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Issue 12, 2016
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Null current hysteresis for acetylacetonate electron extraction layer in perovskite solar cells

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Abstract

Solution processed zirconium acetylacetonate (Zr(acac)) is successfully employed as an electron extraction layer, replacing conventional titanium oxide, in planar CH3NH3PbI3 perovskite solar cells. The as-prepared Zr(acac) film possesses high transparency, high conductivity, a smooth morphology, high wettability, compatibility with PbI2 DMF solution, and an energy level matching that of CH3NH3PbI3 perovskite material. An average power conversion efficiency of about 11.93%, along with a high fill factor of 74.36%, an open circuit voltage of 1.03 V, and a short-circuit current density of 15.58 mA cm−2 is achieved. The overall performance of the devices is slight better than that of cells using ruthenium acetylacetonate (Ru(acac)). The differences between solar cells with different electron extraction layers in charge recombination, charge transport and transfer and lifetime are further explored and it is demonstrate that Zr(acac) is a more effective and promising electron extraction layer. This work provides a simple, and cost effective route for the preparation of an effective hole extraction layer.

Graphical abstract: Null current hysteresis for acetylacetonate electron extraction layer in perovskite solar cells

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Publication details

The article was received on 10 Sep 2015, accepted on 08 Oct 2015 and first published on 12 Oct 2015


Article type: Paper
DOI: 10.1039/C5NR06234A
Citation: Nanoscale, 2016,8, 6328-6334
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    Null current hysteresis for acetylacetonate electron extraction layer in perovskite solar cells

    Abd. R. B. Mohd Yusoff, M. A. Mat Teridi and J. Jang, Nanoscale, 2016, 8, 6328
    DOI: 10.1039/C5NR06234A

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