发光学报2017，Vol.38Issue(12)：1597-1604,8.DOI:10.3788/fgxb20173812.1597
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
摘要
Abstract
The mechanism of photoluminescence ( PL) quenched and lifetime enhanced by semicon-ductor nanoparticles ( SNPs )-metal nanoparticles ( MNPs ) couple were investigated and the experi-mental results have been described and analyzed by the conventional F?ster 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 CsPbBr3 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 plex-citons. It was found that the experimental data can't be well described by the theory based on conven-tional 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Key words
hybrid CsPbBr3 perovskite/Pt/energy transfer/exciton-plasmon couple/lifetime enhancement分类
数理科学引用本文复制引用
刘春旭,张继森,陈泳屹,景鹏涛,张立功,赵海峰,付喜宏,王立军..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):1597-1604,8.基金项目
国家自然科学基金(61077025,10904140,10774142,60308008)资助项目Supported by National Natural Science Foundation of China(61077025,10904140,10774142,60308008) （61077025,10904140,10774142,60308008）
