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Fabrication of Organic Solar Cell by Using Materials having Different Carrier Diffusion Constant

利用不同载流子扩散常数材料制备有机太阳能电池

基本信息

批准号：
13650335
负责人：
USUI Hiroaki
金额：
$ 1.79万
依托单位：
Tokyo University of Agriculture and Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2001
资助国家：
日本
起止时间：
2001 至 2002
项目状态：
已结题

项目摘要

The development of organic solar cell requires to solve such issues as, (1) deposition of thin organic films that have high carrier mobility or photo-sensitivity, (2) stacking of organic layers that have carrier transport capability of different charges, (3) thermal stability of the stacked structure, (4) formation of electrode for electron injection into the stacked structure from outer circuit, etc. This research intends to investigate the first three items from the viewpoint of film formation technology, i. e., through the deposition polymerization of carrier transport layers. The fourth item was investigated by the formation of carrier injection layer that has high carrier injection efficiency into the organic layer.Regarding the deposition polymerization, it has been shown that thermally stable polyimide thin films can be obtained without using solvents by the co-deposition of perylenetetracarboxyjic dianhydride and several diamines. The film is expected to have charge transport c … More apability and high optical absorption coefficient coming from the perylene unit. It was also shown that polyurea thin films having azobenzene unit as photoreceptor can be prepared by the co-deposition of azo-containing diamine and diphenylmethane diisocyanate. The dipole orientation of the azobenzene unit can be controlled by the bias voltage on the substrate during the film formation. π-conjugated polymer thin films can be deposited by the co-deposition of biphenylaldehyde and diaminonaphthalene. The film was found to have high conductivity. By the iomzation-assisted deposition of an acrylate monomer that has tetraphenyldiaminobiphenyl unit, hole-transporting polymer thin films were obtained. Since these films can be obtained without solvents, they can be easily stacked with electron transport materials for fabricating organic thin film devices.As for the carrier injection layer, strontium or strontium oxide ultra thin films were prepared at the interface of the cathode and the organic layer. The films were deposited by the ionization-assisted method to the thickness of several nanometers. This method brought about a remarkable improvement of electron injection to the organic layer from the aluminum cathode. Less

有机太阳能电池的发展需要解决的问题有：(1)具有高载流子迁移率或光敏性的有机薄膜的沉积；(2)具有不同电荷载流子输运能力的有机层的堆叠；(3)堆叠结构的热稳定性；(4)从外电路向堆叠结构注入电子的电极的形成等。本研究拟从成膜技术的角度考察前三项，即通过载流子输运层的沉积聚合。第四项是通过在有机层中形成具有高载流子注入效率的载流子注入层来研究。在沉积聚合方面，研究表明，在不使用溶剂的情况下，由苝四羧基二酐和几种二胺共沉积，可以得到热稳定的聚酰亚胺薄膜。该薄膜具有电荷输运特性和更高的光吸收系数。以偶氮二胺和二苯基甲烷二异氰酸酯共沉积可制得以偶氮苯为光感受器的聚脲薄膜。偶氮苯单元的偶极取向可以通过薄膜形成过程中衬底上的偏置电压来控制。用联苯醛和二氨基萘共沉积可制备π共轭聚合物薄膜。人们发现这种薄膜具有高导电性。以四苯基二氨基联苯为单元的丙烯酸酯单体为研究对象，采用碘化辅助沉积的方法制备了空穴传输聚合物薄膜。由于这些薄膜可以在没有溶剂的情况下获得，它们可以很容易地与电子传输材料堆叠，用于制造有机薄膜器件。对于载流子注入层，在阴极与有机层的界面处制备锶或氧化锶超薄膜。通过电离辅助法制备了厚度达几纳米的薄膜。该方法显著改善了铝阴极向有机层的电子注入。少