缺陷密度的方法。 ESR自旋缺陷密度在很大程度上取决于氢处理时间，这是优化所必需的。6.利用C_<60>基纳米结构研究了有机太阳能电池的C_<60>/有机分子异质界面。证实铜-酞菁以直立的分子平面沉积在C_ 60 (111)表面上。

项目成果

Interface Structures Analysis between C_(60)and CuPc for Organic Solar Cells

有机太阳能电池C_(60)与CuPc界面结构分析

• 发表时间: 2006
• 期刊: Proceedings of 2006 IEEE 4th World Conference on Photovoltaic Energy Conversion (印刷中)
• 作者: J.Kyokane;N.Tsujimoto;T.Ueda;M.Fukuma;T.Kita;Yusuke Yamashita
• 通讯作者: Yusuke Yamashita

C_(60)/a-C Superlattice Structures for Solar Cell Applications

用于太阳能电池应用的 C_(60)/a-C 超晶格结构

• 发表时间: 2005
• 期刊: Proceedings of 31st Photovoltaic Specialists Conference
• 作者: J.Kyokane;N.Tsujimoto;M.Ishida;Y.Yanagisawa;T.Ueda;Nobuaki Kojima
• 通讯作者: Nobuaki Kojima

Conductivity Behavior of C_<60>/a-C Superlattice Structures for Solar Cell Applications

用于太阳能电池应用的 C_<60>/a-C 超晶格结构的导电行为

• 发表时间: 2004
• 期刊: Proceedings of 19th European Photovoltaic Solar Energy Conference
• 作者: Nobuaki Kojima

Optical and Electrical Properties of C_(60)/a-C Superlattice Structures for Solar Cell Applications

用于太阳能电池应用的 C_(60)/a-C 超晶格结构的光学和电学特性

• 发表时间: 2004
• 期刊: Technical Digest of 14th International Photovoltaic Science and Engineering Conference
• 作者: Nobuaki Kojima

Hydrogen Treatment Effects of a-C Films For C_(60)/a-C Superlattice Solar Cells

C_(60)/a-C超晶格太阳能电池a-C薄膜的氢处理效果

• 发表时间: 2006
• 期刊: Proceedings of 2006 IEEE 4th World Conference on Photovoltaic Energy Conversion (印刷中)
• 作者: J.Kyokane;N.Tsujimoto;M.Ishida;M.Fukuma;Keiichi Honda
• 通讯作者: Keiichi Honda