The Nanoscale Morphology of a PCDTBT:PCBM Photovoltaic Blend
The Nanoscale Morphology of a PCDTBT:PCBM Photovoltaic Blend
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DOI：
10.1002/aenm.201100144
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发表时间：
2011-07
影响因子：
27.8
通讯作者：
P. Staniec;A. Parnell;A. Dunbar;Hunan Yi;Andrew J Pearson;Tao Wang;Paul E. Hopkinson;C. Kinane;R. Dalgliesh;A. Donald;A. Ryan;A. Iraqi;Richard A. L. Jones;David G Lidzey
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文献类型：
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作者：
P. Staniec;A. Parnell;A. Dunbar;Hunan Yi;Andrew J Pearson;Tao Wang;Paul E. Hopkinson;C. Kinane;R. Dalgliesh;A. Donald;A. Ryan;A. Iraqi;Richard A. L. Jones;David G Lidzey
基于共轭聚合物和富勒烯共混物的有机光伏器件(OPV)为生产可再生能源提供了一种有吸引力的方法。已经证明，使用卷对卷印刷的大批量技术，可以在柔性衬底上以低成本大面积制造它们。[1-3]虽然已经对供体受体系统P3HT：PCBM(聚(3-己基噻吩基)：[6，6]苯基-C61-丁酸甲酯)进行了大量的工作，但现在人们正在转向使用具有更小的能隙(允许获得更多的太阳光谱发射)和更高的电离势(导致更高的开路电压，从而更大的功率转换效率)的供体材料。一种有前景的OPV应用的新给体聚合物是PCDTBT(聚[N-9‘-十七烷-2，7-咔唑-ALT-5，5-(4’，7‘-二2-噻吩基-2’，1‘，3’-苯并噻二唑)]，其化学结构如图1所示。[4]当PCDTBT与富勒烯受体PC 70BM混合时，已经产生了功率转换效率为∼6%的OPV器件，这是迄今为止最高的OPV效率之一。与基准相比，这些器件的制造工艺有显著差异
Organic photovoltaic devices (OPVs) based on conjugated polymers and fullerene blends offer an attractive method to produce renewable energy. It has been demonstrated that they can be manufactured on fl exible substrates and at low cost over large areas using the high volume technique of roll-to-roll printing. [ 1–3 ] Whilst much work has been devoted to the donoracceptor system P3HT:PCBM (poly(3-hexylthiophene):[6,6]phenyl-C 61 -butyric acid methyl ester), attention is now turning to the use of donor materials which have a reduced energy gap (permitting more of the sun’s spectral emission to be harvested) and an increased ionization potential (leading to an increased open-circuit voltage and thus greater power conversion effi ciency [ 4 , 5 ] ). One promising new donor polymer for OPV applications is PCDTBT (poly [N-9 ′ -heptadecanyl-2,7-carbazole-alt-5,5-(4 ′ ,7 ′ -di2-thienyl-2 ′ ,1 ′ ,3 ′ -benzothiadiazole)] whose chemical structure is shown in Figure 1 . [ 4 ] When PCDTBT is blended with the fullerene acceptor PC 70 BM, OPV devices have been created having a power conversion effi ciency of ∼ 6%, [ 6 ] one of the highest OPV effi ciencies to date. A marked difference in the fabrication process of these devices compared to the benchmark