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Now showing items 11-18 of 18

Multi-material specific, targeted self-assembly of nanocrystal emitters using genetically engineered peptides on optoelectronic microchips

Zengin, Güliş; Şeker, U. O. S.; Koç, Aslı; Mutlugün, Evren; Akyüz, Özgün; Sarı, Emre; Sarıkaya, M.; Tamerler, C.; Demir, Hilmi Volkan (IEEE, 2008-11)

We demonstrated material-specific binding of the quantum dot emitters hybridized with GEPI on multi-material patterned microchips. These proof-of-concept results open up new opportunities in nanophotonics, allowing for ...

Structural tuning of color chromaticity through nonradiative energy transfer by interspacing CdTe nanocrystal monolayers

Cicek, N.; Nizamoglu, S.; Ozel, T.; Mutlugun, E.; Karatay, D. U.; Lesnyak, V.; Otto, T.; Gaponik N.; Eychmuller, A.; Demir, Hilmi Volkan (American Institute of Physics, 2009-02-09)

We proposed and demonstrated architectural tuning of color chromaticity by controlling photoluminescence decay kinetics through nonradiative Forster resonance energy transfer in the heterostructure of layer-by-layer spaced ...

Time-resolved photoluminescence study of CdSe/CdMnS/CdS core/multi-shell nanoplatelets

Murphy, J. R.; Delikanli S.; Scrace, T.; Zhang, P.; Norden, T.; Thomay, T.; Cartwright, A. N.; Demir, Hilmi Volkan; Petrou, A. (American Institute of Physics Inc., 2016)

We used photoluminescence spectroscopy to resolve two emission features in CdSe/CdMnS/CdS and CdSe/CdS core/multi-shell nanoplatelet heterostructures. The photoluminescence from the magnetic sample has a positive circular ...

High-quality InP/ZnS nanocrystals with high photometric performance and their application to white quantum dot light-emitting diodes

Yang, X.; Tan, S. T.; Demir, Hilmi Volkan; Sun, X. W. (IEEE, 2012)

Full visible range covering InP/ZnS core-shell nanocrystals with high photometric performance have been prepared. Making use of these nanocrystals, we demonstrate a white quantum dot LED with a high color rendering index ...

Quantum dots on vertically aligned gold nanorod monolayer: plasmon enhanced fluorescence

Peng, B.; Li, Z.; Mutlugun, E.; Martinez, P. L. H.; Li, D.; Zhang, Q.; Gao, Y.; Demir, Hilmi Volkan; Xiong, Q. (Royal Society of Chemistry, 2014)

CTAB-coated Au nanorods were directly self-assembled into a vertically aligned monolayer with highly uniform hot spots through a simple but robust approach. By coupling with CdSe/ZnS quantum dots, a maximum enhancement of ...

Mn2+-doped CdSe/CdS core/multishell colloidal quantum wells enabling tunable carrier-dopant exchange interactions

Delikanlı, S.; Akgül, M. Z.; Murphy, J. R.; Barman, B.; Tsai, Y.; Scrace, T.; Zhang, P.; Bozok, B.; Hernández-Martínez, P.L.; Christodoulides, J.; Cartwright, A. N.; Petrou, A.; Demir, Hilmi Volkan (American Chemical Society, 2015)

In this work, we report the manifestations of carrier-dopant exchange interactions in colloidal Mn2+-doped CdSe/CdS core/multishell quantum wells. The carrier-magnetic ion exchange interaction effects are tunable through ...

Europium (II)-Doped Microporous Zeolite Derivatives with Enhanced Photoluminescence by Isolating Active Luminescence Centers

Yang, X. Y.; Tiam, T. S.; Yu, X. B.; Demir, Hilmi Volkan; Sun, X. W. (American Chemical Society, 2011-10-21)

Solid-state reaction is the most common method for preparing luminescent materials. However, the luminescent dopants in the hosts tend to aggregate in the high-temperature annealing process, which causes adverse effect in ...

Quantum efficiency enhancement in nanocrystals using nonradiative energy transfer with optimized donor-acceptor ratio for hybrid LEDs

Nizamoglu, S.; Akin, O.; Demir, Hilmi Volkan (American Institute of Physics, 2009-06-17)

The quantum efficiency enhancement in nanocrystal solids is critically important for their efficient use as luminophors on color-conversion light emitting diodes (LEDs). For this purpose, we investigate energy gradient ...