Optical characterization of Er-doped ZnSe for scintillation applications

Nasieka, Iu.; Boyko, M.; Strelchuk, V. V.; Kovalenko, Nazar O.; Gerasimenko, A. S.; Starzhinskiy, N.; Zhukov, A. V.; Zenya, I.; Софронов, Д. С.

doi:10.1016/j.optmat.2014.10.052

Cited by 15 publications

(3 citation statements)

References 26 publications

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“…Besides characterization of the excitonic absorption, PL, and quantum yields of the ZnSe cores, we also investigated their RL properties. Typically, ZnSe single crystals, powders, and films are used for radiation detection, − but to our knowledge, the RL properties of ZnSe nanocrystals have not been reported previously. For RL measurements, ZnSe cores prepared with 40 min preheating and 2 min reaction time were selected due to the optimal spectral properties.…”

Section: Resultsmentioning

confidence: 97%

Mechanistic Insights and Controlled Synthesis of Radioluminescent ZnSe Quantum Dots Using a Microfluidic Reactor

Guidelli

Lignos²,

Yoo³

et al. 2018

Chem. Mater.

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We describe the controlled colloidal synthesis and characterization of ZnSe quantum dots using a continuous-flow microfluidic reactor. A systematic investigation of the synthetic route reveals a possible two-stage pathway for ZnSe nanocrystal formation. The first stage corresponds to the formation of zinc selenide nuclei at low temperatures (160 °C), followed by the growth of ZnSe nanocrystals at higher temperatures (340 °C). The quantum dots exhibit sharp exciton absorption, with tunable emission spectra between 370 and 430 nm. The photoluminescence of ZnSe nanocrystals is characterized by narrow emission linewidths of 14–21 nm. For the first time, we report luminescent emission from ZnSe nanocrystals upon X-ray excitation, revealing that radioluminescence emission is associated to confined excitons, and that the radioluminescence intensity is a linear function of the fluence/dose rate of X-rays. The precise control of the synthesis of particles with uniform sizes and excellent optical properties associated with the microfluidic synthesis opens a new avenue for the controlled production of heavy-metal-free luminescent and radioluminescent nanocrystals in flow.

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Section: Resultsmentioning

confidence: 97%

Mechanistic Insights and Controlled Synthesis of Radioluminescent ZnSe Quantum Dots Using a Microfluidic Reactor

Guidelli

Lignos²,

Yoo³

et al. 2018

Chem. Mater.

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“…Arya et al [14] in their work, fabricated ZnSe nanowire via template-assisted electro deposition method. Nasieka et al [15] studied the doping effect of Er on ZnSe and studied structural properties and found that varying the dopant concentration led to disorder in initial structure. Eitan et al [16] have performed the guided growth of horizontal zinc selenide nanowires in controlled manner.…”

Section: Introductionmentioning

confidence: 99%

Stability and electronic properties of ZnSe nanowires: An ab initio approach

Kaushik¹,

Singh²,

Thakur³

2020

Nanosystems: Phys. Chem. Math.

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The presented work revolves around exploration of the structural dependence of electronic properties of zinc selenide nanowire. For this purpose the shapes under consideration are 2 atom linear wire, 2 atom zigzag wire, 4 atom square wire and 6 atom hexagonal wire for zinc selenide. ABINIT code has been used for the study. The band structure, geometrical optimization and stability of proposed structures have been studied. A 4 atom square nanowire structure has come out to be comparatively more stable than other proposed structures while the findings of the study for band structure reveals that zinc selenide nanowires may have conducting, semi conducting or insulating nature which depends on the proposed geometry of the nanowire.

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“…Zinc selenide (ZnSe) is an important and promising, direct band gap compound semiconducting material for applications to the various optical and electronic devices [1][2][3][4][5], such as blue-green laser diodes (LDs), white light emitting diodes (LEDs), optically controlled switches, tunable mid-IR laser sources for remote sensing applications, photovoltaic and photo electro-chemical devices. ZnSe is also used as a window in solar cells together with some narrowband gap semiconductor [6,7].…”

Section: Introductionmentioning

confidence: 99%

Optical properties of zinc selenide slabs at 373 and 423 K in the wavelength 2–15 μm

Zhang

Jiang

et al. 2016

Optik

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Zinc selenide (ZnSe) is a nonlinear optical crystal and infrared optical material, and its window exhibits unique optical properties in the various optical and electronic devices applications. Transmittance spectrum of ZnSe slabs in the infrared wavelength 2-15 μm at normal incidence were investigated by a Bruker V70 FTIR spectrometer. The optical constants of ZnSe at 373 and 423K were achieved by modeling the transmittance spectrum of ZnSe slab. Then the optical properties of single and double slabs were obtained, including transmittance, reflectance and absorptance. The results show that the shapes of transmittance, reflectance and absorptance spectrum of ZnSe slabs at 373 and 423K are similar, and single and double ZnSe slabs all have a wide transparent region. With the temperature increasing, the extinction coefficient of ZnSe decreases, but the refractive index of ZnSe increases. The thicker the thickness of ZnSe slab, the weaker the transmittance and reflectance of ZnSe slab, and the stronger the absorptance of ZnSe slab.

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Optical characterization of Er-doped ZnSe for scintillation applications

Cited by 15 publications

References 26 publications

Mechanistic Insights and Controlled Synthesis of Radioluminescent ZnSe Quantum Dots Using a Microfluidic Reactor

Mechanistic Insights and Controlled Synthesis of Radioluminescent ZnSe Quantum Dots Using a Microfluidic Reactor

Stability and electronic properties of ZnSe nanowires: An ab initio approach

Optical properties of zinc selenide slabs at 373 and 423 K in the wavelength 2–15 μm

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