液晶性有機半導体を用いた高効率有機薄膜太陽電池の開発

1. 热退火和加工添加剂处理对有机太阳能电池（OSCs）结晶诱导相分离和光伏性能的影响：报道了利用非外围取代的八戊基四苯并三氮卟啉（C5TBTAPH2）混合在1-（3-甲氧基羰基）丙基-1-苯基-(6,6)C71 （PCBM）中的体异质结（BHJ） OSCs的热退火和加工添加剂处理对晶体诱导相分离和光伏性能的影响。通过热退火或加工添加剂处理，BHJ薄膜中的c5tbtaph2晶粒尺寸增大，晶体诱导相分离的改善提高了功率转换效率（pce）。然而，加工添加剂处理的器件的最佳PCE高于热退火处理的器件的PCE。考虑到PCBM的热性能和分子聚集性，对这些结果进行了讨论。采用中源酞菁的全溶液可制程串联电池：由于C6TBTAPH2在500 nm左右的弱吸收，限制了BHJ OSCs的光伏性能。我利用C6TBTAPH2和聚（3-己基噻吩）（P3HT）组成的传统结构，制作了全溶液处理多层结构的串联太阳能电池。P3HT单体电池在500 nm处有最大的外量子效率，C6TBTAPH2单体电池在720和350 nm处有两个主峰。两层复合薄膜叠加后的串联太阳能电池覆盖了所有可见光谱范围，PCE达到3.2%。

1. Effects of thermal-annealing and processing-additive treatment in organic solar cells　(OSCs): Effects of thermal-annealing and processing-additive treatment on crystallization-induced phase separation and photovoltaic performance in bulk heterojunction (BHJ) OSCs utilizing non-peripherally substituted octapentyl tetrabenzotriazaporphyrin (C5TBTAPH2) mixed in 1-(3-methoxycarbonyl)propyl-1-phenyl-(6,6)C71 (PCBM) were reported. By using either thermal-annealing or processing-additive treatment, the C5TBTAPH2-crystallite sizes in the BHJ films were enlarged and the power conversion efficiencies (PCEs) were increased due to improvement of the crystallization-induced phase separation. However, the optimum PCE of the processing-additive treated devices was higher than those PCE of devices treated by thermal annealing. These results were discussed by taking the thermal properties and molecular aggregation of PCBM into consideration.2. All-solution processalbe tandem cell using mesogenic phthalocyanine: The photovoltaic performance of BHJ OSCs using C6TBTAPH2 limits due to the weak absorption at around 500 nm. I have fabricated the tandem solar cell with all-solution processed multilayer structure utilizing a conventional structure composed of C6TBTAPH2 and poly(3-hexylthiophene) (P3HT). The P3HT single cell give a maximum the external quantum efficiency at 500 nm, and the C6TBTAPH2 single cell has two predominant peaks at 720 and 350 nm. The tandem solar cells with stacking of the two composite thin films cover the all visible spectral range and the PCE of 3.2% was achieved.