Review reveals the critical regulatory role of the A cation in lead halide perovskites, highlighting new pathways for tailoring optoelectronic material performance.
The A cation in ABX₃ organic-inorganic lead halide perovskites (OLHPs) was conventionally believed to hardly affect their optoelectronic properties. However, more recent developments have unraveled the critical role of the A cation in the regulation of the physicochemical and optoelectronic properties of OLHPs. We review the important breakthroughs enabled by the versatility of the A cation and highlight potential opportunities and unanswered questions related to the A cation in OLHPs.
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Lee et al. (2022) studied this question.
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