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Optimization of electron transport and cathode materials for efficient organic solar cells

机译:高效有机太阳能电池的电子传输和阴极材料的优化

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In this work we discuss improvements of organic solar cells based on poly(3-hexylthiophene-2,5-diyl) : C_(61)- butyric acid methyl ester (P3HT:PCBM) blends. The polymer layer is combined with various electron transport materials and different cathodes. We were able to utilize the good charge carrier separation and transport properties of the P3HT:PCBM blend together with the flexibility of evaporated heterostructures. The systematic use of different cathodes such as calcium, aluminium/lithiumfluoride and organic intermediate layers resulted in higher fill factors and open circuit voltages compared to simple aluminium cathodes. In particular we studied the influence of additional layers of electron transport layer consisting of C_(60), lithium doped bathophenanthroline (BPhen:Li) 2-(4-tert-butylphenyl)-5-(4-biphenylyl)-1,3,4-oxadiazole (PBD) and 2,9- dimethyl-4,7-diphenyl-1,10-phenantrolene (BCP) on the cell properties. Solar cells with power conversion efficiencies well above 3% have been fabricated.
机译:在这项工作中,我们讨论基于聚(3-己基噻吩-2,5-二基)的有机太阳能电池的改善:C_(61) - 丁酸甲酯(P3HT:PCBM)混合物。聚合物层与各种电子传输材料和不同的阴极组合。我们能够利用P3HT的良好充电载流子分离和运输性能:PCBM混合在一起,蒸发异质结构的柔韧性。与简单的铝阴极相比,诸如钙,铝/锂氟化物和有机中间层的不同阴极如钙,铝/锂氟化物和有机中间层的使用导致更高的填充因子和开路电压。特别地,我们研究了由C_(60),掺杂锂掺杂的银酚(Bphen:Li)2-(4-叔丁基苯基)-5-(4-Biphylyl)-1,3, 4-氧代唑(PBD)和2,9-二甲基-4,7-二苯基-1,10-苯甲烯(BCP)对细胞性质。已经制造了高于3%的功率转换效率的太阳能电池。

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