Publication date: 2nd November 2020
The lead-free halide perovskites (LFHP) playing a prominent role in the next generation of clean energy and the environment. Recently, lead-free halide perovskites have been investigated for optoelectronic devices and energy conversion from solar energy. However, the degradation of those solid-state materials not explored at extreme electrochemical conditions. In this work, we used an electrochemistry tool to analyze the stability of these materials limits the solvents and electrolytes that can be employed in such experiments. In addition to this, we also demonstrated that tuning of the band can lead to unprecedented improvements in their functional properties that are relevant for electrochemical technologies. We selected electrochemically the energy levels of dispersions of LFHP with different bandgaps induced by the different ratios between halides (Cl, Br and I). In our study, we established the stability window for LFHP materials in the application of those electrochemical systems.
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