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首页> 外文期刊>Advanced functional materials >A Room Temperature Route toward In Situ Crystallization of Perovskite Nanocrystals Induced by Acrylic Acid for Flexible Free-Standing Luminescent Gels
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A Room Temperature Route toward In Situ Crystallization of Perovskite Nanocrystals Induced by Acrylic Acid for Flexible Free-Standing Luminescent Gels

机译：A Room Temperature Route toward In Situ Crystallization of Perovskite Nanocrystals Induced by Acrylic Acid for Flexible Free-Standing Luminescent Gels

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摘要

Perovskite nanocrystals (PNCs) with unique and excellent optical propertieshave emerged as appealing luminescent materials in optoelectronic fields.However, high temperature processing, complicated procedures, and the useof toxic solvents are typically involved in the preparation of PNCs and theirrelated optoelectronic devices. In this study, a one-step method is developedfor the preparation of flexible photoluminescence gel based on PNCsat ambient conditions, which is a promising alternative to the current PNCspreparation strategy in terms of experimental friendliness, ease of production,and the potential for flexible devices. Acrylic acid (AA) is used for in situ crystallizationof PNCs. The interaction between H~+ of AA and perovskite-solventcomplex determines the nucleation and growth of PNCs. This crystallizationmechanism is systematically studied by varying acid category, adjustingsolvent kind, and regulating the ratio of PNCs and gels. To give a proof ofpracticability, flexible free-standing PNCs-gel composites with excellentluminescent and mechanical properties are prepared with the AA treatment.Moreover, the PNCs-gel shape can be customized, which greatly expands thestructural flexibility and functionalities of fabricated devices.

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