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（OSC）的影响：报道了热退火和加工添加剂处理对本体异质结（BHJ）OSC中结晶诱导的相分离和光伏性能的影响，所述本体异质结（BHJ）OSC利用混合在1-（3-甲氧羰基）丙基-1-苯基-（6，6）C71（PCBM）中的非外围取代的八戊基四苯并三氮杂卟啉（C5 TBTAPH 2）。通过使用热退火或加工添加剂处理，在BHJ薄膜中的C5 TBTAPH 2-微晶尺寸增大，并且由于结晶诱导的相分离的改善而增加了功率转换效率（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。结合PCBM的热性质和分子聚集情况对上述结果进行了讨论.使用介晶酞菁的全溶液可加工串联电池：由于在500 nm左右的弱吸收，使用C6 TBTAPH 2的BHJ OSC的光伏性能受到限制。利用C6 TBTAPH 2和聚（3-己基噻吩）（P3 HT）组成的传统结构，制备了具有全溶液处理多层结构的叠层太阳能电池。P3 HT单电池的外量子效率在500 nm处最大，C6 TBTAPH 2单电池在720和350 nm处有两个主要的外量子效率峰。叠层两种复合薄膜的叠层太阳能电池覆盖了整个可见光谱范围，实现了3.2%的PCE。

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.