Investigation reveals altered exciton lifetime in 2D perovskite with fullerene derivatives, suggesting design strategies for optoelectronics.
We investigated the optical properties of a lead-iodide 2D perovskite, (C12H25NH3)2PbI4, incorporating a fullerene derivative in its organic barrier layers. The observation of distinct exciton peaks confirmed that the 2D layered structure was maintained even after fullerene intercalation. Furthermore, time-resolved photoluminescence measurements showed that the exciton lifetime shortened with increasing fullerene content. This reduction in lifetime suggests the possibility that the intercalated fullerenes extract electrons from the inorganic quantum wells. These findings provide useful insights for the design of functional perovskite optoelectronic materials.
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Shimosako et al. (2026) studied this question.
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