Study of effects of Mn2+ in CdS nanocrystals

Tripathi, Balram; Singh, Fouran; Avasthi, D. K.; Das, Diptasikha; Vijay, Y.K.

doi:10.1016/j.physb.2007.06.022

Cited by 27 publications

(20 citation statements)

References 26 publications

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“…If the tetrahedral crystal field is distorted, or if there are sites with octahedral symmetry, the crystal field is stronger and thus the states within the 3d shell are significantly affected. Manganese ions in these lattice sites show different crystal field splittings of the 3d-orbital states, and therefore the emission bands are red-shifted [23,25,27], which agrees with our observations.…”

Section: Resultssupporting

confidence: 91%

Synthesis route and optical characterization of CdS:Mn/polyvinyl alcohol nanocomposite

Fediv¹

2012

Semicond. Phys. Quantum Electron. Optoelectron.

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Abstract. CdS nanoparticles doped with Mn have been synthesized in aqueous solution by using polyvinyl alcohol (PVA) as a capping reagent. Influence of the polymer concentration on the size and concentration of the nanoparticles was studied using transmission electron microscopy and optical absorption. Incorporation of Mn 2+ ions into CdS nanoparticles was confirmed by photoluminescence (PL) intensity increase and band shift with Mn concentration. The PL studies proved that localization of Mn ions (inside the nanoparticles or on the surface) depends on the sequence of synthesis steps. The bleaching of the low-energy PL band of the low-doped CdS:Mn nanoparticles by surface modification with a Cd(OH) 2 layer proves suppression of the emission related to surface states.

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Section: Resultssupporting

confidence: 91%

Synthesis route and optical characterization of CdS:Mn/polyvinyl alcohol nanocomposite

Fediv¹

2012

Semicond. Phys. Quantum Electron. Optoelectron.

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“…A scanning rate of 4 • /min was applied to record the patterns in the 2Â range between 20 • and 75 • . Transmission electron microscopy (TEM) and (Table 1) [30,31]. Changes in the lattice constants from 4.142 to 4.138 and 4.112 Å for the a-axis and from 6.724 to 6.718 and 6.693 Å for the c-axis are observed with the increase in Mn composition (x) from 0 to 0.03 and 0.05.…”

Section: Characterizationmentioning

confidence: 99%

Influence of Mn doping on the microstructure and optical properties of CdS

Wang

Fang

2009

Journal of Alloys and Compounds

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“…This also occurs in the QDs [26]. However, since the change in energy gap of bulk-like NCs can be disregarded, these virtual levels become shallower for the conduction band (CB).…”

Section: Carrier Dynamicsmentioning

confidence: 99%