CsPbBr3钙钛矿/Pt杂化纳米结构中等离激元-激子耦合引起的发光猝灭和辐射速率减小

刘春旭; 张继森; 陈泳屹; 景鹏涛; 张立功; 赵海峰; 付喜宏; 王立军

doi:10.3788/fgxb20173812.1597

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CsPbBr₃钙钛矿/Pt杂化纳米结构中等离激元-激子耦合引起的发光猝灭和辐射速率减小

材料合成及性能 | 更新时间：2020-08-12

- CsPbBr₃钙钛矿/Pt杂化纳米结构中等离激元-激子耦合引起的发光猝灭和辐射速率减小
- Luminescence Lifetime Enhanced by Exciton-plasmon Couple in Hybrid CsPbBr₃ Perovskite/Pt Nanostructure
- 发光学报 2017年38卷第12期页码：1597-1604
- 作者机构：
  
  发光学及应用国家重点实验室中国科学院长春光学精密机械与物理研究所,吉林长春,130033
- 作者简介：
- 基金信息：
  
  国家自然科学基金（61077025，10904140，10774142，60308008）资助项目()
- DOI：10.3788/fgxb20173812.1597
  中图分类号： TP394.1;O482.31
- 纸质出版日期：2017-12-5，
  
  收稿日期：2017-6-20，
  
  修回日期：2017-7-25，
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刘春旭, 张继森, 陈泳屹等. CsPbBr3钙钛矿/Pt杂化纳米结构中等离激元-激子耦合引起的发光猝灭和辐射速率减小[J]. 发光学报, 2017,38(12): 1597-1604

LIU Chun-xu, ZHANG Ji-sen, CHEN Yong-yi etc. Luminescence Lifetime Enhanced by Exciton-plasmon Couple in Hybrid CsPbBr3 Perovskite/Pt Nanostructure[J]. Chinese Journal of Luminescence, 2017,38(12): 1597-1604
刘春旭, 张继森, 陈泳屹等. CsPbBr3钙钛矿/Pt杂化纳米结构中等离激元-激子耦合引起的发光猝灭和辐射速率减小[J]. 发光学报, 2017,38(12): 1597-1604 DOI： 10.3788/fgxb20173812.1597.

LIU Chun-xu, ZHANG Ji-sen, CHEN Yong-yi etc. Luminescence Lifetime Enhanced by Exciton-plasmon Couple in Hybrid CsPbBr3 Perovskite/Pt Nanostructure[J]. Chinese Journal of Luminescence, 2017,38(12): 1597-1604 DOI： 10.3788/fgxb20173812.1597.

摘要

研究了半导体纳米粒子（SNPs）-金属纳米颗粒（MNPs）耦合导致的SNPs的发光强度猝灭和荧光寿命增强潜在的物理机制，并用传统F ster共振能量传递（FRET）理论描述和分析实验结果。光致发光光谱（PL）和时间分辨光谱观测表明，SNPs的PL强度发生了明显的猝灭，荧光寿命从17.7 ns到30.8 ns延长了近2倍。这种杂化纳米结构表现出不同于杂化前各独立组分的新的协同相互作用光学性质。胶体化学使杂化SNP

-MNP纳米结构中SNP

和MNP构成一个新的单元称为等离激子激元（Plexciton）或激子等离子激元（Excimon），这已在一系列杂化结构中被确认。基于泵浦-探测技术的飞秒瞬态吸收（TA）的实验结果证实了这种从激子-等离激元到等离激子的转换。实验结果分析表明，传统F ster共振能量传递理论不能很好地描述实验结果，在金属存在的情况下，还需要对该理论进一步调整和改进。

Abstract

The mechanism of photoluminescence (PL) quenched and lifetime enhanced by semiconductor nanoparticles (SNPs)-metal nanoparticles (MNPs) couple were investigated and the experimental results have been described and analyzed by the conventional Fster resonance energy transfer (FRET). The plasmonically coupled SNPs have demonstrated the PL quenched obviously and lifetime enhanced from 17.7 ns to 30.8 ns

near to 2 times. The hybrid colloidal CsPbBr

perovskite SNPs/Pt MNPs (S-M) structures exhibit novel optical properties due to the synergetic interaction between the individual components. In hybrid S-M nanostructures

colloidal chemistry incorporates SNP and MNP into a single unit resulting in the formation of plexciton (or excimon) which has now been established in a series of hybrid structures. The experimental results of femtosecond transient absorption (TA) spectroscopy based on the time-resolved pump-probe confirm the transformation from excitons to plexcitons. It was found that the experimental data can't be well described by the theory based on conventional FRET. To modify and improve the conventional FRET is needed.

关键词

杂化CsPbBr3钙钛矿/Pt纳米结构能量传递激子-等离子体耦合荧光辐射速率减小

Keywords

hybrid CsPbBr3 perovskite/Ptenergy transferexciton-plasmon couplelifetime enhancement

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