金纳米颗粒对量子点荧光自发辐射的影响
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摘要
基于时间相关单光子计数技术,研究了金纳米颗粒对CdSe/ZnS量子点荧光自发辐射的影响。制备了与金纳米颗粒有效耦合的量子点样品,测量了高浓度量子点样品的荧光寿命,发现金纳米颗粒能够显著降低量子点的荧光寿命。研究了单量子点的荧光特性,发现单量子点与金纳米颗粒耦合时,荧光寿命降低到无金纳米颗粒时的1%左右。通过数值计算,研究了量子点偏振方向,量子点与金纳米颗粒间的距离,以及金纳米颗粒直径等参数对量子点荧光自发辐射速率的影响。
The effect of gold nanoparticles on the fluorescence spontaneous emission of CdSe/ZnS quantum dots(QDs)is investigated based on the time-correlated single photon counting technique.The quantum dot samples coupled with gold nanoparticles effectively are prepared.The fluorescence lifetime of QDs with a high concentration is measured,and it is found that the fluorescence lifetime of QDs can be significantly reduced by the gold nanoparticles.The fluorescence properties of a single QD are also studied and it is found that the fluorescence lifetime of the quantum dot coupled with gold nanoparticles is reduced to about one percent of that without gold nanoparticles.The effects of the polarization direction of QDs,the distance between the QDs and the gold nanoparticles,the diameters of gold nanoparticles and other parameters on the fluorescence spontaneous emission rate of QDs are investigated by the numerical calculation.
The effect of gold nanoparticles on the fluorescence spontaneous emission of CdSe/ZnS quantum dots(QDs)is investigated based on the time-correlated single photon counting technique.The quantum dot samples coupled with gold nanoparticles effectively are prepared.The fluorescence lifetime of QDs with a high concentration is measured,and it is found that the fluorescence lifetime of QDs can be significantly reduced by the gold nanoparticles.The fluorescence properties of a single QD are also studied and it is found that the fluorescence lifetime of the quantum dot coupled with gold nanoparticles is reduced to about one percent of that without gold nanoparticles.The effects of the polarization direction of QDs,the distance between the QDs and the gold nanoparticles,the diameters of gold nanoparticles and other parameters on the fluorescence spontaneous emission rate of QDs are investigated by the numerical calculation.
引文
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[2]Baba K,Nishida K.Single-molecule tracking in living cells using single quantum dot applications[J].Theranostics,2012,2(7):655-667.
[3]Zhu X M,Wang X M,Feng G,et al.Quantum dot conjugated RGD for targeted in vivo imaging of laryngocarcinoma vessel[J].Chinese Journal of Lasers,2014,41(5):0504002.朱小妹,王晓梅,冯刚,等.量子点偶联RGD用于喉癌血管的靶向活体成像[J].中国激光,2014,41(5):0504002.
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[6]Antelman J,Wilking-Chang C,Weiss S,et al.Nanometer distance measurements between multicolor quantum dots[J].Nano Letters,2009,9(5):2199-2205.
[7]Chen W B,Ma H,Ye J X,et al.Research progress on quantum dot light emitting diodes[J].Laser&Optoelectronics Progress,2017,54(11):110003.陈雯柏,马航,叶继兴,等.量子点显示器件研究进展[J].激光与光电子学进展,2017,54(11):110003.
[8]Wang H P,Wang G L,Qiu P,et al.Design and characteristics analysis of single photon detector based on quantum-dot field effect transistor[J].Chinese Journal of Lasers,2013,40(1):0118001.王红培,王广龙,邱鹏,等.量子点场效应晶体管单光子探测器的设计与特性分析[J].中国激光,2013,40(1):0118001.
[9]Qasim K,Lei W,Li Q.Quantum dots for light emitting diodes[J].Journal of Nanoscience and Nanotechnology,2013,13(5):3173-3185.
[10]Tan H,Ni Z Y,Pi X D,et al.Research progress in application of silicon quantum dots in optoelectronic devices[J].Laser&Optoelectronics Progress,2017,54(3):030006.谭华,倪朕伊,皮孝东,等.硅量子点在光电器件中的应用研究进展[J].激光与光电子学进展,2017,54(3):030006.
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[13]Gramotnev D K,Bozhevolnyi S I.Plasmonics beyond the diffraction limit[J].Nature Photonics,2010,4(2):83-91.
[14]Liu Z,Li E,Shalaev V M,et al.Near field enhancement in silver nanoantenna-superlens systems[J].Applied Physics Letters,2012,101(2):021109.
[15]Huang H T,Li M,Jin L,et al.Passively Q-switched solid-state laser using gold nanorod as saturable absorber[J].Chinese Journal of Lasers,2017,44(7):0703021.黄海涛,李敏,金琳,等.金纳米棒饱和吸收体1μm被动调Q固体激光器[J].中国激光,2017,44(7):0703021.
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[23]Belacel C,Habert B,Bigourdan F,et al.Controlling spontaneous emission with plasmonic optical patch antennas[J].Nano Letters,2013,13(4):1516-1521.
[24]Hoang T B,Akselrod G M,Argyropoulos C,et al.Ultrafast spontaneous emission source using plasmonic nanoantennas[J].Nature Communications,2015,6:7788.
[25]Yuan C T,Yu P,Ko H C,et al.Antibunching single-photon emission and blinking suppression of CdSe/ZnS quantum dots[J].Acs Nano,2009,3(10):3051-3056.
[26]Pfeiffer M,Lindfors K,Wolpert C,et al.Enhancing the optical excitation efficiency of a single selfassembled quantum dot with a plasmonic nanoantenna[J].Nano Letters,2010,10(11):4555-4558.
[27]Kinkhabwala A A,Mullen K,Fan S,etal.Large single-molecule fluorescence enhancements produced by a bowtie nanoantenna[J].Nature Photonics,2009,3(11):654-657.
[28]Kummar S,Ciesielski T E,Fogarasi M C.Resonant plasmonic enhancement of single-molecule fluorescence by individual gold nanorods[J].Acs Nano,2014,8(5):4440-4449.
[29]Yi M,Zhang D,Wen X,et al.Fluorescence enhancement caused by plasmonics coupling between silver nano-cubes and silver film[J].Plasmonics,2011,6(2):213-217.
[30]Qin A J,Zhang Y,Han N,et al.Preparation and self-assembly of amphiphilic polymer with aggregation-induced emission characteristics[J].Science China Chemistry,2012,55(5):772-778.
[31]Thomas S W,Joly G D,Swager T M.Chemical sensors based on amplifying fluorescent conjugated polymers[J].Chemical Reviews,2007,107(4):1339-1386.
[32]Singhal A,Skandan G,Wang A,et al.On nanoparticle aggregation during vapor phase synthesis[J].Nanostructured Materials,1999,11(4):545-552.
[33]Subero J,Ning Z,Ghadiri M,et al.Effect of interface energy on the impact strength of agglomerates[J].Powder Technology,1999,105(1/2/3):66-73.
[34]Ming T,Kou X,Chen H,et al.Ordered gold nanostructure assemblies formed by droplet evaporation[J].Angewandte Chemie,2008,47(50):9685-9690.
[35]Liu C,Zhou Y,Wang X W,et al.Fluorescence lifetime imaging microscopy and its research progress[J].Laser&Optoelectronics Progress,2011,48(11):111102.刘超,周燕,王新伟,等.荧光寿命成像技术及其研究进展[J].激光与光电子学进展,2011,48(11):111102.
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[40]Sauvan C,Hugonin J P,Maksymov I S,et al.Theory of the spontaneous optical emission of nanosize photonic and plasmon resonators[J].Physical Review Letters,2013,110(23):237401.
[41]Jia H W,Yang F,Zhong Y,et al.Understanding localized surface plasmon resonance with propagative surface plasmon polaritons in optical nanogap antennas[J].Photonics Research,2016,4(6):293-305.