Author(s)

Rui Zha^*, TianWei Li

Affiliation(s)

School of Materials Science and Engineering, Shenyang Jianzhu University, Shenyang 110168, Liaoning, China.

Corresponding Author

Rui Zha

ABSTRACT

In this paper, [BMIM]BF4 is used to modify the interface of the TiO₂ electron transport layer for the purpose of passivating the interface. The research shows that the interface modification with [BMIM]BF4 reduces the surface defects of the TiO₂ electron transport layer, increases the Fermi level of the interface, reduces the carrier accumulation between the TiO₂ electron transport layer and the perovskite layer, and promotes charge transport. It enhances the electron extraction ability of the electron transport layer, fills the interface defects, and suppresses the non - radiative recombination of charges at the interface. It is beneficial to the growth of perovskite materials and increases the particle size of perovskite. It also improves the photoelectric conversion efficiency of the battery.

KEYWORDS

Perovskite solar cells; Interface modification; [BMIM]BF4

CITE THIS PAPER

Rui Zha, TianWei Li. Imidazolium tetrafluoroborate interface-modified TiO₂ electron transport layer of perovskite solar cells. Chemical Innovation & Technology. 2025, 2(1): 25-31. DOI: https://doi.org/10.61784/cit3005.

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