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Enhancement of photovoltaic performance by two-step dissolution processed photoactive blend in polymer solar cells

提高聚合物太阳电池性能的新方法: 两步溶解法制备电池活性层

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Abstract

We reported enhanced performance of polymer solar cells, based on poly(3-hexylthiophene):[6,6]-phenyl-C61-butyric acid methyl ester (P3HT:PC61BM) and polythieno[3,4-b]-thiophene-co-benzodithiophene:[6,6]-phenyl-C71-butyric acid methyl ester (PTB7:PC71BM) photovoltaic systems, by a two-step dissolution treatment of photoactive blends. Optical and morphological characterization revealed that the composition of the ordered polymer and donor/acceptor phase structure in the photoactive layer can be optimized using a two-step dissolution treatment. In addition, time-resolved photoluminescence indicated that exciton dissociation efficiency could be increased using this method. Current density-voltage (J-V) measurements showed that power conversion efficiencies (PCE) of the two-step dissolution treated devices were higher than those of one-step treated devices by 24% and 8% for P3HT:PC61BM and PTB7:PC71BM systems, respectively. Therefore, this two-step dissolution treatment further optimizes the performance of polymer solar cells.

摘要

本文以P3HT:PC61BM和PTB7:PC71BM两种有机光伏体系为研究对象, 探讨了光伏材料的“两步”溶解处理对聚合物太阳电池性能的影响. P3HT:PC61BM光活性层的光学与形貌表征揭示了P3HT的有序相结构和给/受体相分离结构可以被“两步”溶解处理进一步优化; 瞬态荧光数据表明, P3HT:PC61BM光活性材料经“两步”溶解处理后, 激子的分离能力得到增强. 经“两步”溶解处理后的器件性能较“一步”溶解处理的器件性能提高了24%. 此外, 同样的处理方式应用于PTB7:PC71BM体系, 可使器件的光伏性能提高8%. 因此, 光活性材料的“两步”溶解处理是一种简单、有效的提高聚合物光伏性能的优化方法.

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Authors and Affiliations

  1. Research Institute for New Materials Technology, Chongqing University of arts and sciences, Chongqing, 402160, China

    Rong Hu  (胡荣), Jiang Cheng  (程江), Haitao Ni  (倪海涛), Jiang Zhu  (朱江), Hongdong Liu  (柳红东), Yurong Liu  (刘玉荣), Lu Li  (李璐) & Chaozhong Guo  (郭朝中)

  2. Division of Chemical Physics, Lund University, Lund, 221 00, Sweden

    Wei Zhang  (张伟) & Kaibo Zheng  (郑凯波)

  3. Gas Processing Center, College of Engineering, Qatar University, PO Box 2713, Doha, Qatar

    Kaibo Zheng  (郑凯波)

Authors
  1. Rong Hu  (胡荣)
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  2. Jiang Cheng  (程江)
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  3. Haitao Ni  (倪海涛)
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  4. Jiang Zhu  (朱江)
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  5. Hongdong Liu  (柳红东)
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  6. Wei Zhang  (张伟)
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  7. Yurong Liu  (刘玉荣)
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  8. Lu Li  (李璐)
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  9. Chaozhong Guo  (郭朝中)
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  10. Kaibo Zheng  (郑凯波)
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Corresponding authors

Correspondence to Wei Zhang  (张伟), Chaozhong Guo  (郭朝中) or Kaibo Zheng  (郑凯波).

Additional information

These authors contributed equally to this work.

Rong Hu received his PhD degree from Renmin University of China in 2014. He is a lecturer at the Research Institute for New Materials Technology of Chongqing University of Arts and Science. His current research interests are the fabrication of organic photovoltaic devices.

Jiang Cheng received his PhD degree from Sichuan University in 2012. He is a lecturer at the Research Institute for New Materials Technology of Chongqing University of Arts and Science. His current research interests are earth abundant photovoltaic materials and organic photovoltaic devices.

Wei Zhang received his PhD degree in optics from the Department of Physics, Harbin Institute of Technology in 2013. He is currently a postdoctoral researcher at the Division of Chemical Physics, Lund University. His research interest includes charge photogeneration and recombination process in polymer solar cells and group III-V nanowires.

Chaozhong Guo received his PhD degree at Chongqing University in 2013. He is an associate professor of chemical engineering and top-notch talent at Chongqing University. His research focuses on green synthesis of graphdiyne-based nanomaterials, including composites derived from conductive nanopolymers and applications in energy conversion and storage.

Kaibo Zheng received his PhD degree from the Department of Material Science, Fudan University in 2010. He is now a senior researcher at the Department of Chemical Physics at Lund University, Sweden. His research interests include design, structural characterization, and ultrafast photo-induced dynamics of nanostructured optoelectronicmaterials such as semiconductor quantum dots, nanowires, and perovskite materials.

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Hu, R., Cheng, J., Ni, H. et al. Enhancement of photovoltaic performance by two-step dissolution processed photoactive blend in polymer solar cells. Sci. China Mater. 59, 842–850 (2016). https://doi.org/10.1007/s40843-016-5128-0

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  • DOI: https://doi.org/10.1007/s40843-016-5128-0

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