Browsing by Keywords "Nanocrystalline alloys"

Elements of nanocrystal high-field carrier transport modeling

Sevik, C.; Bulutay, C. (Wiley - V C H Verlag GmbH & Co. KGaA, 2007)

Embedded semiconductor nanocrystals (NCs) within wide bandgap oxide materials are being considered for light emission and solar cell applications. One of the fundamental issues is the high-field transport in NCs. This ...

Fabrication of nanostructured medical-grade stainless steel by mechanical alloying and subsequent liquid-phase sintering

Salahinejad, E.; Hadianfard, M. J.; Ghaffari, M.; Mashhadi, S. B.; Okyay, A., K. (Springer, 2012-05-10)

This article focuses on the microstructure of medical-grade P558 (ASTM F2581) stainless steel produced by mechanical alloying and liquid-phase sintering. Rietveld X-ray diffraction and transmission electron microscopy ...

Nanocrystal integrated light emitting diodes based on radiative and nonradiative energy transfer for the green gap

Nizamoglu, S.; Sari, E.; Baek J.-H.; Lee I.-H.; Demir, H. V. (2009)

Recently the photometric conditions for ultra-efficient solid-state lighting have been discussed [1-2]. These studies show that a luminous efficacy of optical radiation at 408 lm/Wopt and a color rendering index (CRI) of ...

Phase transformation during mechano-synthesis of nanocrystalline/amorphous Fe–32Mn–6Si alloys

Amini, R.; Shamsipoor, A.; Ghaffari, M.; Alizadeh, M.; Okyay, A., K. (Elsevier, 2013)

Mechano-synthesis of Fe-32Mn-6Si alloy by mechanical alloying of the elemental powder mixtures was evaluated by running the ball milling process under an inert argon gas atmosphere. In order to characterize the as-milled ...

Raman and TEM studies of Ge nanocrystal formation in SiO x: Ge / SiOx multilayers

Dana, A.; Aǧan, S.; Tokay, S.; Aydinli, A.; Finstad, T. G. (2007)

Alternating germanosilicate-siliconoxide layers of 10-30 nm thickness were grown on Si substrates by plasma enhanced chemically vapor deposition (PECVD). The compositions of the grown films were determined by X-ray ...

White light generation with CdSe/ZnS core-shell nanocrystals and InGaN/GaN light emitting diodes

Nizamoglu, S.; Ozel, T.; Sari, E.; Demir, H. V. (2006)

We present hybrid white light sources that integrate CdSe/ZnS core-shell nanocrystals on blue InGaN/GaN light emitting diodes (LED). We report on the demonstrations of white light generation using yellow nanocrystals ...