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钾离子掺杂CsPbCl3：Mn钙钛矿量子点的荧光性能
Fluorescence properties of potassium ions doped CsPbCl3: Mn perovskite quantum dots
- 液晶与显示 2021年36卷第10期 页码：1352-1361
- 作者机构：
中国计量大学 光学与电子科技学院, 浙江 杭州 310018
- 作者简介：
[ "常鹏(1994-), 男, 安徽蚌埠人, 硕士研究生, 2018年于淮南师范学院获得学士学位, 主要从事Micro-LED色转换材料用离子掺杂型钙钛矿量子点材料的研究。E-mail: 978258488@qq.com" ]
[ "翟玥(1993-), 女, 内蒙古呼和浩特人, 博士, 讲师, 2020年于吉林大学获得博士学位, 主要从事纳米荧光材料的合成及器件研究。E-mail: zhaiy@cjlu.edu.cn" ]
[ "王乐(1981-), 女, 河南驻马店人, 博士, 教授, 2012年于浙江大学获得博士学位, 主要从事发光材料与器件、新型照明与显示技术、光谱分析与测试仪器研究。E-mail: calla@cjlu.edu.cn" ]
- 基金信息：浙江省杰出青年基金(LR19F050001);国家自然科学基金(62075203);国家自然科学基金(51832005);国家自然科学基金(51702339)
DOI：10.37188/CJLCD.2021-0161
中图分类号： O482.31收稿日期：2021-06-17，
修回日期：2021-07-19，
纸质出版日期：2021-10
- 稿件说明：
移动端阅览
常鹏, 翟玥, 吴娜, 等. 钾离子掺杂CsPbCl3：Mn钙钛矿量子点的荧光性能[J]. 液晶与显示, 2021,36(10):1352-1361.
Peng CHANG, Yue ZHAI, Na WU, et al. Fluorescence properties of potassium ions doped CsPbCl3: Mn perovskite quantum dots[J]. Chinese journal of liquid crystals and displays, 2021, 36(10): 1352-1361.
常鹏, 翟玥, 吴娜, 等. 钾离子掺杂CsPbCl3：Mn钙钛矿量子点的荧光性能[J]. 液晶与显示, 2021,36(10):1352-1361. DOI： 10.37188/CJLCD.2021-0161.
Peng CHANG, Yue ZHAI, Na WU, et al. Fluorescence properties of potassium ions doped CsPbCl3: Mn perovskite quantum dots[J]. Chinese journal of liquid crystals and displays, 2021, 36(10): 1352-1361. DOI： 10.37188/CJLCD.2021-0161.
摘要
锰（Mn
2+
）离子掺杂的全无机CsPbCl
3
钙钛矿量子点具有独特的光学特性和纳米级颗粒尺寸，在Mini/Micro-LED显示器件中具有巨大的应用潜力。然而，当前CsPbCl
3
：Mn
2+
钙钛矿量子点的荧光量子效率较低，无法满足实际应用需求。针对此问题，本文采用热注入法制备了钾（K
+
）离子和Mn
2+
离子共掺杂的CsPbCl
3
钙钛矿量子点，合成的CsPbCl
3
：（K
+
，Mn
2+
）钙钛矿量子点具有双光发射特性，其发光主要来源于钙钛矿激子和掺杂的Mn
2+
离子。通过优化K
+
离子的掺杂浓度，CsPbCl
3
：（K
+
，Mn
2+
）钙钛矿量子点的荧光量子效率从原始的16.5%提高到66.2%。同时研究了K
+
离子掺杂对CsPbCl
3
：Mn
2+
钙钛矿量子点荧光性能的调控机制。研究结果表明，K
+
离子的掺杂能够有效抑制CsPbCl
3
：（K
+
，Mn
2+
）钙钛矿量子点中本征缺陷态以及Mn-Mn二聚体或Mn相关缺陷态，进而增强了量子点中载流子的辐射复合发光。得益于异质离子掺杂的调控策略，此类掺杂型钙钛矿量子点有望应用于Mini/Micro-LED显示领域。
Abstract
Manganese (Mn
2+
) ion-doped all-inorganic CsPbCl
3
perovskite quantum dots have shown great potential for application in Mini/Micro-LED display devices due to their unique photoluminescence properties and nano-scale particle size. However
the current photoluminescence quantum yields of CsPbCl
3
: Mn
2+
perovskite quantum dots is low and cannot meet the needs of practical applications. Herein
the potassium (K
+
) and Mn
2+
ions co-doped CsPbCl
3
perovskite quantum dots are synthesized via the hot injection method. The prepared CsPbCl
3
: (K
+
Mn
2+
) perovskite quantum dots present a dual-color emission
which can be assigned to the perovskite excitons emission and Mn
2+
ions emission. The photoluminescence quantum yield of CsPbCl
3
: (K
+
Mn
2+
) perovskite quantum dots is improved from 16.5% of original to 66.2% through the optimization of K
+
ions doping concentration. Meanwhile
the regulation mechanism of K
+
ions doping on the photoluminescence properties of CsPbCl
3
: Mn
2+
perovskite quantum dots are investigated. It is shown that the incorporation of K
+
ions can effectively inhibit the formation of intrinsic defect states and Mn-Mn dimers or Mn-related defects in CsPbCl
3
: (K
+
Mn
2+
) perovskite quantum dots
thus enhancing the radiative recombination luminescence of carriers in perovskite quantum dots. Benefiting from the strategy of hetero-ions doping
these doped perovskite quantum dots are expected to be applied in Mini/Micro-LED display fields.
关键词
Keywords
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