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High efficiency polarization-sensitive organic photovoltaic devices

高效偏振敏感有机光伏器件

基本信息

批准号：
18360011
负责人：
TSUTSUI Tetsuo
金额：
$ 10.09万
依托单位：
Kyushu University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2006
资助国家：
日本
起止时间：
2006 至 2007
项目状态：
已结题

项目摘要

We have reported the fabrication of polarization-sensitive photovoltaic devices made of heterojunction-type vacuum-sublimed multilayer films composed of aligned 3,4,9,10-perylenetetracarboxylic-bisbenzimidazole(aligned PTCBI) and titanyl phthalocyanine (TiOPc). The PTCBI layer was made to be well aligned without losing high power conversion efficiency. The device configuration was ITO/In/aligned PTCBI/TiOPc'poly(3,4-ethylenedioxythiophene): poly (styrenesulfonate)/Au, and the thickness of each layer was optimized for polarization-sensitive photodetection. The power conversion efficiencies under polarized white light parallel and perpendicular to the molecular orientation axis were 0.78% and 0.45%, respectively. When monochromatic polarized light at 540 nm was used, the photocuxrent ratio of the parallel to the perpendicular condition reached a maximum of 2.32.We have also demonstrated the enhancement of the device performance in polymer: PCBM blend photovoltaic cells by insertion of C60 interlayer between the active layer and the upper electrode. The active layer was fabricated by spin coating of a polymer: poly (2-methoxy-5-(20-ethyl-hexyloxy) -1,4-phenylenevinylene) (MEH-PPV) or poly (3-hexylthiopene) (P3HT) and fullerene derivative [5,6]-phenyl-C61-butyric acid methyl ester(PCBM), then the C60 interlayer and LiF/Al electrode were deposited. The both polymer cells with C60 interlayer showed significant increase in the power conversion efficiency compared to cells without the C60 layer.

我们报道了由取向的3，4，9，10-二萘嵌苯四羧酸双苯并咪唑（aligned PTCBI）和钛氧酞菁（TiOPc）组成的异质结型真空升华多层膜制成的偏振敏感光伏器件的制备。使PTCBI层良好地对准而不损失高功率转换效率。器件结构为ITO/In/取向的PTCBI/TiOPc'聚（3，4-亚乙基二氧噻吩）：聚（苯乙烯磺酸盐）/Au，并且每层的厚度被优化用于偏振敏感的光电检测。在平行于分子取向轴和垂直于分子取向轴的偏振白色光下，功率转换效率分别为0.78%和0.45%。当使用540 nm的单色偏振光时，平行与垂直条件下的光电流比达到最大值2.32。我们还证明了在聚合物：PCBM共混光伏电池中通过在活性层和上电极之间插入C60夹层来增强器件性能。通过旋涂聚合物：聚（2-甲氧基-5-（20-乙基-己氧基）-1，4-亚苯基亚乙烯基）（MEH-PPV）或聚（3-己基噻吩）（P3 HT）和富勒烯衍生物[5，6]-苯基-C61-丁酸甲酯（PCBM）制备活性层，然后沉积C60夹层和LiF/Al电极。与没有C60层的电池相比，具有C60夹层的两种聚合物电池显示出功率转换效率的显著增加。