Observation of nonlinear absorption and visible photoluminescence emission in chemically synthesized Cu2+ doped ZnS nanoparticles

Kole, A. K.; Kumbhakar, Pathik; Chatterjee, U.

doi:10.1063/1.3674307

Cited by 36 publications

(11 citation statements)

References 19 publications

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“…These practical facts suggest that CIGS thin film solar cells consisting of a CBD-ZnS buffer layer can achieve an efficiency beyond 20% [5]. ZnS is also an important II-VI compound semiconductor because of its higher transmission, high refractive index, and linear and nonlinear absorption, indicating that it finds wide applications in optoelectronic fields as deep-blue light emitting devices or a base material for phosphors [13][14][15].…”

Section: Introductionmentioning

confidence: 98%

Preparation and characteristics of chemical bath deposited ZnS thin films: Effects of different complexing agents

Shin

Agawane

Gang

et al. 2012

Journal of Alloys and Compounds

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Section: Introductionmentioning

confidence: 98%

Preparation and characteristics of chemical bath deposited ZnS thin films: Effects of different complexing agents

Shin

Agawane

Gang

et al. 2012

Journal of Alloys and Compounds

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“…The appearance of sharp absorption maximum in Fig. 4 shows the monodisperse nature of nanoparticles [29]. With increasing concentration of NaCMC, the position of the absorption maximum remains almost same.…”

Section: Uv-vis Spectroscopymentioning

confidence: 81%

Spectroscopic investigation of green synthesized ZnS nanoparticles encapsulated by sodium carboxy methyl cellulose

Devi

Rao

Ramananda³

2020

Appl. Phys. A

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In this article, the capping action of Sodium carboxymethyl cellulose (NaCMC) on ZnS nanoparticles synthesized by microwave-assisted method is reported. The X-ray diffraction and electron diffraction studies corroborated nanocrystalline nature of cubic ZnS. Discontinuous cluster growth of particles was implied by optical absorption studies. This was reflected in transmission electron microscope images. Fourier-transform infrared studies confirmed NaCMC capping on the surface of ZnS nanoparticles. Effective encapsulation of ZnS nanoparticles by NaCMC was further supported by Raman scattering, thermal studies and photoluminescence studies. Surface modification of ZnS nanoparticles with NaCMC appear to be suitable for specific biomedical applications due to the nontoxicity of ZnS and NaCMC.

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“…The ZnS, one of the II-VI semiconductor materials, is a wide band gap material with large exciton binding energy (38 meV) [15,16]. Due to its excellent luminescent properties, it could be a promising material for optoelectronic devices such as flat panel display, ultraviolet light emitting diodes, sensors and injection lasers, etc [17][18][19][20]. Experimentally, the magnetic and optical properties of Mn-doped ZnS are extensively studied.…”

Section: Introductionmentioning

confidence: 99%

Ab initio study of optoelectronic and magnetic properties of Mn-doped ZnS with and without vacancy defects

Khan¹,

Shi²,

Ullah³

et al. 2019

J. Phys.: Condens. Matter

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The effect of vacancy defects on optoelectronic and magnetic properties of Mn-doped ZnS have been systematically investigated using first principle approaches. A single Mn substitution at Zn site induces a spin-polarized ground state in pure ZnS with total magnetization 5 . Our results for magnetic coupling show that the coupling between Mn spins in pure Mn doped ZnS is antiferromagnetic under the super-exchange mechanism. The existence of native defects has a great influence on the magnetic ground state of Mn-doped ZnS. In particular, a p -type defect such as Zn vacancy play a crucial role in stabilizing ferromagnetic ground state while n-type defect, such as S vacancy, has no effect on the magnetic ground state i.e. the interaction between two Mn spins with S-vacancy remain antiferromagnetic. Furthermore, optical properties such as dielectric functions, absorption coeffiecients, reflectivity and transmissitivity for Mn doped systems with and without vacancy defect were also studied, and we found that an absorption peak was obtained in the infrared region which is attributed to the defect states introduced by Zn vacancy in the system. In a S-vacancy defect system, the peaks in the near infrared and visible region are due to donor states introduced by S vacancy defect and these peaks are produced by electrons flipping from a spin up state to a spin down state. Finally, we also correlated the magnetic interactions with the d–d optical transition in pure Mn-doped ZnS and found that the d–d transitions during optical absorptions are red shifted and blue shifted in FM and AFM coupled Mn ions pair, which is in good agreement with the experimental observations. This study may help to understand the behavior of optical and magnetic properties of DMS under vacancy defects.

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Observation of nonlinear absorption and visible photoluminescence emission in chemically synthesized Cu2+ doped ZnS nanoparticles

Cited by 36 publications

References 19 publications

Preparation and characteristics of chemical bath deposited ZnS thin films: Effects of different complexing agents

Preparation and characteristics of chemical bath deposited ZnS thin films: Effects of different complexing agents

Spectroscopic investigation of green synthesized ZnS nanoparticles encapsulated by sodium carboxy methyl cellulose

Ab initio study of optoelectronic and magnetic properties of Mn-doped ZnS with and without vacancy defects

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