Overcoming efficiency challenges in organic solar cells: rational development of conjugated polymers
Overcoming efficiency challenges in organic solar cells: rational development of conjugated polymers
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DOI：
10.1039/c2ee21608f
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发表时间：
2012-08-01
影响因子：
32.5
通讯作者：
Yu, Luping
中科院分区：
文献类型：
--
作者：
Son, Hae Jung;Carsten, Bridget;Yu, Luping
在这篇前瞻性文章中，我们讨论了有机光伏（OPVs）太阳能电池的发展。我们将重点讨论新的供体聚合物和器件技术的发展，这导致了OPV性能的巨大进步，功率转换效率（pce）达到8-9%。然而，对于opv的广泛使用，需要高模块效率（bbb10 %）和适合商业应用的寿命。为了实现这一目标，开发新的光收集材料、改进器件结构和开发具有成本效益的器件加工方法的跨学科进展至关重要。特别是，新的给体聚合物可以克服现有聚合物太阳能电池的缺点，对进一步提高pce和器件稳定性发挥重要作用。这篇前瞻性的文章阐述了从过去20年的研究中提取出来的聚合物设计标准：能级匹配、聚合物/受体混合膜的纳米形貌、聚合物链的局部偶极矩和稳定性。此外，我们还介绍了具有代表性的给体聚合物，并描述了聚合物发展的研究进展，以超越某些里程碑。我们强调协同研究在开发新材料方面的重要性，例如设计具有改进物理性能的新聚合物，开发器件技术以及对OPV机理的基本理解，这将有助于不断提高OPV的性能。
In this perspective article, we discuss the development of organic photovoltaic (OPVs) solar cells. Our focus will be on discussing the development of new donor polymers and device technologies, which resulted in enormous progress in OPV performances with power conversion efficiencies (PCEs) of 8-9%. However, for the wide spread usage of OPVs, high module efficiencies (>10%) and lifetimes suitable for commercial applications are required. To achieve such goals, interdisciplinary advances in the development of new light-harvesting materials, the improvement of device structures, and the development of cost effective device processing methods are crucial. In particular, new donor polymers overcoming the drawbacks of current polymer solar cells can play an important role to further improve the PCEs and device stability. This perspective article addresses the polymer design criteria that have been distilled out from the research of the past 20 years: energy level matching, nano-morphology of polymer/acceptor blend films, local dipole moments of the polymer chains, and stability. Also, we introduce representative donor polymers and describe the research progress in the polymers development to move beyond certain milestones. We emphasize the importance of the synergetic research efforts in developing new materials, such as the design of new polymers with improved physical properties, the development of device technologies and a fundamental understanding of OPV mechanisms, which will help to continuously enhance the performance of OPVs.