Abstract Ternary Ⅰ-Ⅲ-Ⅵ quantum dots (QDs) have become promising color-conversion materials for warm white light-emitting diodes (WLEDs) because of their broad emission, large stokes shift, high luminescence and low-toxicity. In this work, AgInS2/ZnS (AIS/ZnS) core/shell QDs were synthesized via a facile microwave-assisted aqueous method. The PL emission can be tuned from 540 to 622 nm by varying the Ag/In ratio and the maximum quantum yield can reach 58.27%. Flexible luminescent films were obtained by embedding AIS/ZnS QDs in polyacrylamide hydrogel, which were combined with blue InGaN chips to fabricate remote-type warm WLEDs. The as-prepared LEDs exhibit a relatively high color rendering index (CRI) of 87.5 and a correlated color temperature (CCT) of 3669 K, indicating that water-soluble AIS/ZnS QDs are competitive color-conversion materials for warm WLEDs.

中文翻译：

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用于暖白光 LED 的高发光水溶性 AgInS2/ZnS 量子点-水凝胶复合材料

摘要 Ⅰ-Ⅲ-Ⅵ三元量子点（QDs）由于其发光范围广、斯托克斯位移大、发光高、毒性低等优点，已成为暖白光发光二极管（WLEDs）的有前途的颜色转换材料。在这项工作中，AgInS2/ZnS（AIS/ZnS）核/壳量子点通过简便的微波辅助水法合成。通过改变 Ag/In 比，PL 发射可以从 540 nm 调整到 622 nm，最大量子产率可以达到 58.27%。通过在聚丙烯酰胺水凝胶中嵌入 AIS/ZnS QD 获得柔性发光薄膜，将其与蓝色 InGaN 芯片结合制造远程型暖 WLED。所制备的 LED 具有 87.5 的相对较高的显色指数 (CRI) 和 3669 K 的相关色温 (CCT)，