Enhancement of Fluorescence Emission for Tricolor Quantum Dots Assembled in Polysiloxane toward Solar Spectrum-Simulated White Light-Emitting Devices.,Small

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Enhancement of Fluorescence Emission for Tricolor Quantum Dots Assembled in Polysiloxane toward Solar Spectrum-Simulated White Light-Emitting Devices.
Small ( IF 13.0 ) Pub Date : 2019-11-29 , DOI: 10.1002/smll.201905266
Guangqi Hu ₁ , Yuqiong Sun ₁ , Jianle Zhuang ₁ , Xuejie Zhang ₁ , Haoran Zhang ₁ , Mingtao Zheng ₁ , Yong Xiao ₁ , Yeru Liang ₁ , Hanwu Dong ₁ , Hang Hu ₁ , Bingfu Lei ₁ , Chaofan Hu ₁ , Yingliang Liu ₁

Affiliation

Commercial white light-emitting diodes (LEDs) have the undesirable characteristics of blue-rich emission and low color rendering index (CRI), while the constituent quantum dots (QDs) suffer from aggregation-induced fluorescence quenching and poor stability. Herein, a strategy is developed to assemble tricolor QDs into a polysiloxane matrix using a polymer-mediated hybrid approach whereby the hybrid composite exhibits a significant enhancement of aggregation-dispersed emission, outstanding photostability, high thermal stability, and outstanding fluorescence recovery. Using the as-prepared hybrid fluorescent materials, the fabricated LEDs exhibit solar spectrum-simulated emission with adjustable Commission Internationale de L'Eclairage coordinates, correlated color temperature, and a recorded CRI of 97. Furthermore, they present no ultraviolet emission and weak blue emission, thus indicating an ideal healthy and high-CRI white LED lighting source.

中文翻译：

聚硅氧烷中组装的三色量子点向太阳光谱模拟白光发射器件的荧光发射增强。

商业白色发光二极管（LED）具有不希望有的富蓝色发射和低显色指数（CRI）的特性，而组成量子点（QD）则存在聚集引起的荧光猝灭和较差的稳定性。本文中，开发了一种使用聚合物介导的杂化方法将三色QD组装到聚硅氧烷基质中的策略，其中杂化复合材料表现出聚集体分散发射的显着增强，出色的光稳定性，高热稳定性和出色的荧光回收率。使用准备好的混合荧光材料，制成的LED表现出具有可调节的International International de L'Eclairage坐标，相关色温和记录的CRI为97的太阳光谱模拟发射。

更新日期：2020-01-09

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