祝贺梁晓娟和向卫东老师指导研究生何美玲在Applied Surface Science上发表学术论文

标题（中文）：锰掺杂氯化铅铯钙钛矿量子点嵌入二氧化硅/氧化铝的复合物中用于白光LED

标题（英文）：Mn-doped CsPbCl3 perovskite quantum dots (PQDs) incorporated into

silica/alumina particles used for WLEDs

刊物名称及期号、页码：Applied Surface Science 448 (2018): 400-406.

作者姓名（中文）：何美玲，程银子，沈琳俐，沈晨阳，张慧灵，向卫东*，梁晓娟*

作者姓名（英文）：Meiling He, Yinzi Cheng, Lingli Shen, Chenyang Shen, Huiling Zhang, Weidong Xiang *, Xiaojuan Liang *

摘要：Recently, more and more scholars synthesised the Mn-doped CsPbX3 (X=Cl, Br, I) inorganic perovskite quantum dots (PQDs), which exhibited a strong dopant luminescence characteristic of d-d transition of Mn2+ and with dual-color emission. However, the high instability in air and anion exchange have seriously hindered the application of PQDs in optoelectronic devices. Here, we resolve these problems with SiO2/Al2O3 monolith (SAM) through a simple sol-gel process and obtained a robust luminescent PQDs-SiO2/Al2O3 monolith (PQDs-SAM) with surprising high stability. This is an easy one-pot operation and can be done with large quantities. The most significant aspect of this is that the composites not only maintain the PQDs remarkable optical properties, but also improve their stability. What’s more, it can prevent the anion-exchange reaction. The Mn-doped CsPbCl3 PQDs-SAM in powder form was easily mixed into the resins and applied as color-converting layer with curing on blue light-emitting diodes (LED). And for the first time, the orange PQDs-SAM composite was used as red phosphor and stacked on the Ce3+:YAG phosphor-in-glass (Ce-PiG) via screen-printing technology (Ce-PiG&R-PQDs-SAM). Whereafter, warm WLED were constructed by blending the Ce-PiG&R-PQDs-SAM materials with the InGaN blue chips. And the constructed WLEDs generate a warm white with an optimal luminous efficacy (LE) of 80.91 l m/W, a high CRI of 83.8, and a low CCT of 4082 K.

研究现状：

近年来，越来越多的学者合成了掺锰的CsPbX₃ (X = Cl, Br, I)无机钙钛矿量子点，荧光光谱显示出Mn²⁺的d-d跃迁导致有双发光中心的发光特性。然而，掺锰的CsPbCl₃ 量子点溶液存在严重的不稳定性，阻碍了量子点在光电器件中的应用。本篇文章中我们通过一个简单的溶胶-凝胶方法，将量子点溶液与仲丁醇三乙基正硅酸铝盐(DBATES)结合，得到一个PQDs-SAM，制备的薄膜在一定长的时间内依然保持高度的荧光发光。

创新点：

1.溶胶凝胶法师一种简单的一次性操作，可以大量完成。

2.实验数据表明复合材料不仅保持了量子点显著的光学性能，而且提高了其稳定性，具有显著的优越性。

原文链接：https://doi.org/10.1016/j.apsusc.2018.04.098