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首页> 外文期刊>Polymers for advanced technologies >Comparative study of the optical, electrochemical, electrolumiscent, and photovoltaic properties of dendritic pendants modified poly(p-phenylene vinylene)s
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Comparative study of the optical, electrochemical, electrolumiscent, and photovoltaic properties of dendritic pendants modified poly(p-phenylene vinylene)s

机译：树枝状侧基改性聚对苯撑亚乙烯基的光学，电化学，电致发光和光伏性质的比较研究

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摘要

In this study, the optical, electrochemical, electrolumiscent, and photovoltaic properties of a series of poly(p-phenylene vinylene) (PPV) derivatives bearing different dendritic pendants, poly{2-[3',5'-bis(2''-ethylhexyloxy)benzyloxy]-1,4-phenylenevinylene} (BE-PPV), poly{2-[2',5'-bis(3'',7''-dimethyl)octyloxy]-1,4-phenylenevinylene} (BD-PPV), poly[2-methoxy-5-(2(-ethylhexyloxy)-1,4-phenylenevinylene) (MEH-PPV), poly{2-[3',5'-bis(2''-ethylhexyloxy)benzyloxy]-1,4-phenylenevinylene}-co-poly[2-methoxy-5-(2'-ethylhexyloxy)-1,4-phenylenevinylene] (BE-co-MEH-PPV), and poly{2-[2',5'-bis(3'',7''-dimethyl)octyloxy]-1,4-phenylenevinylene}-co-poly[2-methoxy-5-(3',7'-dimethyloctyloxy)-1,4-phenylenevinylene] (BD-co-MDMO-PPV), were investigated. The steric pendants strongly affect the absorption spectra, photoluminescence (PL) sepctra, the onset oxidation/reduction potentials, and further affect the electrolumiscent and photovoltaic properties. Copolymerization can reduce the steric effect and improve the electrolumiscent and photovoltaic properties. The brightness of light-emitting diodes base on copolymer BE-co-MEH-PPV and BD-co-MDMO-PPV reached 3988 and 3864 cd/m~2, respectively, much higher than that based on homopolymer BE-PPV (523 cd/m~2) and BD-PPV (333 cd/m~2), also higher than that based on MEH-PPV (3788 cd/m~2). The power conversion efficiency (PCE) of solar cells based on BE-co-MEH-PPV and BD-co-MDMO-PPV reached 1.41, 0.76%, respectively, much higher than that based on BE-PPV (0.24%) and BD-PPV (0.14%).
机译：在这项研究中，一系列带有不同树枝状悬垂物，聚{2- [3'，5'-bis（2''）的聚对亚苯基亚乙烯基（PPV）衍生物的光学，电化学，电致发光和光伏性质-乙基己基氧基）苄氧基] -1,4-亚苯基亚乙烯基}（BE-PPV），聚{2- [2'，5'-双（3''，7''-二甲基）辛氧基] -1,4-亚苯基亚乙烯基} （BD-PPV），聚[2-甲氧基-5-（2（-乙基己氧基）-1,4-亚苯基亚乙烯基）（MEH-PPV），聚{2- [3'，5'-双（2''-乙基己氧基）苄氧基] -1,4-亚苯基亚乙烯基}-共-聚[2-甲氧基-5-（2'-乙基己氧基）-1,4-亚苯基亚乙烯基]（BE-co-MEH-PPV）和聚{2- [2'，5'-双（3''，7''-二甲基）辛氧基] -1,4-亚苯基亚乙烯基}-共聚[2-甲氧基-5-（3'，7'-二甲基辛氧基）-1 [4-苯基亚乙烯基]（BD-co-MDMO-PPV）被研究。空间悬挂物强烈影响吸收光谱，光致发光（PL）隔膜，开始的氧化/还原电势，并进一步影响电致发光和光伏特性。共聚可降低空间效应并改善电致发光和光伏性质。基于共聚物BE-co-MEH-PPV和BD-co-MDMO-PPV的发光二极管的亮度分别达到3988和3864 cd / m〜2，远高于基于均聚物BE-PPV（523 cd / m〜2）和BD-PPV（333 cd / m〜2），也高于基于MEH-PPV的（3788 cd / m〜2）。基于BE-co-MEH-PPV和BD-co-MDMO-PPV的太阳能电池的功率转换效率（PCE）分别达到1.41、0.76％，远高于基于BE-PPV（0.24％）和BD的太阳能电池-PPV（0.14％）。

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