Yin Zhigang, Wei Jiajun, Zheng Qingdong
State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences 155 Yangqiao Road West Fuzhou Fujian 350002 P. R. China; University of Chinese Academy of Sciences 19 Yuquan Road Beijing 100049 P. R. China.
State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences 155 Yangqiao Road West Fuzhou Fujian 350002 P. R. China.
Adv Sci (Weinh). 2016 Feb 18;3(8):1500362. doi: 10.1002/advs.201500362. eCollection 2016 Aug.
Organic solar cells (OSCs) have shown great promise as low-cost photovoltaic devices for solar energy conversion over the past decade. Interfacial engineering provides a powerful strategy to enhance efficiency and stability of OSCs. With the rapid advances of interface layer materials and active layer materials, power conversion efficiencies (PCEs) of both single-junction and tandem OSCs have exceeded a landmark value of 10%. This review summarizes the latest advances in interfacial layers for single-junction and tandem OSCs. Electron or hole transporting materials, including metal oxides, polymers/small-molecules, metals and metal salts/complexes, carbon-based materials, organic-inorganic hybrids/composites, and other emerging materials, are systemically presented as cathode and anode interface layers for high performance OSCs. Meanwhile, incorporating these electron-transporting and hole-transporting layer materials as building blocks, a variety of interconnecting layers for conventional or inverted tandem OSCs are comprehensively discussed, along with their functions to bridge the difference between adjacent subcells. By analyzing the structure-property relationships of various interfacial materials, the important design rules for such materials towards high efficiency and stable OSCs are highlighted. Finally, we present a brief summary as well as some perspectives to help researchers understand the current challenges and opportunities in this emerging area of research.
在过去十年中，有机太阳能电池（OSCs）作为用于太阳能转换的低成本光伏器件展现出了巨大潜力。界面工程为提高有机太阳能电池的效率和稳定性提供了一种强有力的策略。随着界面层材料和活性层材料的快速发展，单结和串联有机太阳能电池的功率转换效率（PCEs）均已超过10%这一里程碑值。本综述总结了单结和串联有机太阳能电池界面层的最新进展。电子或空穴传输材料，包括金属氧化物、聚合物/小分子、金属和金属盐/配合物、碳基材料、有机-无机杂化/复合材料以及其他新兴材料，作为高性能有机太阳能电池的阴极和阳极界面层被系统地呈现。同时，将这些电子传输和空穴传输层材料作为构建单元，全面讨论了用于传统或倒置串联有机太阳能电池的各种互连层，以及它们在弥合相邻子电池之间差异方面的功能。通过分析各种界面材料的结构-性能关系，突出了此类材料用于高效稳定有机太阳能电池的重要设计规则。最后，我们给出简要总结以及一些观点，以帮助研究人员了解这一新兴研究领域当前面临的挑战和机遇。
