Yahel Barak

ORCID: 0000-0003-1330-4006
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About
Contact & Profiles
Research Areas
  • Quantum Dots Synthesis And Properties
  • Chalcogenide Semiconductor Thin Films
  • Perovskite Materials and Applications
  • Numerical methods in engineering
  • ZnO doping and properties
  • Fatigue and fracture mechanics
  • Copper-based nanomaterials and applications
  • Rock Mechanics and Modeling
  • Characterization and Applications of Magnetic Nanoparticles
  • Photonic Crystals and Applications
  • Spectroscopy and Quantum Chemical Studies
  • Gold and Silver Nanoparticles Synthesis and Applications
  • Nanocluster Synthesis and Applications
  • Atomic and Subatomic Physics Research
  • Conducting polymers and applications

Technion – Israel Institute of Technology
2017-2023

Copper-doped II-VI and copper-based I-III-VI2 colloidal quantum dots (CQDs) have been at the forefront of interest in nanocrystals over past decade, attributable to their optically activated copper states. However, related recombination mechanisms are still unclear. The current work elaborates on processes such materials by following spin properties copper-doped CdSe/CdS (Cu@CdSe/CdS) CuInS2 CuInS2/(CdS, ZnS) core/shell CQDs using continuous-wave time-resolved detected magnetic resonance...

10.1021/acsnano.2c05130 article EN ACS Nano 2022-08-01

Controlling the spin degrees of freedom photogenerated species in semiconductor nanostructures via magnetic doping is an emerging scientific field that may play important role development new spin-based technologies. The current work explores properties colloidal CdSe/CdS:Mn seeded-nanorod structures doped with a dilute concentration Mn2+ ions across rods. were determined using continuous-wave optically detected resonance (ODMR) spectroscopy recorded under variable microwave chopping...

10.1021/acsnano.0c05454 article EN ACS Nano 2020-09-16

Magnetic doping in halide perovskite semiconductors is of timely interest the pursuit new optical and magnetic properties that surpass those existing undoped materials. Here, we report a thorough investigation magneto-optical Ni2+-doped cesium lead with chemical formula CsPb(Br1–xClx)3, implementing steady-state transient photoluminescence (PL), polarized magneto-PL, optically detected resonance (ODMR) spectroscopies. The magneto-PL measurements revealed three PL features different degrees...

10.1021/acs.chemmater.1c03822 article EN Chemistry of Materials 2022-02-02

The incorporation of magnetic impurities into semiconductor nanocrystals with size confinement promotes enhanced spin exchange interaction between photogenerated carriers and the guest spins. This stimulates new magneto-optical properties significant advantages for emerging spin-based technologies. Here we observe elaborate on carrier–guest interactions in magnetically doped colloidal nanoplatelets chemical formula CdSe/Cd1–xMnxS, explored by optically detected resonance...

10.1021/acs.jpclett.9b01999 article EN The Journal of Physical Chemistry Letters 2019-07-17

The polarized emission of colloidal quantum dots from II–VI and perovskite semiconductors were investigated thoroughly, revealing information about the optical transitions in these materials their potential use various opto-electronic or spintronic applications. studies included recording micro-photoluminescence individual nanostructures at cryogenic temperatures, with without influence an external magnetic field. experimental conditions enabled detection circular and/or linear to elucidate...

10.1088/1361-6455/aa8dd4 article EN Journal of Physics B Atomic Molecular and Optical Physics 2017-09-20

Incorporating magnetic ions into semiconductor nanocrystals has emerged as a prominent research field for manipulating spin-related properties. The within the host experience spin-exchange interactions with photogenerated carriers and are often involved in recombination routes, stimulating special magneto-optical effects. current account presents comparative study, emphasizing impact of engineering nanostructures selecting shaping carrier-magnetic ion interactions. Various materials,...

10.1063/5.0160787 article EN The Journal of Chemical Physics 2023-08-15

10.29363/nanoge.fallmeeting.2018.180 article EN Proceedings of the nanoGe Fall Meeting19 2018-07-06
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