电子传输层对溶液法制备的小分子有机太阳能电池性能的影响。
Impact of the electron-transport layer on the performance of solution-processed small-molecule organic solar cells.
作者信息
Long Guankui, Wan Xiangjian, Kan Bin, Hu Zhicheng, Yang Xuan, Zhang Yi, Zhang Mingtao, Wu Hongbing, Huang Fei, Su Shijian, Cao Yong, Chen Yongsheng
机构信息
Key Laboratory of Functional Polymer Materials, Collaborative Innovation Center of Chemical Science and Engineering, Center for Nanoscale Science and Technology, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071 (PR China).
出版信息
ChemSusChem. 2014 Aug;7(8):2358-64. doi: 10.1002/cssc.201402171. Epub 2014 Jul 1.
Although the performance of polymer solar cells has been improved significantly recently through careful optimization with different interlayers for the same materials, more improvement is needed in this respect for small-molecule-based solar cells, particularly for the electron-transport layers (ETLs). In this work, three different solution-processed ETLs, PFN, ZnO nanoparticles, and LiF, were investigated and compared in the performance of small-molecule-based devices, and power conversion efficiencies (PCEs) of 8.32, 7.30, and 7.38% were achieved, respectively. The mechanism for the ETL-induced enhancement has been studied, and different ETLs have a significantly different impact on the device performance. The clearly improved performance of PFN is attributed to the combination of reduced bimolecular recombination and increased effective photon absorption in the active layer.
尽管最近通过对相同材料使用不同的中间层进行仔细优化，聚合物太阳能电池的性能有了显著提高，但在基于小分子的太阳能电池方面，特别是电子传输层（ETL），在这方面仍需要进一步改进。在这项工作中，研究并比较了三种不同的溶液处理电子传输层，即聚（9,9-双（3'-(N,N-二甲基氨基)丙基）-2,7-芴）（PFN）、氧化锌纳米颗粒和氟化锂在基于小分子的器件中的性能，分别实现了8.32%、7.30%和7.38%的功率转换效率（PCE）。对电子传输层诱导增强的机制进行了研究，不同的电子传输层对器件性能有显著不同的影响。PFN性能的明显改善归因于活性层中双分子复合减少和有效光子吸收增加的综合作用。
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