数字农科院2.0

In Situ Synthesis Of Stretchable And Highly Stable Multi-Color Carbon-Dots/Polyurethane Composite Films For Light-Emitting Devices

文献类型： 外文期刊

作者： Lian, F; Wang, CX; Wu, Q; Yang, MH; Wang, ZY; Zhang, C

作者机构：

期刊名称： RSC ADVANCES

ISSN：

年卷期： 2020 年 10 卷 3 期

页码：

收录情况： JCR（2021版） ; EI（2021版）

摘要： Multi-color-emissive fluorescent polymer nanocomposite films have potential applications in optoelectronic devices. Herein, stretchable, mechanically stable multi-color carbon-dots-based films are in situ fabricated by condensation and aging of carboxylated polyurethane in the presence of various carbon sources. As-prepared CDs/PU films emit different colors covering from blue (414 nm) to red (620 nm) by tuning reaction conditions. Moreover, CDs are fixed and have good dispersion in the PU matrix due to the interactions of amine groups from the carbon sources with the carboxylate group of PU. Thus, phase separation of composite films can be avoided. And, more than 90% of their emission intensity is preserved after soaking in water for 30 days, aging for up to 6 h at 100 degrees C, and subjecting to several cycles of stretching and natural recovery. These advantages are encouraging for the use of CDs/PU composite films in solid-state lighting applications. Remote multi-color LEDs have been fabricated by placing a down-conversion layer of CDs/PU films separated through coating them on the same chips (emission at 365 nm), with Commission Internationale de l'Eclairage color coordinates of (0.22, 0.23), (0.43, 0.53), (0.49, 0.46), and (0.41, 0.28), respectively.

分类号：

  • 相关文献
作者其他论文 更多>>