Plasmon-enhanced fluorescence in gold nanorod-quantum dot coupled systems

Trotsiuk, Liudmila
Muravitskaya, Alina
Kulakovich, Olga
Guzatov, Dmitry
Ramanenka, Andrey
Keleştemur, Yusuf
Demir, Hilmi
Gaponenko, Sergey
Plasmon-exciton coupling is of great importance to many optical devices and applications. One of the coupling manifestations is plasmon-enhanced fluorescence. Although this effect is demonstrated in numerous experimental and theoretical works, there are different particle shapes for which this effect is not fully investigated. In this work electrostatic complexes of gold nanorods and CdSe/CdZnS quantum dots were studied. Double-resonant gold nanorods have an advantage of the simultaneous enhancement of the absorption and emission when the plasmon bands match the excitation and fluorescence wavelengths of an emitter. A relationship between the concentration of quantum dots in the complexes and the enhancement factor was established. It was demonstrated that the enhancement factor is inversely proportional to the concentration of quantum dots. The maximal fluorescence enhancement by 10.8 times was observed in the complex with the smallest relative concentration of 2.5 quantum dots per rod and approximately 5 nm distance between them. Moreover, the influence of quantum dot location on the gold nanorod surface plays an important role. Theoretical study and experimental data indicate that only the position near the nanorod ends provides the enhancement. At the same time, the localization of quantum dots on the sides of the nanorods leads to the fluorescence quenching.


Colloidal CdSe Quantum Wells with Graded Shell Composition for Low-Threshold Amplified Spontaneous Emission and Highly Efficient Electroluminescence
Keleştemur, Yusuf; Anni, Marco; Yakunin, Sergii; De Giorgi, Maria Luisa; Kovalenko, Maksym V. (2019-12-01)
Semiconductor nanoplatelets (NPLs) have emerged as a very promising class of colloidal nanocrystals for light-emitting devices owing to their quantum-well-like electronic and optical characteristics. However, their lower photoluminescence quantum yield (PLQY) and limited stability have hampered the realization of their outstanding luminescent properties in device applications. Here, to address these deficiencies, we present a two-step synthetic approach that enables the synthesis of core/shell NPLs with pre...
Nonlinear compressible finite viscoleasticity of epoxy-based polymers
Dal, Hüsnü; Gromala, P. J.; Han, B. (2019-01-01)
Epoxy-based polymers are widely used in the semiconductor industry as thermal and/or electrical interfaces and as encapsulating material. In the automotive industry, epoxy-based molding compounds (EMCs) are often used to protect not only the single IC packages but also the entire electronic control units (ECUs) (or the power modules). The stress caused by the mismatch of the coefficient of thermal expansion (CTE) between EMC and adjacent materials is one of the major causes for premature failure. In the tem...
Nanocrystal silicon based visible light emitting pin diodes
Anutgan, Mustafa; Katırcıoğlu, Bayram; Department of Physics (2010)
The production of low cost, large area display systems requires a light emitting material compatible with the standard silicon (Si) based complementary metal oxide semiconductor (CMOS) technology. The crystalline bulk Si is an indirect band semiconductor with very poor optical properties. On the other hand, hydrogenated amorphous Si (a-Si:H) based wide gap alloys exhibit strong visible photoluminescence (PL) at room temperature, owing to the release of the momentum conservation law. Still, the electrolumine...
Highly efficient and broadband light transmission in 90 degrees nanophotonic wire waveguide bends
KURT, HAMZA; Giden, I. H.; Ustun, K. (The Optical Society, 2011-03-01)
Nanophotonic wire silicon waveguides are indispensable components of integrated photonic circuits. Because of the inherent nature of these waveguides, such as narrow width and high-index contrast, corners with large bending radii are inevitable for efficient light transmission with small loss values, which, in turn, impedes the miniaturization of photonic components. To alleviate huge bending losses of a right angle waveguide, we designed a structure incorporating a two-dimensional (2D) photonic crystal, al...
Ultrathin thermally stable multiband metamaterial absorber design for solar energy applications
Mulla, Batuhan; Sabah, Cumali (SPIE-Intl Soc Optical Eng, 2018-01-01)
A dual band metamaterial absorber is designed for photovoltaic applications. The novelty of the design provides the absorption of the energy in an ultrathin semiconductor layer. Additionally, dependence of the absorption on the geometric dimensions, polarization, and temperature are also discussed. The results for the thermal characterization of the aforementioned design showed that this absorber operates almost independently from the environmental temperature conditions and the polarization of the light. A...
Citation Formats
L. Trotsiuk et al., “Plasmon-enhanced fluorescence in gold nanorod-quantum dot coupled systems,” NANOTECHNOLOGY, vol. 31, no. 10, pp. 0–0, 2020, Accessed: 00, 2021. [Online]. Available: