Photoluminescence spectroscopy and lifetime measurements from self-assembled semiconductor-metal nanoparticle hybrid arrays

Haridas, M.; Basu, J. K.; Gosztola, D. J.; Wiederrecht, G. P.
August 2010
Applied Physics Letters;8/23/2010, Vol. 97 Issue 8, p083307
Academic Journal
We present results of photoluminescence spectroscopy and lifetime measurements on thin film hybrid arrays of semiconductor quantum dots and metal nanoparticles embedded in a block copolymer template. The intensity of emission as well as the measured lifetime would be controlled by varying the volume fraction and location of gold nanoparticles in the matrix. We demonstrate the ability to both enhance and quench the luminescence in the hybrids as compared to the quantum dot array films while simultaneously engineering large reduction in luminescence lifetime with incorporation of gold nanoparticles.


Related Articles

  • Single InGaAs Quantum Dot Coupling to the Plasmon Resonance of a Metal Nanocrystal. Urbańczyk, A.; Hamhuis, G.; Nötzel, R. // Nanoscale Research Letters;Dec2010, Vol. 5 Issue 12, p1926 

    We report the observation of coupling of single InGaAs quantum dots with the surface plasmon resonance of a metal nanocrystal, which leads to clear enhancement of the photoluminescence in the spectral region of the surface plasmon resonance of the metal structures. Sharp emission lines, typical...

  • Photoluminescence enhancement and quenching in metal-semiconductor quantum dot hybrid arrays. Haridas, M.; Tripathi, L. N.; Basu, J. K. // Applied Physics Letters;2/7/2011, Vol. 98 Issue 6, p063305 

    Hybrid monolayer arrays of metal and semiconductor quantum dots have been prepared to study the exciton-plasmon interaction. We observed crossover from strong quenching to enhancement in photoluminescence of the quantum dots as a function of the emission wavelength for fixed interparticle...

  • Composite thin films of CdSe nanocrystals and a surface passivating/electron transporting block... Mattoussi, H.; Radzilowski, L. H. // Journal of Applied Physics;10/15/1999, Vol. 86 Issue 8, p4390 

    Presents a microscopic characterization of composite thin films made of cadmium-selenium (CdSe) semiconductor nanocrystals (quantum dots) dispersed in a polynorbornene-based block copolymer with surface-passivating and electron transport functionalities. Effect of the three-dimensional...

  • Symmetric diblock copolymers in thin films. I. Phase stability in self-consistent field... Geisinger, T.; Muller, M.; Binder, K. // Journal of Chemical Physics;9/15/1999, Vol. 111 Issue 11, p5241 

    Investigates the phase behavior of symmetric diblock copolymers confined into a thin film. Finding of parallel, impenetrable film boundaries; First order transitions between phases with different number of lamellae which are parallel oriented to the film boundaries; Film thicknesses investigated.

  • Morphology of thin block copolymer films on chemically patterned substrates. Hao Chen; Chakrabarti, Amitabha // Journal of Chemical Physics;4/22/1998, Vol. 108 Issue 16, p6897 

    Presents the results of a numerical study on a coarse-grained model of di-block copolymer (BCP) thin films confined between two hard walls. Specification of the two walls; Domination of the morphology of the BCP thin film; Discussion on the different characteristics of the morphology.

  • Nanolithographic templates from diblock copolymer thin films. Mansky, P.; Harrison, C.K. // Applied Physics Letters;4/29/1996, Vol. 68 Issue 18, p2586 

    Describes a technique for creating nanolithographic templates from diblock copolymer thin films. Description of the starting material; Self-assembly of the copolymer into a hexagonally packed array of polybutadiene cylinders; Discussion on the role of point by point techniques in complex...

  • Photoluminescence enhancement in nanocomposite thin films of CdS—ZnO. Ayyub, Pushan; Vasa, Parinda; Taneja, Praveen; Banerjee, Rajarshi; Singh, B. P. // Journal of Applied Physics;5/15/2005, Vol. 97 Issue 10, p10R510 

    We show that the photoluminescence emitted from a dense, two-component quantum dot ensemble on a thin film is significantly higher and decays much faster than that from quantum dots of either of the two pure systems (CdS and ZnO). The semiconductor nanocomposite, in which the characteristic...

  • Temperature dependence of electronic energy transfer in PbS quantum dot films. Wei Lü; Kamiya, Itaru; Ichida, Masao; Ando, Hiroaki // Applied Physics Letters;8/24/2009, Vol. 95 Issue 8, p083102 

    Colloidal PbS quantum dots dispersed as close-packed film and in polystyrene (PS) matrix are prepared and photoluminescence (PL) spectra are measured in the temperature range of 5–300 K. The integrated PL intensity of the close-packed film increases as the temperature is raised from 5 to...

  • Tuning the photoluminescence characteristics with curvature for rolled-up GaAs quantum well microtubes. Chun, Ik Su; Bassett, Kevin; Challa, Archana; Xiuling Li // Applied Physics Letters;6/21/2010, Vol. 96 Issue 25, p251106 

    III-V microtubes and nanotubes are formed by a strain-induced self-rolling process. We report room-temperature photoluminescence (PL) characteristics of such microtubes with embedded GaAs quantum-well structures and wall thickness as thin as 38 nm. Rolled-up tubes show dramatic PL intensity...


Read the Article


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

Try another library?
Sign out of this library

Other Topics