Chem. J. Chinese Universities ›› 2026, Vol. 47 ›› Issue (1): 20250291.doi: 10.7503/cjcu20250291

• Article • Previous Articles     Next Articles

Tailoring the Cross-linking Core Size Toward Enhanced Low-temperature Performance of Polymer Electrolytes for Quasi-solid-state Dye-sensitized Solar Cells

LIN Jianfei, LI Yanan, WANG Yinglin(), ZHANG Xintong()   

  1. State Key Laboratory of Integrated Optoelectronics,Key Laboratory of UV?Emitting Materials and Technology of Ministry of Education,School of Physics,Northeast Normal University,Changchun 130024,China
  • Received:2025-10-12 Online:2026-01-10 Published:2025-12-10
  • Contact: ZHANG Xintong E-mail:wangyl100@nenu.edu.cn;xtzhang@nenu.edu.cn
  • Supported by:
    the National Natural Science Foundation of China(62074031)

Abstract:

This study employed cross-linking units with star-like topology of varying sizes ethoxylated trimethylolpropane triacrylate(ETPTA), polyhedral oligomeric silsesquioxanes(POSS) and nano-zirconia) as cross-linking cores to chemically cross-link with poly(ethylene glycol) diacrylate(PEGDA), constructing three polymer networks(EP, PP and ZP) for application in quasi-solid-state dye-sensitized solar cells(DSSCs). The results demonstrate that the strategy of increasing the size of the cross-linking core effectively enlarges the free volume of the polymer, reduces its glass transition temperature, and consequently enhances its low-temperature electrochemical performance. At a low temperature of -40 ℃, the power conversion efficiency(PCE) of the ZP-based device shows a significant increase of 37.4% compared to the EP-based device. This research provides a novel and effective strategy for developing quasi-solid-state electrochemical devices suitable for high altitude environment.

Key words: Quasi-solid-state dye-sensitized solar cell, Gel polymer electrolyte, Chemical cross-linking, Low temperature electrochemical performance

CLC Number: 

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