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Natural drying effect on active layer for achieving high performance in polymer solar cells

Author

Listed:
  • Hu, Ziyang
  • Zhang, Jianjun
  • Huang, Like
  • Sun, Jingyang
  • Zhang, Ting
  • He, Hongyun
  • Zhang, Jing
  • Zhang, Houcheng
  • Zhu, Yuejin

Abstract

The self-organization of the polymer in solar cells based on regioregular poly(3-hexylthiophene)(RR-P3HT):[6, 6]-phenyl C61-butyric acid methyl ester is studied systematically as a function of the room temperature (RT) (varied from 300 K to 290 K). Optimal self-organized structures within the RR-P3HT:PCBM films are achieved by varying spin speed and time as well as the temperature at which the spin casting process occurs. These blend films are characterized by UV–vis absorption spectroscopy, atomic force microscopy, and X-ray diffraction measurements. The optimum device efficiency can be achieved in naturally dried devices when spin coating within the temperature range 292–294 K. Both the power conversion efficiency (PCE) and fill factor (FF) of the optimum devices show a plateau region, with PCEs exceed 4% and FFs close to 0.70. For RT < 290 K, the corresponding devices show a wide distribution of performance parameters for the unhomogeneous active layer. While for RT > 296 K, the short current density, FF and PCE of the corresponding devices are gradually decreased, suggesting that there is a major change in the ordered structure of the polymer. Based on the results, it is demonstrated that high performance device can be achieved just by natural drying the active layer at RT condition in air condition without further thermal treatments.

Suggested Citation

  • Hu, Ziyang & Zhang, Jianjun & Huang, Like & Sun, Jingyang & Zhang, Ting & He, Hongyun & Zhang, Jing & Zhang, Houcheng & Zhu, Yuejin, 2015. "Natural drying effect on active layer for achieving high performance in polymer solar cells," Renewable Energy, Elsevier, vol. 74(C), pages 11-17.
    • Handle: RePEc:eee:renene:v:74:y:2015:i:c:p:11-17
    DOI: 10.1016/j.renene.2014.07.034
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    References listed on IDEAS

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    1. Lizin, Sebastien & Leroy, Julie & Delvenne, Catherine & Dijk, Marc & De Schepper, Ellen & Van Passel, Steven, 2013. "A patent landscape analysis for organic photovoltaic solar cells: Identifying the technology's development phase," Renewable Energy, Elsevier, vol. 57(C), pages 5-11.
    2. Zhe Li & Him Cheng Wong & Zhenggang Huang & Hongliang Zhong & Ching Hong Tan & Wing Chung Tsoi & Ji Seon Kim & James R. Durrant & João T. Cabral, 2013. "Performance enhancement of fullerene-based solar cells by light processing," Nature Communications, Nature, vol. 4(1), pages 1-7, October.
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    Cited by:

    1. Yasa, Mustafa & Depci, Tolga & Alemdar, Eda & Hacioglu, Serife O. & Cirpan, Ali & Toppare, Levent, 2021. "Non-fullerene organic photovoltaics based on thienopyrroledione comprising random copolymers; effect of alkyl chains," Renewable Energy, Elsevier, vol. 178(C), pages 202-211.

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