TITLE

Tunable emission based on the composite of Au nanoparticles and CdSe quantum dots deposited on elastomeric film

AUTHOR(S)
Chen, C. W.; Wang, C. H.; Wei, C. M.; Chen, Y. F.
PUB. DATE
February 2009
SOURCE
Applied Physics Letters;2/16/2009, Vol. 94 Issue 7, pN.PAG
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
A simple approach to investigate the dependence of emission on the separation distance between metal nanoparticles and semiconductor quantum dots is demonstrated. Without varying the mixed concentrations, a tunable emission is achieved based on the deposition of the composite of Au nanoparticles and CdSe quantum dots on elastomeric film. By utilizing the inherent nature of the elasticity of the elastomeric film, it is found that depending on the separation distance, the emission intensity can be quenched or enhanced. The underlying mechanism can be explained quite well by the interplay between the local field excitation due to surface plasmons and electrons transfer to metal nanoparticles.
ACCESSION #
36797964

 

Related Articles

  • Mechanisms of fluorescence blinking in semiconductor nanocrystal quantum dots. Jau Tang; Marcus, R. A. // Journal of Chemical Physics;8/1/2005, Vol. 123 Issue 5, p054704 

    The light-induced spectral diffusion and fluorescence intermittency (blinking) of semiconductor nanocrystal quantum dots are investigated theoretically using a diffusion-controlled electron-transfer (DCET) model, where a light-induced one-dimensional diffusion process in energy space is...

  • Ultrafast single-electron transfer in coupled quantum dots driven by a few-cycle chirped pulse. Wen-Xing Yang; Ai-Xi Chen; Yanfeng Bai; Ray-Kuang Lee // Journal of Applied Physics;2014, Vol. 115 Issue 14, p143105-1 

    We theoretically study the ultrafast transfer of a single electron between the ground states of a coupled double quantum dot (QD) structure driven by a nonlinear chirped few-cycle laser pulse. A time-dependent Schrödinger equation without the rotating wave approximation is solved numerically....

  • Mechanism of electronic-excitation transfer in organic light-emitting devices based on semiconductor quantum dots. Vitukhnovskii, A.; Vashchenko, A.; Lebedev, V.; Vasiliev, R.; Brunkov, P.; Bychkovskii, D. // Semiconductors;Jul2013, Vol. 47 Issue 7, p971 

    The results of an experimental study of organic light-emitting diodes (LEDs) with luminescent layers based on two types of CdSe/CdS semiconductor quantum dots (QDs) with an average CdSe core diameter of 3 and 5 nm and a characteristic CdS shell thickness of 0.5 nm are presented. The dependences...

  • Controlling blinking in multilayered quantum dots. Ruimin Wang; Yanpeng Zhang; Chenli Gan; Muhammad, Javed; Min Xiao // Applied Physics Letters;4/12/2010, Vol. 96 Issue 15, p151107 

    The fluorescence intermittency of multilayered quantum dots (QDs) is experimentally investigated. The measured blinking statistical probabilities for QDs of different shell structures and at different excitation powers are compared with the diffusion controlled electron transfer model. The...

  • Probing the antisymmetric Fano interference assisted by a Majorana fermion. Dessotti, F. A.; Ricco, L. S.; de Souza, M.; Souza, F. M.; Seridonio, A. C. // Journal of Applied Physics;2014, Vol. 116 Issue 17, p173701-1 

    As the Fano effect is an interference phenomenon where tunneling paths compete for the electronic transport, it becomes a probe to catch fingerprints of Majorana fermions lying on condensed matter systems. In this work, we benefit of this mechanism by proposing as a route for that an...

  • Practical enhancement of photoluminescence by metal nanoparticles. Sun, G.; Khurgin, J. B.; Soref, R. A. // Applied Physics Letters;3/9/2009, Vol. 94 Issue 10, pN.PAG 

    We develop a simple yet rigorous theory of the photoluminescence (PL) enhancement in the vicinity of metal nanoparticles. The enhancement takes place during both optical excitation and emission. The strong dependence on the nanoparticle size enables optimization for maximum PL efficiency. Using...

  • Evidence for activated conduction in a single electron transistor. Morgan, Nicole Y.; Abusch-Magder, David; Kastner, Marc A.; Takahashi, Yasuo; Tamura, Hiroyuki; Murase, Katsumi // Journal of Applied Physics;1/1/2001, Vol. 89 Issue 1, p410 

    Conductance measurements are reported for quantum dots fabricated by pattern-dependent oxidation in silicon; the small size of these devices allows observation of single electron behavior to temperatures as high as 200 K. At temperatures above 6 K the zero-bias conductance peaks, periodic in...

  • Biexciton lasing in CuCl quantum dots. Masumoto, Yasuaki; Kawamura, Tomohiro; Era, Koh // Applied Physics Letters;1/18/1993, Vol. 62 Issue 3, p225 

    Demonstrates the biexciton lasing in CuCl quantum dots. Discovery of the lasing of CuCl quantum dots; Lasing transition from biexciton to exciton; Relevance of the pulsed ultraviolet laser excitation.

  • Isolated double quantum dot capacitively coupled to a single quantum dot single-electron transistor in silicon. Emiroglu, Emir G.; Hasko, David G.; Williams, David A. // Applied Physics Letters;11/10/2003, Vol. 83 Issue 19, p3942 

    We report electron transport measurements on a single-island single-electron transistor capacitively coupled to an isolated double quantum dot at 4.2 K. The structure is fabricated through trench isolation in silicon-on-insulator. We detect single-electron polarization of the isolated double...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics