Zero-dimensional methylammonium iodo bismuthate solar cells and synergistic interactions with silicon nanocrystals
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Organometal trihalide perovskite solar cells have attracted monumental attention in recent years. Today's best devices, based on a three-dimensional perovskite structure of corner-sharing PbI6 octahedra, are unstable, toxic, and display hysteresis in current-voltage measurements. We present zero-dimensional organic-inorganic hybrid solar cells based on methylammonium iodo bismuthate (CH3NH3)3(Bi2I9) (MABI) comprising a Bi2I9 bioctahedra and observe very low hysteresis for scan rates in the broad range of 150 mV s-1 to 1500 mV s-1 without any interfacial layer engineering. We confirm good stability for devices produced and stored in open air without humidity control. The MABI structure can also accommodate silicon nanocrystals, leading to an enhancement in the short-circuit current. Through the material MABI, we demonstrate a promising alternative to the organometal trihalide perovskite class and present a model material for future composite third-generation photovoltaics.
McDonald , C , Ni , C , Švrček , V , Lozac'H , M , Connor , P A , Maguire , P , Irvine , J T S & Mariotti , D 2017 , ' Zero-dimensional methylammonium iodo bismuthate solar cells and synergistic interactions with silicon nanocrystals ' , Nanoscale , vol. 9 , no. 47 , pp. 18759-18771 . https://doi.org/10.1039/c7nr05764d
© 2017 the Authors. This work has been made available online in accordance with the publisher’s policies. This is the author created accepted version manuscript following peer review and as such may differ slightly from the final published version. The final published version of this work is available at https://doi.org/10.1039/C7NR05764D
DescriptionThis work was supported by EPSRC (EP/K022237/1 and EP/M024938/1) and by the New Energy and Industrial Technology Development Organization (NEDO).
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