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普适的聚合物本体异质结形貌工程策略:氟碳溶剂热浸泡

梁江湖 陈俊超

梁江湖, 陈俊超. 普适的聚合物本体异质结形貌工程策略:氟碳溶剂热浸泡[J]. 功能高分子学报, 2021, 34(3): 195-197. doi: 10.14133/j.cnki.1008-9357.20210107002
引用本文: 梁江湖, 陈俊超. 普适的聚合物本体异质结形貌工程策略:氟碳溶剂热浸泡[J]. 功能高分子学报, 2021, 34(3): 195-197. doi: 10.14133/j.cnki.1008-9357.20210107002
LIANG Jianghu, CHEN Junchao. Universal Morphology Engineering for Organic Bulk Heterojunction: Hot Fluorous Solvent Soaking[J]. Journal of Functional Polymers, 2021, 34(3): 195-197. doi: 10.14133/j.cnki.1008-9357.20210107002
Citation: LIANG Jianghu, CHEN Junchao. Universal Morphology Engineering for Organic Bulk Heterojunction: Hot Fluorous Solvent Soaking[J]. Journal of Functional Polymers, 2021, 34(3): 195-197. doi: 10.14133/j.cnki.1008-9357.20210107002

普适的聚合物本体异质结形貌工程策略:氟碳溶剂热浸泡

doi: 10.14133/j.cnki.1008-9357.20210107002
详细信息
    作者简介:

    梁江湖(1994—),男,湖南人,博士生,研究方向为能量转化器件。E-mail:liangjianghu@sjtu.edu.cn

    通讯作者:

    陈俊超,E-mail:c3chen@sjtu.edu.cn

  • 中图分类号: O63

Universal Morphology Engineering for Organic Bulk Heterojunction: Hot Fluorous Solvent Soaking

  • 摘要: 聚合物本体异质结太阳能电池的光电转换效率与日俱增,获取理想的给/受体材料双连续互穿网络结构仍然是提升器件性能的关键。近期,上海交通大学钟洪亮团队及其合作者发展了一种氟碳溶剂热浸泡后处理策略,优化了活性层薄膜的形貌。氟碳溶剂热浸泡后处理过程能够对活性层薄膜进行快速且均匀的热退火;并且当所选的氟碳溶剂与薄膜加工残留溶剂在临界温度以上互溶成一相时,该混合溶剂将进一步促进薄膜中给/受体材料的再组装过程,形成更有序的纤维状结构,载流子传输效率更高,吸收光谱也有所红移,光电转换效率显著提升。该方法适用于多种给/受体材料组合,包括聚合物/小分子体系、全聚合物体系、全小分子体系,通过较短时间、较低温度的热浸泡处理便能改善薄膜的形貌,获得优异的光电转换性能。

     

  • 图  1  (a) 氟碳溶剂热浸泡示意图;(b) 3种氟碳溶剂的分子结构以及与氯仿/氯萘混溶情况;(c) 不同热处理方法下器件性能随处理温度的变化曲线;(d) 热浸泡处理前后薄膜表面AFM形貌图[7]

    Figure  1.  (a) Schematic diagram of hot fluorous solvent soaking; (b) Chemical structure of three fluorous solvents and their miscibility with chloroform/1-chloronaphthalene; (c) Device performance versus processing temperature under various post-treatments; (d) AFM topography of the film surface before and after fluorous solvent soaking[7]

    表  1  不同后处理方式下最佳器件性能参数[7]

    Table  1.   Optimal device parameters with various post-treatments[7]

    Post-treatmentsVoc/VJsc/(mA·cm−2)FFPCE/%
    No0.87624.180.71815.21
    TA (90 °C, 5 min)0.85425.510.73315.96
    PFD (90 °C, 2 min)0.86125.300.74016.12
    PFMCH (60 °C, 1 min)0.86325.350.74816.37
    PFT (80 °C, 0.5 min)0.84926.090.74616.52
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  • [1] LEE H, PARK C, SIN D H, et al. Recent advances in morphology optimization for organic photovoltaics [J]. Adv Mater,2018:e1800453.
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    [7] SHAN T, ZHANG Y, WANG Y, et al. Universal and versatile morphology engineering via hot fluorous solvent soaking for organic bulk heterojunction [J]. Nat Commun,2020,11(1):5585. doi: 10.1038/s41467-020-19429-x
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出版历程
  • 收稿日期:  2021-01-07
  • 刊出日期:  2021-06-01

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