Double-layered printable electrolytes for highly efficient dye-sensitized solar cells

I. Ping Liu, Yun Yu Chen, Yu Syuan Cho, Li Wei Wang, Chung Yu Chien, Yuh Lang Lee

研究成果: Article同行評審

32 引文 斯高帕斯(Scopus)

摘要

In this study, novel double-layered electrolyte architecture is first demonstrated for quasi-solid-state dye-sensitized solar cells (DSSCs). The experimental results show that the electrolyte prepared using 9 wt% polymer blends has rheological characteristics suitable for the printing process, and the corresponding DSSC with a double-layered electrolyte architecture reveals an efficiency (7.99%) comparable to that of a common liquid-state cell under 1 sun irradiation. Moreover, when zinc oxide (ZnO) nanoparticles are introduced as the additives in electrolytes, the open-circuit voltage (Voc) increases, whereas the short-circuit current density (Jsc) decreases. This phenomenon is attributed to the ZnO effects on the two electrodes, i.e., upward shift of the TiO2 conduction band at the photoelectrode and suppression of interfacial charge transfer at the counter electrode. A solution which takes advantage of the double-layered architecture is proposed herein to overcome the above dilemma. Electrolytes with and without the ZnO additives are printed onto the photoelectrode and counter electrode, respectively. The DSSC prepared by this solution maintains the high Voc, and furthermore, the Jsc increases, thus achieving an improved efficiency of 8.50%. A similar quasi-solid-state DSSC also outperforms its liquid-state counterpart under indoor fluorescent-light conditions, demonstrating impressive efficiencies beyond 15%.

原文English
文章編號228962
期刊Journal of Power Sources
482
DOIs
出版狀態Published - 2021 1月 15

All Science Journal Classification (ASJC) codes

  • 可再生能源、永續發展與環境
  • 能源工程與電力技術
  • 物理與理論化學
  • 電氣與電子工程

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