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合肥工业大学 光电技术研究院 特种显示技术国家工程实验室, 测量理论与精密仪器安徽省重点实验室, 安徽 合肥 230009
[ "张思健(1996—),男,安徽六安人,硕士研究生,2018年于安徽工程大学获得学士学位,主要从事CsPbX3量子点的合成及放大自发辐射性能研究。E-mail: zsj67638585@163.com" ]
[ "朱俊(1979—),男,江苏靖江人,博士,研究员,2005年于中国科学技术大学获得博士学位,主要从事量子点发光显示研究。E-mail: jzhu@hfut.edu.cn" ]
[ "陆红波(1979—),男,安徽合肥人,博士,研究员,2006年于中国科学技术大学获得博士学位,主要从事新型液晶材料及器件方面的研究。E-mail: bozhilu@hfut.edu.cn" ]
收稿日期:2022-04-15,
修回日期:2022-04-23,
纸质出版日期:2022-07-05
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张思健, 胡建, 吕梅, 等. 聚合物钝化钙钛矿量子点的红光放大自发辐射性能[J]. 液晶与显示, 2022,37(7):787-796.
Si-jian ZHANG, Jian HU, Mei L, et al. Red amplified spontaneous emission of polymer passivated perovskite quantum dots[J]. Chinese journal of liquid crystals and displays, 2022, 37(7): 787-796.
张思健, 胡建, 吕梅, 等. 聚合物钝化钙钛矿量子点的红光放大自发辐射性能[J]. 液晶与显示, 2022,37(7):787-796. DOI: 10.37188/CJLCD.2022-0127.
Si-jian ZHANG, Jian HU, Mei L, et al. Red amplified spontaneous emission of polymer passivated perovskite quantum dots[J]. Chinese journal of liquid crystals and displays, 2022, 37(7): 787-796. DOI: 10.37188/CJLCD.2022-0127.
全无机CsPb
X
3
(
X
= Cl、Br、I)钙钛矿量子点具有优异的发光性能,是一种极具应用潜力的新型显示材料及激光增益介质。本文制备了发光峰位于640 nm的CsPbBr
1.2
I
1.8
红光量子点,在该量子点薄膜表面分别涂覆聚甲基丙烯酸甲酯(PMMA)、聚甲基丙烯酸异丁酯(PIBMA)、聚苯乙烯(PS)3种带不同功能基团的聚合物,制备了CsPbBr
1.2
I
1.8
/PMMA、CsPbBr
1.2
I
1.8
/PIBMA、CsPbBr
1.2
I
1.8
/PS复合薄膜,研究它们的放大自发辐射性能。结果表明,聚合物钝化一方面提升了量子点的水稳定性,另一方面,PMMA和PIBMA中的C
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3.47133350
1.94733346
O钝化了量子点表面未配位的Pb
2+
,增强了量子点薄膜的光致发光强度。进一步的,在532 nm的纳秒激光泵浦下,CsPbBr
1.2
I
1.8
/PIBMA薄膜放大自发辐射阈值可低至81 µJ·cm
-2
,稳定性也得到提升,展现了作为新型增益介质的潜力。
All-inorganic CsPb
X
3
(
X
= Cl, Br, I) perovskite quantum dots have excellent luminescence properties and are a new kind of display material and laser gain medium with great application potential. In this paper, CsPbBr
1.2
I
1.8
red quantum dots with luminescence peak at 640 nm were prepared and the CsPbBr
1.2
I
1.8
quantum dot films were coated with three kinds of polymers with different functional groups: polymethyl methacrylate (PMMA), polyiso-butyl methacrylate (PIBMA) and polystyrene (PS). The amplified spontaneous emission performance of CsPbBr
1.2
I
1.8
/PMMA, CsPbBr
1.2
I
1.8
/PIBMA and CsPbBr
1.2
I
1.8
/PS composite films were studied. The results show that the polymer passivation improves the water stability of quantum dot films. Moreover, the C
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http://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=32001469&type=
3.47133350
1.94733346
O in PMMA and PIBMA passivates the uncoordinated Pb
2+
on the surface of quantum dots, enhancing the photoluminescence intensity of QD films. Furthermore, the amplified spontaneous emission threshold of CsPbBr
1.2
I
1.8
/PIBMA film is as low as 81 µJ·cm
-2
under nanosecond laser pumping at 532 nm. The stability is improved, demonstrating its potential as a novel gain medium.
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